In this study, the effect of mesopores in the Marimo nanocarbon (MNC) anode material on the power generation performance of a direct glucose fuel cell was investigated. Three types of MNC with different mesopore distributions were used for the catalyst support material; Pt was used as the loaded metal. In the glucose fuel cell performance test, MNC containing many pores of approximately 35 nm showed the highest maximum output density of 0.72 mW cm −2 at 5 wt% metal loading and 0.3 M Glucose aqueous solution. The pores of approximately 30 nm may promote ion diffusion and rapid mass transport of reactants and products. These results indicated that MNC was an effective anode material for the direct glucose fuel cell.

DOI： 10.1016/j.cartre.2021.100058

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We prepared and investigated composites of spinel Li4Ti5O12(LTO) and Marimocarbon (MC) by the hydrothermal method could form uniform electric paths without aggregation of LTO particles for high capacity and high rate lithium-ion batteries.MC consisted of many fine carbon nanofilaments (CNFs) intertwined with each other in a complicated fashion. There are vacant space volumes of hundred nanometers between CNFs. LTO particles were deposited in the space volumes among the tangled CNFs of MC.LTO is one of the most attractive anode materials for lithium-ion batteries because of its structural stability and safety.The morphology, microstructure and elemental composition of LTO/MC composites were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD).A Charge-discharge test revealed that LTO/MC composite (MC 10 wt%, prepared using a fluidized bed flow-reactor) gave the specific capacity of 170 mA g−1at 1C (1C = 175 mA g−1).The LTO/MC composite maintained the specific capacity of 47 mAh g−1even in the high rate zone at 30C whereas pristine LTO of it were only 15 mAh g−1at this rate.The unique structure of the LTO/MC composites can contribute to improve electrochemical performance of LTO anode.The LTO/MC composites can provide an effective approach to improve lithium-ion battery performances.

DOI： 10.1007/s10853-021-06319-w

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DOI： 10.7209/tanso.2021.65

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DOI： 10.7209/tanso.2021.70

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In this study, a fibrous carbon material, Marimo nano carbon (MNC), was investigated as a catalyst support material for a direct methanol fuel cell. MNC comprises diamond particles in its core and carbon nanofilaments that radiate outward from the diamond core. The MNC-supported Pt catalyst (Pt/MNC) exhibited better performance than the conventional catalyst support material (i.e., carbon black). Higher Pt dispersion was observed on MNC compared to carbon black, with decreased Pt loading. Pt/MNC exhibited high electrochemical activity.

DOI： 10.1007/s10562-018-2588-9/s10562-018-2588-9

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DOI： 10.1149/2.0361809jes

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：IOP PUBLISHING LTD  

Sea urchin-shaped hybrid copper powder (HCuP), which is characterized by copper alloy powder particles covered with vertically aligned Co-catalyzed carbon nanofibers (CNFs), was successfully synthesized to improve the oxidation resistance of copper paste. Fine spherical CuCo alloy particles with nominal composition of Cu/Co = 99/1w/w were fabricated by atomization. Cobalt nanoprecipitates (CoNPs) used as the catalyst for carbon fiber growth were arranged on the surface of an alloy particle by heat treatment. CNFs were grown from the CoNPs on the alloy particle via thermal chemical vapor deposition (CVD). The conductive paste was prepared by milling using HCuP with resin and oleic acid. HCuP paste was screen-printed on a glass or plastic substrate and showed a resistivity as low as 1.2 x 10(-4) Omega.cm after curing at 150 degrees C for 30 min in air (21% oxygen). These results indicate that the use of HCuP is a promising technology for printable electronics in a sustainable society. (C) 2017 The Japan Society of Applied Physics

DOI： 10.7567/JJAP.56.07KD03

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記述言語：日本語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1252/kakoronbunshu.43.45

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記述言語：日本語   出版者・発行元：炭素材料学会  

We discuss the control of functional groups on an activated carbon surface using electrochemical oxidation. As a result, this method could introduce surface functional groups into activated carbon without a major change of the pore structure. Carboxyl groups were introduced under strong oxidation conditions and lactone was formed under mild oxidation condition. This electrochemical oxidation method could control the functional groups generated on an activated carbon surface.

DOI： 10.7209/tanso.2016.96

CiNii Books

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記述言語：英語   出版者・発行元：一般社団法人 日本MRS  

Marimo carbon is a fibrous carbon material that has attracted attention in many fields, such as for its use in electronic devices and capacitors. It has diamond particles in its core, with carbon nanofilaments radiating outward from diamond core. In this study, we synthesized marimo carbon using an oxidized diamond-supported catalyst by fluidized bed chemical vapor deposition (CVD) and rotary fluidized bed CVD. This demonstrated that fluidized bed technology can be used for the cost-efficient, large-scale production of uniform marimo carbon.

DOI： 10.14723/tmrsj.41.59

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記述言語：英語   出版者・発行元：一般社団法人 日本MRS  

Carbon nanotubes (CNTs) and carbon nanofilaments (CNFs) have attracted considerable interest in industry and many other fields such as for their use in electronic devices. In this study, CNFs were synthesized by decomposition of ethylene over Pd- and Ni-loaded oxidized diamond catalysts using a fluidized- bed reactor. We examined the effects of various internal structures on Li-ion battery anode properties. Electrochemical measurements indicated that CNF anodes displayed near the theoretical discharge capacity of graphite intercalation compounds (372 mAh/g) as well as high cycle retention. CNF anodes were thus found to be appropriate materials for the use in Li-ion batteries.

DOI： 10.14723/tmrsj.41.81

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記述言語：日本語   出版者・発行元：THE CARBON SOCIETY OF JAPAN  

Carbon nanotubes (CNTs) and nanofilaments (CNFs) were synthesized by the decomposition of ethylene using oxidized diamond-supported catalysts at a relatively mild temperature. Oxidized diamond is proposed as a novel support material for the catalytic synthesis of CNTs and CNFs. We focused on the inner structure of the CNTs which were synthesized using Ni, Co, Fe, Ni-Fe, Co-Fe, and Ni-Co-loaded oxidized diamond catalysts. The oxidation state of loaded metals in bimetallic catalysts played an important role in producing a more uniform internal structure of the synthesized CNTs. CNFs synthesized over bimetal-loaded oxidized diamond catalysts had different internal structures and fiber axis/graphene layer angles.

DOI： 10.7209/tanso.2015.2

CiNii Books

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その他リンク： https://jlc.jst.go.jp/DN/JLC/20005126536?from=CiNii

記述言語：日本語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1252/kakoronbunshu.40.261

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：ELECTROCHEMICAL SOC INC  

In this study, we synthesized carbon nanofilament on decomposition of ethylene from it was using oxidized diamond-supported for Ni catalyst. Precious supported metals were used for synthesis of carbon nanofilaments and preparation of electrocatalyst by using methanol oxidation reaction. The electrocatalytic activity of Pt-loaded catalysts were examined by Cyclic voltammetry (CV) measurement. The result of CV measurement of Pt-loaded synthesized Carbon nanofilament (CNF) showed a higher catalytic activity than carbon black (Vulcan (R) XC-72) and multi wall carbon nanotube (MWCNT).

DOI： 10.1149/05048.0055ecst

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

Carbon nanotube and filament could be obtained by the decomposition of C2H4 using oxidized diamond-supported metal catalysts with three distinct structural types. Oxidized diamond is proposed as a novel catalytic means for the synthesis of nanocarbons. Oxidized diamond may catalyze unique reactions of importance in carbon nanotube and filament synthesis.

DOI： 10.1149/05020.0001ecst

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

Carbon nanotube was synthesized by decomposition of ethylene over oxidized diamond-supported catalysts at a relatively mild temperature. We focused on the effect of Fe, Ni, Co, and Ni-Fe, Co-Fe, and Ni-Fe-loaded oxidized diamond catalysts on the growth and inner structure of the carbon nanotubes. From the result of Raman spectrum, it can be seen that synthesized carbon nanotube over bimetal oxidized diamond catalysts had a high G/D ratio. Synthesized carbon nanotubes had a clear hollow structure. © The Electrochemical Society.

DOI： 10.1149/05048.0009ecst

Scopus

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）  

Carbon nanotube was synthesized by decomposition of ethylene over oxidized diamond-supported catalysts at a relatively mild temperature. We focused on the effect of Fe, Ni, Co, and Ni-Fe, Co-Fe, and Ni-Fe-loaded oxidized diamond catalysts on the growth and inner structure of the carbon nanotubes. From the result of Raman spectrum, it can be seen that synthesized carbon nanotube over bimetal oxidized diamond catalysts had a high G/D ratio. Synthesized carbon nanotubes had a clear hollow structure. © The Electrochemical Society.

DOI： 10.1149/05048.0009ecst

Scopus

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It is shown how to remove nitrate ions from aqueous solution by electrosorption in a way that has a low environmental impact and is energy saving. In order to elucidate adsorption/desorption mechanism of nitrate ions, ion removal using flow through capacitor and cyclic voltammetry measurements were investigated. Characterization of suitable electrodes for electroadsorption was determined. The static attraction by surface charges of carbon electrodes had a profound effect on adsorption of nitrate ions. It is difficult for nitrate ion to desorb from the electrode, therefore an electrode with pHPZC (point zero of charge) of a weak acid is appropriate. Due to the overlapping effect of diffusion layers in pores, it is thought that large mesopores (>20 nm) and the voids between particles are effective in dilute solution for nitrate ion removal.

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記述言語：日本語   出版者・発行元：THE CARBON SOCIETY OF JAPAN  

The physicochemical properties of carbon materials are strongly influenced by the presence of chemical species on the surface. In this study, surface functional groups on cup-stacked-type carbon nanotubes (CSCNTs) were introduced by gas phase, liquid phase, and electrochemical oxidations. Several techniques were used to characterize these materials including nitrogen adsorption, chemical and thermal analyses, FT-IR, XPS, SEM, TEM, and Raman. The results indicated that the amount of surface functional groups on CSCNTs was strongly affected by the oxidation method. In particular, the electrochemical oxidation of CSCNTs was effective and increased the concentration of carboxylic acid.

DOI： 10.7209/tanso.2010.55

CiNii Books

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その他リンク： https://jlc.jst.go.jp/DN/JALC/00356615125?from=CiNii

記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：ELECTROCHEMICAL SOC INC  

Nanocarbons could be obtained by the decomposition of light alkanes using oxidized diamond-supported Ni catalyst with high yields. This is the report to show that oxidized diamond can serve as an active catalytic support material for nanocarbon synthesis. Oxidized diamond is proposed as a novel catalytic means for the synthesis of nanocarbons, and it is suggested that oxidized diamond may catalyze unique reactions of importance in nanomaterial synthesis.

DOI： 10.1149/1.3503350

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：ELECTROCHEMICAL SOC INC  

A mesoporous carbon material, Resorcinol-Formaldehyde Carbon Cryogel (RFCC), was used as an electrode of water treatment technologies applied principle of electric double layer (EDL). And the electrode performance of RFCC was compared with that of microporous materials, such as MSC10 and ACo. The efficiency of ion removal of RFCC was the highest of the three electrodes and carbon electrodes with a large mesopore (> 20nm) was formed an ideal EDL in the dilute solution.

DOI： 10.1149/1.3496022

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：SPRINGER  

We developed a novel spherical carbon material. The spherical carbon is composed of a high density of carbon nanotubes or nanofilaments, and includes an oxidized diamond particle as a core. Syntheses of this carbon in high volume with high selectivity may be possible. It is expected that this carbon will be useful as a catalyst material for fuel cells, electric double-layer capacitors, etc.

DOI： 10.1007/s10853-008-3081-4

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：AMER CHEMICAL SOC  

We examined synthesis gas (H(2) and CO) production from CO(2) reforming of methane using a Co/oxidized diamond catalyst to investigate the properties of oxidized diamond as a support material and as a way to avoid carbon deposition on cobalt-loaded catalysts. Oxidized diamond showed a good catalytic performance among various support materials. No carbon deposition was observed when using the Co/oxidized diamond catalyst in CO(2) reforming of CH(4). In addition, CH(4) conversion was maintained for 10 h during CO(2) reforming of CH(4) over the Co/oxidized diamond catalyst. In the CO(2) reforming of CH(4), active cobalt species might be formed or deposited carbon would be rapidly eliminated on oxidized diamond-supported catalyst.

DOI： 10.1021/ef800265x

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：INST PURE APPLIED PHYSICS  

We have characterized the field electron emission from well-aligned carbon nanotubes (CNTs) synthesized in methanol using cobalt (Co) as a catalyst on silicon (Si) substrates. In order to prepare CNTs aligned vertically to the substrate, the physicochemical state of the Co catalyst was controlled by annealing in air at a temperature of 900 degrees C as a thermal preoxidation prior to the liquid-phase growth. For the CNT growth, the Co-loaded Si substrate was heated by applying a direct current through the substrate in methanol. Vertically well-aligned CNTs of different crystallinities were synthesized at temperatures of 600 and 900 degrees C. Field electron emission characteristics of the synthesized well-aligned CNTs were measured using diode-type electrodes in a high-vacuum chamber. A low-threshold electric field of approximately 0.9 V.mu m(-1) and a very stable emission were observed in the CNTs with high crystallinity grown at a temperature of 900 degrees C.

DOI： 10.1143/JJAP.46.6339

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：JAPAN SOC APPLIED PHYSICS  

We have recently developed a novel catalytic method for synthesizing a wide variety of carbon nanomaterials in the organic liquid. The method enabled us to realize a simple, rapid, and high-purity growth of carbon nanotubes (CNTs) in alcohol liquids. In this study, cobalt (Co) was used as a catalyst metal. In order to control the structure of carbon nanomaterials, we investigated the relationship between the growth conditions and the grown materials. Scanning electron microscopy (SEM) observation revealed that the morphology of the grown carbon nanomaterials strongly depended on the reaction temperature. Under the reaction temperature in the range from 873 to 973 K, fibriform deposits were mainly obtained. Transmission electron microscopy (TEM) revealed that the fibriform deposits were CNTs. The amount of the supported Co catalyst affected the fine tubular structure of the CNTs. We found that the existence of the reaction temperature of 873 K during the reaction time was essential for growing a fibriform structure in this study. The longer duration time for the reaction temperature of 1127 K resulted in a higher crystal quality for CNTs. We a] so demonstrated that the Co catalyst thermal oxidation at 1173 K resulted in the growth of aligned CNTs with the higher density.

DOI： 10.1143/JJAP.46.6329

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：IOP PUBLISHING LTD  

We have investigated the surface potential change accompanying the variation in diamond surface chemisorbed structures using scanning Maxwell-stress microscopy. The hydrogen chemisorbed diamond surface was prepared by a hydrogen plasma treatment following the homoepitaxial (001) diamond growth by the microwave plasma-assisted chemical vapor deposition (MPCVD). The surface chemisorbed structure was controlled by increasing the oxidized temperature in the range from 100 degrees C to 500 degrees C. The hydrogen chemisorbed diamond surface showed a minimum work function value of 4.8 eV. A thermal oxidation of the hydrogen chemisorbed diamond surface at 500 degrees C yielded the oxygen chemisorbed diamond surface, which showed a maximum work function value of 5.8 eV. The surface potential value, which corresponds to the surface work function value, was strongly influenced by the species of the chemisorption on the diamond surface.

DOI： 10.1088/1742-6596/61/1/066

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記述言語：英語   掲載種別：研究論文（国際会議プロシーディングス）   出版者・発行元：IOP PUBLISHING LTD  

We have investigated the electrical conductivity change that occurs by oxidation of a homoepitaxially grown diamond (100) surface. For this purpose, atomically flat diamond (100) surfaces homoepitaxially grown by a microwave plasma-assisted chemical vapor deposition (MPCVD) were prepared. It is well-known that a CVD-grown diamond surface is a hydrogen-chemisorbed structure. Surface chemisorbed structures of diamond can be controlled by oxidation in air at temperatures from 25 degrees C up to 350 degrees C. The degree of oxygen-chemisorption on the diamond surfaces was analyzed by X-ray photoelectron spectroscopy (XPS). The electrical resistivity (or conductivity) of the diamond surfaces was measured at room temperature under nitrogen flow by using the van der Pauw four-probe system. The surface resistivity of diamond was drastically increased at 300-350 degrees C, a temperature range corresponding to the beginning point of surface oxidation of a diamond analyzed by the XPS.

DOI： 10.1088/1742-6596/61/1/067

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：AMER CHEMICAL SOC  

Carbon nanotubes have been grown on both sides of a nickel-chromium substrate in methanol using radiofrequency induction heating. Hollow multiwalled carbon nanotubes were obtained that stood uniformly on both sides of the nickel-chromium substrate without added catalyst. The mechanism of nanotube growth is a catalytic process that takes place at the substrate surface under thermal nonequilibrium.

DOI： 10.1021/cg060207p

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：IOP PUBLISHING LTD  

We show a structural modification technique which causes the fluctuated surface of multi-wall carbon nanotubes ( MWNTs) by using hydrogen sulfide as a reaction-assist medium, which promotes the formation of sp(3)-hybridized orbitals of carbon and suppresses the formation of sp(2)-hybridized orbitals in the plasma process. We observed the structure of MWNTs synthesized with the addition of H2S by means of high-resolution transmission electron microscopy and electron energy loss spectroscopy, and found the cornhusk-like surface fluctuations on the surface of MWNTs. In this study, we discuss the mechanism underlying this structural modification of carbon nanotubes precisely.

DOI： 10.1088/0022-3727/39/15/017

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記述言語：英語   出版者・発行元：THE CARBON SOCIETY OF JAPAN  

Graphitized carbon nanofibers are prepared from 2-propanol at 673 K by spray pyrolysis in which dc high voltage is applied to the spray nozzle. A mixture of helical and straight carbon nanofibers is observed, and their diameters are ca. 100 -300nm. The resultant carbon nanofibers after acid-and heat-treatment show large capacity of around 310 mAh g<SUP>-1</SUP> and high reversibility with little hysteresis after the 2nd cycle in insertion/extraction reactions of lithium-ion, while a large irreversible capacity of 365 mAh g<SUP>-1</SUP> is observed at potentials below 0.9 V in the 1st cycle.

DOI： 10.7209/tanso.2006.329

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記述言語：日本語   出版者・発行元：日本表面科学会  

DOI： 10.1380/jsssj.26.547

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：JAPAN PETROLEUM INST  

Characterization of nickel and cobalt catalysts supported on oxidized diamond (O-dia) in the partial oxidation of methane to synthesis gas was carried out by X-ray photoelectron spectroscopy (XPS) and the transient response pulse technique. Carbon deposition occurred on nickel/O-dia, but not on cobalt/O-dia catalyst at 873 K throughout prolonged reaction. XPS analyses observed partially reduced nickel oxides on nickel/O-dia catalyst after reaction with methane/oxygen (5/1) at 873 K. Co(0), partially reduced cobalt oxide, and Co(M) oxide phases were found on cobalt/O-dia catalyst after reaction at 873 K. Transient response methane/oxygen (2/1) pulse studies found a large amount of hydrogen production occurred immediately at 873 K over the nickel/O-dia catalyst. However, a very small amount of hydrogen production was seen over the cobalt/O-dia catalyst, indicating that nickel and cobalt species supported on O-dia exhibited different behavior. Transient response of the catalyst bed temperature found that endothermic reaction occurred on the nickel/O-dia catalyst at 873 K, but exothermic reaction proceeded on the cobalt/O-dia catalyst. These results suggest that methane decomposition to hydrogen is the primary reaction path over nickel/O-dia catalyst, whereas complete oxidation is the primary reaction followed by steam and carbon dioxide reforming to produce synthesis gas over the cobalt/O-dia catalyst.

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：SPRINGER  

Carbon nanofilaments were grown on silicon substrates by using a novel catalytic method in an organic liquid hydrocarbon. Nonequilibrium catalytic deposition gave significantly pure carbon nanofilaments with very little soot within a few minutes in n-octane. Scanning electron microscope images indicate that the nanofilaments are grown perpendicular to the Si substrate surface. This very rapid and dense production of carbon nanofilaments can be attributed to the great difference of chemical potential between the substrate surface and reactant liquid.

DOI： 10.1007/s10562-005-4890-6

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：PERGAMON-ELSEVIER SCIENCE LTD  

Oxidized diamond-supported Ni catalyst produced a high yield of hydrogen by the decomposition of methane at 823 K. The oxidized diamond-supported Pd catalyst also showed the possibility of use as a high-yield hydrogen production catalyst. Oxidized diamond is proposed as an effective catalyst support material for decomposition of methane. (C) 2004 International Association for Hydrogen Energy. Published by Elsevier Ltd. All rights reserved.

DOI： 10.1016/j.ijhydene.2004.03.038

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：ELSEVIER SCIENCE INC  

Graphitized carbon nanofibers are prepared from 2-propanol at 673 K by spray pyrolysis in which dc high voltage is applied to the spray nozzle. A mixture of helical and straight carbon nanofibers is observed, and their diameters are ca. 100-300 nm. The resultant carbon nanofibers show large capacity of around 340 mAh g(-1) and high reversibility with little hysteresis after the 2nd cycle in insertion/extraction reactions of lithium-ion, while a large irreversible capacity of 400 mAh g(-1) is observed at potentials below 0.9 V in the 1st cycle. (C) 2004 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.elecom.2004.10.009

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：ELSEVIER SCIENCE BV  

Oxidized diamond (O-dia) acted as an excellent support material for the partial oxidation of methane to synthesis gas. The O-dia gave the best performance among the support materials of Ni- and Co-loaded catalysts for the partial oxidation of methane at a low temperature. A nickel (3 wt.%)/O-dia catalyst afforded a high CH4 conversion of 26.5% at a CH4 to O-2 ratio of 5 to give nearly a 1 to 2 ratio of CO and H-2 with selectivities of 70% at 873 K. Cobalt (3 wt.%)/O-dia catalyst exhibited a slightly lower catalytic activity than that of Ni (3 wt.%)/O-dia catalyst, where CH4 conversion was 23.0%. No change in the support was observed in the oxidation atmosphere at a high temperature. Carbon deposition of the catalyst surface in the reaction of CH4 was examined by thermogravimetric analyses. Carbon deposition occurred on the nickel (3 wt.%)/O-dia catalyst at below 923 K, and above this temperature no carbon deposition was seen. However, on the cobalt-loaded catalyst no carbon deposition was observed at any reaction temperature. (C) 2004 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.apcata.2003.12.029

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：ELSEVIER SCIENCE BV  

The possibility of CO2 as an alternative oxidant for the direct conversion of CH4 to formaldehyde was investigated. The activity of the catalyst was measured at an atmospheric pressure and temperatures at which the homogeneous gas-phase reactions were negligible. Among various metal oxides loaded on SiO2 catalysts, only vanadium oxide produced the desired product. V2O5/SiO2 and V2O5/oxidized diamond catalysts, the most effective catalysts for formaldehyde synthesis, afforded about 500 mumol h(-1) g-cat(-1) and 300 mumol h(-1) g-cat(-1) of formaldehyde at 973 K, respectively. When the reaction of CH4 was carried out in Ar atmosphere, both of the V2O5/SiO2 and V2O5/oxidized diamond catalysts lost the catalytic activity as soon as the lattice oxygen of vanadium oxide was consumed. However, the activity recovered by switching the atmosphere from Ar to CO2. These results strongly suggest that CO2 acts as an oxidant for selective oxidation of CH4 to formaldehyde via the lattice oxygen of vanadium oxide. (C) 2003 Elsevier B.V. All rights reserved.

DOI： 10.1016/j.molcata.2003.09.026

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記述言語：日本語   出版者・発行元：日本金属学会  

DOI： 10.2320/materia.43.218

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：AMER CHEMICAL SOC  

We have developed a novel method of producing acetaldehyde directly from ethane using carbon dioxide. The selective oxidation of C2H6 using CO2 as an oxidant was studied over various metal oxide-loaded catalysts. Among metal oxides, vanadium oxide afforded the highest activity toward CH3CHO when it was loaded on the oxidized diamond. With a V2O5 loading level of 3 wt % on oxidized diamond, 140 mumol/h.g of catalyst of CH3CHO was obtained at 923 K with C2H6 and CO2 (1:1 mixed gas) in SV of 18 000 mL/h.g of catalyst. C2H4 and HCHO were obtained as byproducts. In the absence of CO2, no aldehydes were obtained, indicating that oxygen was supplied from CO2 through the vanadium oxide surface.

DOI： 10.1021/jp0354797

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：AMER CHEMICAL SOC  

High yields of hydrogen and carbon nanomaterials can be obtained by the decomposition of methane using oxidized diamond-supported Ni and Pd catalysts at 873 K. This is the first report to show that oxidized diamond can serve as an active support material. The simultaneous synthesis of carbon nanomaterials and hydrogen is especially interesting. Oxidized diamond is proposed as a novel catalytic means for the synthesis of hydrogen and carbon nanomaterials, and it is suggested that oxidized diamond may catalyze unique reactions of importance in nanomaterial synthesis.

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：CHEMICAL SOC JAPAN  

Carbon dioxide is an effective oxidant for the conversion of alkanes to chemical feedstocks. Oxidized diamond is useful as a novel catalytic support material. Oxidized diamond provided catalytic sites for the activation of alkanes under CO2 atmosphere. The present findings also suggest that the surface-properties of oxidized diamond may facilitate unique catalytic reactions, such as alkanes conversion in the presence of CO2.

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：ELSEVIER SCIENCE BV  

Oxidized diamond demonstrated excellent support for the dehydrogenation of light alkanes to alkenes in the presence of CO2. Oxidized diamond-supported Cr2O3 and V2O5 catalysts exhibited comparatively higher catalytic activities in the dehydrogenation of lower alkanes in the presence of CO2. In the dehydrogenation of propane, the oxidized diamond-supported Cr2O3 and V2O5 catalysts in the presence of CO2 afforded nearly twofold higher activities than that in the absence of CO2. The activity of the oxidized diamond-supported V2O5 catalyst in the dehydrogenation of propane increased with increasing reaction temperatures. Furthermore, in the dehydrogenation of n-butane and iso-butane, a promoting effect of CO2 on butane conversion and butenes yields was observed over the oxidized diannond-supported Cr2O3 and V2O5 catalysts, though the promotion effect was small.
UV-Vis analyses of the fresh and the reacted catalysts in the presence and absence of CO2 revealed that CO2 kept the surface V2O5 and Cr2O3 in a state of oxidation slightly higher than that in the absence of CO2. (C) 2003 Elsevier B.V. All rights reserved.

DOI： 10.1016/S0920-5861(03)00268-2

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：AMER CHEMICAL SOC  

We performed partial oxidation, steam reforming, and CO2 reforming of CH4 to Synthesis gas, using oxidized-diamond-supported group VIII metal catalysts, to investigate the properties of oxidized diamond as a support material and to avoid carbon deposition on a metal-loaded catalyst. Nickel (5 wt %)/oxidized diamond afforded the highest CH4 conversion of 24% (CH4/O-2 = 5), giving CO and H-2 at 873 K for the partial oxidation of CH4. No carbon deposition was observed with a supported oxidized-diamond catalyst (5 wt % nickel loading level) in the partial oxidation of CH4 at &gt; 923 K. In the steam reforming of CH4, ruthenium (5 wt %)/oxidized diamond afforded a CH4 conversion of 63% (CH4/H2O = 0.33), giving CO and H-2 at 873 K. Nickel, palladium, ruthenium, and rhodium (5 wt %)/oxidized diamond showed high catalytic activities for CO2 reforming of CH4 (CH4/CO2 = 1) at 873 K.

DOI： 10.1021/ef0300040

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：AMER CHEMICAL SOC  

Oxidized diamond played a significant role as an efficient support for a Cr2O3-loaded catalyst during the dehydrogenation Of C2H6 to C2H4 in the presence of carbon dioxide at 923 K, giving a 22.5% C2H4 yield with a 87.7% C2H4 selectivity. The activity of the oxidized diamond-supported Cr2O3 catalyst in the presence of CO2 was about 3 times higher than that in the absence Of CO2. The activity of the oxidized diamond-supported Cr2O3 catalyst increased with increasing CO2 Partial pressures. XPS analyses of the fresh and the reacted catalysts in the presence and absence Of CO2 revealed that CO2 maintained the surface Cr2O3 at a higher-oxidation state than the reaction in the absence Of CO2. On the other hand, bulk of Cr2O3 was not reduced in either atmosphere.

DOI： 10.1021/jp022173b

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記述言語：日本語   掲載種別：研究論文（学術雑誌）   出版者・発行元：JAPAN PETROLEUM INST  

In order to discuss the possibility of steam reforming of kerosene to produce hydrogen for the on-site fuel cell co-generation system, steam reforming of dodecane, as a model compound of kerosene, was carried out in the presence or absence of oxygen at 773-1073 K using a fixed bed flow reactor. The catalytic performance of Ru, Rh, and Ir-loaded catalysts was compared.
In the steam reforming of dodecane, Rh/La2O3 and Ru/La2O3 afforded higher dodecane conversions and hydrogen yields than those with Ir/La2O3. Dodecane conversion, however, increased with the addition of a small amount of oxygen together with steam over Ir/La2O3 catalyst, and the conversion of dodecane reached those obtained over Rh and Ru/La2O3 catalysts. Basic support La2O3 exhibited the best performance for the steam reforming in the presence of oxygen using Ir catalyst among the supports tested.

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：KLUWER ACADEMIC/PLENUM PUBL  

Ru-loaded Y2O3 catalyst was investigated for the partial oxidation of methane to synthesis gas. Ru(0.5 wt%)/Y2O3 catalyst afforded a high CH4 conversion of 27% at a CH4:O-2 ratio of 5 to give nearly a 1:2 ratio of CO and H-2 with a selectivity of 75% at 873 K. Ru(0.5 wt%)/Y2O3 catalyst maintained high catalytic activity over 10 h in the partial oxidation of methane. Carbon deposition of the catalyst surface in the reaction of CH4 was examined by thermogravimetric analyses, and it was found that no carbon deposition occurred on the Ru(0.5 wt%)/Y2O3 catalyst. The synthesis-gas production proceeded basically via a two-step reaction consisting of methane combustion to give H2O and CO2, followed by the reforming of methane from CO2 and steam.

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：MATERIALS RESEARCH SOCIETY  

A simple and novel method was developed for efficient synthesis of aligned multiwalled carbon nanotubes (CNTs) in methanol and ethanol under normal pressure. The CNTs' alignment and structures were investigated using Raman scattering and x-ray diffraction spectroscopy. A unique kind of coupled CNT was synthesized in which one rotated to the left and one rotated to the right. Chains periodically bridged the coupled CNTs. The growth mechanism of the CNTs within organic liquid is proposed to be a catalytic process at the Fe film surface in a dynamic and thermal nonequilibrium condition in organic liquids.

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：ACADEMIC PRESS INC ELSEVIER SCIENCE  

The dehydrogenation of ethylbenzene over a vanadium oxide-loaded MgO catalyst was investigated using carbon dioxide. The styrene yield in the presence of carbon dioxide was 2.5 times higher than that in the absence of carbon dioxide (argon atmosphere) at 823 K, indicating that carbon dioxide markedly promoted the dehydrogenation of ethylbenzene. At 873 K, the same catalyst afforded the highest styrene yield, 73.8% with a selectivity of 90.1%, in the presence of carbon dioxide. In order to elucidate the role of carbon dioxide in this reaction, characterization of the catalyst was carried out via methods such as temperature-programmed reduction, temperature-programmed reaction with carbon dioxide, and UV-visible, FT-IR, and XRD spectroscopies. Carbon dioxide behaved as an oxidant for the vanadium species, and the surface vanadium species were kept in a high oxidation state with carbon dioxide during the dehydrogenation reaction. Active phases of vanadium in the dehydrogenation reaction were believed to be V5+ species in V2O5 or Mg3V2O8 on highly dispersed MgO. The reduced species, V4+ and V3+, were less reactive sites for the dehydrogenation. (C) 2002 Elsevier Science (USA).

DOI： 10.1006/jcat.2002.3593

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：SPRINGER  

A combinatorial optimization with genetic algorism was performed on the five generations C of 0.05 atm% Fe/SiO2 added multi-metal oxides to be used as catalytic materials for the selective oxidation of propane to give aldehydes at 623-773 K. The loaded multi-metal oxides consist of some elements selected from seven elements with various atomic charges or redox properties, For the best materials, selectivity toward aldehydes from 35% at 1st generation to 45% at 4th generation were achieved at 5% propane conversion. Further rational optimization of the best performance catalyst also improves the selectivity up to 49.5%.

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：KLUWER ACADEMIC/PLENUM PUBL  

Oxidized diamond-supported Ni catalysts gave the best performance among the oxidized diamond-supported various metal catalysts for the decomposition of methanol to synthesis gas. Ni (5 wt%)/oxidized diamond afforded 82.5% conversion of methanol to give a CO to H-2 ratio of 1.7 at 573 K.

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：ELSEVIER SCIENCE BV  

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：ACADEMIC PRESS INC  

The role of CO2 in the dehydrogenation of ethane over Ga2O3-loaded catalysts was examined. Ga2O3/TiO2 catalyst was found to be the most effective for the dehydrogenation of ethane to ethene in the presence of CO2 at 923 K. The activity of the Ga2O3/TiO2 catalyst in the presence Of CO2 increased with increases in the partial pressure of CO2. To maintain high catalytic activity, cofeeding of CO2 and steam was effective in the case of the Ga2O3/TiO2 catalyst. Over the Ga2O3/TiO2 catalyst, the presence of CO2 markedly promoted the dehydrogenation of ethane as compared with the absence of CO2. Using a pulsed reaction technique, the use of CO2 in the dehydrogenation of ethane was found to reduce carbon deposition over the catalyst and to assist in the rapid desorption of the product (ethene) from the catalyst's surface. (C) 2001 Academic Press.

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：CHEMICAL SOC JAPAN  

Oxidized diamond gave the best performance among the support materials of Ni loaded catalysts for the partial oxidation of methane. Ni(5 wt%)/oxidized diamond afforded 20% conversion of methane (CH4/O-2 = 5) to give CO and H-2 ratio of 2.0 at 873 K. Ni(5 wt%)/oxidized diamond also showed high catalytic activity for the CO2 reforming of methane.

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：ELSEVIER SCIENCE BV  

Mechanisms of partial oxidation of methane to synthesis gas were studied using a pulsed reaction technique and temperature jump measurement. Catalyst bed temperatures were directly measured by introducing 1 and 3 ml pulses of a mixture of CH4 and O-2 (2/1). With Ir, Pt and Ni/TiO2 catalysts, a sudden temperature increase at the front edge of the catalyst bed was observed upon introduction of the pulse. The synthesis gas production basically proceeded via two-step paths consisting of highly exothermic complete methane oxidation to give H2O and CO2 followed by the endothermic reforming of methane with H2O and CO2. In contrast, with the Rh and Pd/TiO2 catalysts, the temperature at the front edge of the catalyst bed decreased upon introduction of the CH4/O-2 (2/1) pulse and a small increase in the temperature at the rear end was observed, Initially, the endothermic decomposition of CH4 to H-2 and deposited carbon or CHx probably took place at the front edge of the catalyst bed, after which the deposited carbon or generated CHx species would be oxidized into COx. When the Ru/TiO2 catalyst was used, a temperature increase at the front edge of the catalyst bed was observed upon introduction of the 3 mi pulse of CH4/O-2, In contrast, the temperature drop at the front edge of the catalyst bed was observed for a 1 ml pulse of CH4/O-2. These results seemed to exhibit two possibilities for a synthesis gas formation route over the Ru/TiO2 catalyst, The reaction pathway of the partial oxidation of methane with group VIII metal-loaded catalysts depended strongly upon the metal species and reaction conditions. (C) 2001 Elsevier Science B.V. All rights reserved.

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：KLUWER ACADEMIC/PLENUM PUBL  

Alkylation of benzene with ethane was carried out using various zeolite catalysts at temperature ranges of 400-550 degreesC. Loading of platinum onto zeolite greatly enhanced the yield of ethylbenzene. Among the zeolites tested, H-ZSM5 and H-MCM22 showed catalytic activities. By contrast, mordenite did not yield ethylbenzene. Moderate acid strength distribution is the key factor of zeolite catalysts. Optimum catalyst and conditions for this reaction are as follows. The platinum-loaded H-ZSM5 catalyst containing 6.8 wt% Pt, at a reaction temperature of 500 degreesC, afforded ethylbenzene and styrene formation rates of 14.2 and 0.8 mmol h(-1) g-cat(-1), respectively (benzene-based yields 7.3 and 0.4%). In the alkylation of benzene with ethane over platinum-loaded H-ZSM5. ethene was initially formed from ethane over the metallic platinum. Then the alkylation proceeded over the acid sites of H-ZSM5.

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記述言語：日本語   出版者・発行元：応用物理学会  

CiNii Books

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：CHEMICAL SOC JAPAN  

We found that oxidized diamond played a significant role to improve catalyst performance of Cr2O3 catalyst during the dehydrogenation of C2H6 to C2H4 in the presence of CO2.

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：ACADEMIC PRESS INC  

The reactivity of carbon species formed from methane decomposition over supported noble metal catalysts was examined. In the Ru-loaded case, the rate of formation of CHx species in the decomposition of CH4 and the amount of CHx species over Ru are independent of the type of support. However, the carbon species on Ru/La2O3 seems to be more uniform and reactive than that on Ru/Al2O3. After the decomposition of CH4 over Ru-loaded catalysts was carried out at 700 degrees C, a temperature-programmed reaction with D-2 was carried out. CD4 was the major product on all the supports, and only slight amounts of CH3D, CH2D2, and CHD3 were detected over La2O3, ZrO2, and Y2O3 supports. The reactivity of CHx species on Ru strongly depends on the supports. The reactivity of CHx species on Ru and Rh loaded on La2O3 can be divided into two categories, These categories are not based on the differences in the number of x in CHx species. On Ru, x in the CHx species is equal to nearly 0, with a very small portion having x = 2. On the other hand, x is almost exclusively 0 on Rh. It seems that Rh leads to a higher rate of decomposition for methane than does Ru. (C) 2000 Academic Press.

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：CHEMICAL SOC JAPAN  

Carbon dioxide could oxidize the reduced vanadium oxide species on MgO and keep vanadium species at a high oxidation state, during the dehydrogenation of ethylbenzene to styrene under carbon dioxide, giving a markedly high yield and selectivity of styrene.

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：ACADEMIC PRESS INC ELSEVIER SCIENCE  

The oxidation of ethane by oxygen was studied over silica catalysts supporting different amounts of vanadium with and without cesium. Three different catalytic properties of the product selectivity were observed, aldehyde formation, oxidative dehydrogenation (ODH), and combustion, depending upon the vanadium loading amount and the presence or the absence of cesium. A very low loading of vanadium (V:Si = 0.02-0.1 at.%) and the addition of Cs (Cs:Si = 1 at.%) on silica were found to be important for the formation of aldehyde. Not only acetaldehyde but also acrolein were observed in the aldehyde formation from ethane. On the other hand, catalysts with medium and high vanadium loadings (Vi:Si = 0.5-20 at.%) gave a dehydrogenated product, ethene, when Cs was not added to the catalysts. The addition of cesium to the catalysts with medium and high vanadium loadings changed the catalytic property from ODH to combustion. The different types of vanadyl species were identified by UV-visible and IR measurements in samples with different vanadium loadings. It was estimated that isolated vanadyl species with tetrahedral coordination, which were found mainly on the catalysts with vanadium loading lower than 0.5 at.%, became the active site for the aldehyde formation through the interaction with Cs. As a plausible reaction path giving acrolein from ethane, cesium-catalyzed cross-condensation between acetaldehyde and formaldehyde, formed in the reaction, was proposed. polymeric vanadyl species with octahedral coordination and vanadium-oxygen clusters with dioxo tetrahedral coordination were detected in the samples with medium (0.5-5.0 at.%) and high (10 and 20 at.%) vanadium loadings, respectively. Both species show the ODH catalytic property without cesium, but they bring about a deep oxidation of ethane if cesium is added to the catalysts. (C) 2000 Academic Press.

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：BALTZER SCI PUBL BV  

Dehydrogenation of isopropylbenzene to alpha-methylstyrene was carried out using various supported metal oxide catalysts in the presence of carbon dioxide. An activated carbon-supported vanadium oxide catalyst afforded a high activity in carbon dioxide atmosphere: the alpha-methylstyrene yield in carbon dioxide atmosphere was two times greater than that in an argon atmosphere at 723 K. In order to investigate the role of carbon dioxide in this reaction, we carried out temperature-programmed reduction (TPR) studies using both fresh and used catalysts. The TPR profiles clearly indicate that carbon dioxide could keep the surface of vanadium oxide at a high oxidation state.

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：BALTZER SCI PUBL BV  

Ga2O3 and Ga2O3/TiO2 catalysts were found to be effective agents for the dehydrogenation of ethane to ethene in the presence of carbon dioxide at 650 C-degrees. The activity of the Ga2O3 and Ga2O3/TiO2 catalysts in the presence of CO2 was 2-4 times higher than that without CO2. Ethene yields reached ca. 20-25% and selectivity was ca. 70-90% at 650 C-degrees in the 17% ethane and 83% CO2 feed at an SV of 9,000 ml/(g-cat h). The presence of CO2 markedly promoted dehydrogenation of ethane over Ga2O3 and Ga2O3/TiO2 catalysts. Furthermore, the promoting effect of CO2 on the aromatization of ethane and ethene over a Ga2O3+H/ZSM-5 catalyst was also observed above 650 C-degrees. Aromatics yields were higher than those without CO2.

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：ACADEMIC PRESS INC  

Mechanisms of partial oxidation of methane were studied using a pulsed reaction technique and temperature jump measurement. Catalyst bed temperatures were directly measured by introducing a pulse of a mixture of methane and oxygen (2/1), With Ir/TiO2 catalyst, a sudden temperature increase at the front edge of the catalyst bed was observed upon introduction of the pulse, but the temperature of the rear end of the catalyst bed increased only slightly. The synthesis gas production basically proceeded via a two-step path consisting of highly exothermic methane complete oxidation to give H2O and CO2, followed by the endothermic reforming of methane with H2O and CO2 over Ir/TiO2 catalyst. However, with Rh/TiO2 and Rh/Al2O3 catalysts, the temperature at the front edge of the catalyst bed decreased upon introduction of the CH4/O-2 (2/1) pulse, and a small increase in the temperature at the rear end was observed. At first, endothermic decomposition of CH4 to H-2 and deposited carbon or CHx probably took place at the front edge of the catalyst bed and then deposited carbon or generated CHx species would be oxidized into COx. However, on Rh/SiO2, synthesis gas was produced via a two-step path similar to the case of Ir/TiO2 catalyst. The reaction pathway of partial oxidation of methane with Rh-loaded catalysts depended strongly on the support materials. (C) 1999 Academic Press.

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：ELSEVIER SCIENCE BV  

Partial oxidation of methane to synthesis gas was carried out using supported iridium-nickel bimetallic catalysts, in order to reduce loading levels of iridium and nickel, and to avoid carbon deposition on nickel-based catalysts by adding iridium. The performance of supported iridium-nickel bimetallic catalysts in synthesis gas formation depended strongly upon the support materials. La2O3 gave the best performance among the support materials tested. Ir(0.25 wt%)-Ni(0.5 wt%)/La2O3 afforded 36% conversion of methane (CH4/O-2=5) to give CO and H-2 with the selectivities of above 90% at 800 degrees C, and those at 600 degrees C were 25.3% conversion of methane and CO and H-2 selectivities of about 80%, respectively. Reduced monometallic Ir(0.25 wt%)/La2O3 and Ni(0.5 wt%)/La2O3 catalysts did not produce synthesis gas at 600 degrees C. A higher conversion of methane was obtained by synergistic effects. The product concentrations of CO, H-2, and CO2, and CH4 conversion were maintained in high values, even increasing the space velocity of feed gas over Ir-Ni/La2O3 catalyst, indicating that rapid reaction takes place. As a by-product, a small amount of carbon deposition was observed, but carbon formation decreased with increasing the space velocity. On the other hand, with reduced monometallic Ni(10 wt%)/La2O3 catalyst, yield of synthesis gas and carbon decreased with increasing the space velocity. (C) 1999 Elsevier Science B.V. All rights reserved.

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：ELSEVIER SCIENCE BV  

A pulsed reaction technique was applied to discuss the effect of support on the activities and mechanisms in the CO2 reforming of methane over Ru catalyst. The reaction was carried out using a fixed bed reactor equipped with an on-line mass spectrometer. Four supports: La2O3, Y2O3 and ZrO2 which showed high activity and Al2O3, commonly used one in the reforming reaction, were compared when loaded with Ru.
After feeding CO2 at 600 degrees C, we introduced a pulse of CH4 over Ru/La2O3 catalyst under Ar steady flow. We observed the response of CO which was generated from the reaction with CHx on the ruthenium and the Ru-O-x formed during CO2 treatment or during the reaction of Ru-CHx with adsorbed CO2 onto the La2O3. Over Ru/Al2O3 catalyst, however, very small response of CO was observed. A pulse of (CO2)-C-13 was introduced under CH4 steady flow over Ru/La2O3, Ru/Y2O3 and Ru/ZrO2 catalysts. Symmetrical (CO)-C-13 responses were observed, but a small response of (CO)-C-12 from (CHx)-C-12 continued to evolve after generation of (CO)-C-13 from (CO2)-C-13 ceased.
The following reaction cycle is believed to occur in the CO2 reforming of methane on active supports: A part of metallic ruthenium reacted with CH4 to give Ru-CHx; simultaneously ruthenium metal could be oxidized with CO2 to give Ru-O-x and CO; and then, oxygen transfer from Ru-O-x to Ru-CHx took place to give CO and metallic ruthenium.
Distinct temperature increases in the catalyst bed for La2O3, Y2O3 and ZrO2 supports were observed with the introduction of CO2 pulses under Ar flow. On the other hand, a very small increase in the temperature of the catalyst bed was observed on Al2O3 These results indicate that CO2 reforming of CH4 with ruthenium loaded catalysts was strongly assisted by the activation of CO2 adsorbed on the basic sites. (C) 1999 Elsevier Science B.V. All rights reserved.

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：CHEMICAL SOC JAPAN  

Ethylbenzene was prepared from benzene and ethane, using platinum-loaded H-ZSM5 catalyst at 500 degrees C, giving the ethylbenzene and styrene space lime yields of 14.2 and 0.8 mmol h(-1) g(-1) of catalyst, respectively (benzene-based yields 6.9 and 0.4%).

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：BALTZER SCI PUBL BV  

A significant yield of aldehydes was obtained by the partial oxidation of ethane over alkali-modified Fe/SiO2 catalysts at 475(degrees)C (&gt;2% in the case of Cs-Fe/SiO2). Not only acetaldehyde and formaldehyde but also acrolein were produced in the present system. There are no reports regarding the catalysts for the direct acrolein formation from partial oxidation of ethane. Such significant promoting effect of alkali-modified Fe/SiO2 catalysts in the partial oxidation of hydrocarbons has never been observed. Aldol-type condensation for formation of acrolein could occur in the partial oxidation of ethane over alkali-modified Fe/SiO2 catalysts.

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：ROYAL SOC CHEMISTRY  

Gallium oxide is found to be an effective catalyst for the dehydrogenation of ethane to ethene in the presence of carbon dioxide at 650 degrees C, giving 18.6% ethene yield with a selectivity of 94.5%.

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：BALTZER SCI PUBL BV  

A partial oxidation of methane was carried our using iridium catalysts supported on several metal oxides. The productivity of the synthesis gas from methane was strongly affected by the choice of support oxides for the catalysts. The synthesis gas production proceeded basically via a two-step reaction consisting of methane combustion to give H2O and CO2, followed by the reforming of methane from CO2 and steam. Although the combustion and the reforming of methane from steam did not depend upon the catalyst support, a large variation in the catalytic activity fbr the reforming of methane from CO2 was observed over Ir catalysts with different supports. The support activity order in the reforming of methane from CO2 with iridium catalysts was as follows: TiO2 greater than or equal to ZrO2 greater than or equal to Y2O3 &gt; La2O3 &gt; MgO greater than or equal to Al2O3 &gt; SiO2. The same order was observed in the synthesis gas production from the partial oxidation of methane.

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Japan Petroleum Institute  

Reforming of heptane with CO2, using Ni and Ru catalysts was carried out. Ruthenium, supported on La2O3 exhibited high catalytic activity at 600°C in the CO2 reforming of heptane, but the activity decreased rapidly. Deactivation of the catalyst during reaction was reduced by adding LiOH(Li/Ru=3) to the catalyst, which eliminated carbon deposition. Ratio of CO/H2 was greater than that expected from the stoichiometric reaction of CO2 and C7H16. This is considered to be caused by the reverse water gas shift reaction, giving CO by reducing CO2 with H2 produced. To maintain higher catalytic activity, the formation of La2O2CO3 seems to be essential.

DOI： 10.1627/jpi1958.40.179

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：CHEMICAL SOC JAPAN  

Ir(5 wt%) supported on TiO2 afforded a high activity for the partial oxidation of methane into CO and H2 With the selectivity of above 80% at 600 degrees C.

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記述言語：日本語   出版者・発行元：関西大学先端科学技術推進機構  

CiNii Books

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出願人：(独)物質・材料研究機構、凸版印刷(株)

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出願人：(独)物質・材料研究機構、凸版印刷(株)

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出願人：(独)物質・材料研究機構、凸版印刷(株)

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出願人：(独)物質・材料研究機構

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記述言語：日本語   出版者・発行元：関西大学先端科学技術推進機構  

CiNii Books

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出願人：(独)物質・材料研究機構、凸版印刷(株)

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出願人：(独)物質・材料研究機構、凸版印刷(株)

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出願人：(独)物質・材料研究機構、凸版印刷(株)

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特許

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特許

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出願人：(独)物質・材料研究機構、凸版印刷(株)

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出願人：(独)物質・材料研究機構、凸版印刷(株)

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出願人：(独)物質・材料研究機構、凸版印刷(株)

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出願人：(独)物質・材料研究機構、凸版印刷(株)

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出願人：(独)物質・材料研究機構、凸版印刷(株)

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出願人：(独)物質・材料研究機構、凸版印刷(株)

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出願人：(独)物質・材料研究機構、凸版印刷(株)

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出願人：(独)物質・材料研究機構、凸版印刷(株)

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記述言語：日本語   出版者・発行元：関西大学理工学会  

CiNii Books

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出願人：(独)物質・材料研究機構、凸版印刷(株)

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出願人：(独)物質・材料研究機構、凸版印刷(株)

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出願人：(独)物質・材料研究機構、凸版印刷(株)

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出願人：(独)物質・材料研究機構、凸版印刷(株)

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出願人：(独)物質・材料研究機構、積水化学工業(株)

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出願人：(独)物質・材料研究機構、凸版印刷(株)

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出願人：(独)物質・材料研究機構、凸版印刷(株)

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出願人：(独)物質・材料研究機構、凸版印刷(株)

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出願人：(独)物質・材料研究機構、積水化学工業(株)

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出願人：(独)物質・材料研究機構、凸版印刷(株)

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出願人：(独)物質・材料研究機構、凸版印刷(株)

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記述言語：日本語   出版者・発行元：日刊工業新聞社  

CiNii Books

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出願人：(独)物質・材料研究機構、積水化学工業(株)

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出願人：(独)物質・材料研究機構、積水化学工業(株)

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出願人：(独)物質・材料研究機構、凸版印刷(株)

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出願人：(独)物質・材料研究機構、積水化学工業(株)

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出願人：(独)物質・材料研究機構、凸版印刷(株)

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出願人：(独)物質・材料研究機構、凸版印刷(株)

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出願人：(独)物質・材料研究機構、凸版印刷(株)

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出願人：(独)物質・材料研究機構

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出願人：(独)物質・材料研究機構

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出願人：(独)物質・材料研究機構

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出願人：(独)物質・材料研究機構、積水化学工業(株)

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出願人：(独)物質・材料研究機構、積水化学工業(株)

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出願人：(独)物質・材料研究機構、凸版印刷(株)

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出願人：(独)物質・材料研究機構、積水化学工業(株)

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出願人：(独)物質・材料研究機構、積水化学工業(株)

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記述言語：日本語   出版者・発行元：エヌ・ティー・エス  

CiNii Books

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出願人：(独)物質・材料研究機構、積水化学工業(株)

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出願人：(独)物質・材料研究機構、積水化学工業(株)

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出願人：(独)物質・材料研究機構、積水化学工業(株)

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出願人：(独)物質・材料研究機構

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出願人：(独)物質・材料研究機構、積水化学工業(株)

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出願人：(独)物質・材料研究機構、積水化学工業(株)

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記述言語：日本語   出版者・発行元：東洋大学工業技術研究所  

CiNii Books

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出願人：(独)物質・材料研究機構、積水化学工業(株)

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出願人：(独)物質・材料研究機構

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出願人：(独)物質・材料研究機構

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出願人：(独)物質・材料研究機構

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記述言語：日本語   出版者・発行元：エヌ・ティー・エス  

CiNii Books

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記述言語：日本語   出版者・発行元：オ-ム社  

CiNii Books

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開催地：青山学院大学 相模原キャンパス＋オンライン開催  

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開催地：青山学院大学 相模原キャンパス＋オンライン開催  

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開催地：青山学院大学 相模原キャンパス＋オンライン開催  

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開催地：青山学院大学 相模原キャンパス＋オンライン開催  

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開催地：日本工業大学 オンライン開催  

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開催地：オンライン開催  

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開催地：オンライン開催  

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開催地：オンライン開催  

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開催地：オンライン開催  

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開催地：兵庫県立大学 オンライン開催  

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開催地：兵庫県立大学 オンライン開催  

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開催地：兵庫県立大学 オンライン開催  

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開催地：兵庫県立大学 オンライン開催  

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開催地：オンライン開催  

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開催地：オンライン開催  

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開催地：Online Meeting  

Lithium-ion batteries (LIBs) are used in various fields due to their high energy density and high cycle characteristics. In general, graphite materials are used for the negative electrode materials for lithium-ion batteries (LIBs). However, since the amount of Li ion that can be stored in the graphite material of the negative electrode is approaching the theoretical value for LIBs, a significant increase in capacity cannot be expected. Calcium ion batteries (CIBs) use Ca ion as charge carriers. Therefore, they can be expected to have twice the capacity of LIBs. In LIBs, charge and discharge mechanism occurs by intercalation and deintercalation of Li ion into graphite layers. However, Ca ion are poor in reactivity, intercalation and deintercalation of Ca ion do not occur in the graphite negative electrode, and charge and discharge capacity cannot be obtained. For this reason, we used Marimo Nano Carbon (MNC) as a new negative electrode material. MNC is an aggregate of carbon nano filaments (CNF). CNF has a layered structure similar to graphite and also has amazing electronic properties and many other unique properties. This CNF has coin-stacked structure in which graphene layers are stacked, and the edge surface is exposed. Hence, we expected that MNC negative electrode would react with less reactive Ca ions and indicated larger charge / discharge capacity than that of the graphite negative electrode. In this study, we evaluated MNC negative electrode performance. For MNC synthesis, nano metal particles carried on oxidized diamond were used. Oxidized diamond has oxygen-containing functional groups arranged regularly. Thus, nano metal particles are a highly dispersed on it. Pd metal was used for carried metal. Pd metal could synthesized CNF having coin-stacked structures. Pd metal was carried on oxidized diamond by metal nano-colloidal method. C2H4 as a feedstock for CNF was used, and MNC was synthesized by the chemical vapor deposition (CVD) method. When MNC was used as the negative electrode material, the charge and discharge capacity was larger than that of the graphite negative electrode. In addition, the intercalation of Ca ions between the graphene layers was confirmed.

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開催地：Online Meeting  

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開催地：Online Meeting  

An electric double layer capacitor (EDLC) is charged and discharged by the physical adsorption and desorption of electrolyte ions on the electrode surface. EDLC has the advantage that it can be charged and discharged at high speed and has a long life. EDLC is used in memory backup power supplies for personal computers and energy recovery systems for power regenerative brakes in hybrid vehicles and other applications. Therefore, higher energy density is required.

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開催地：関西大学（大阪府）  

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開催地：関西大学（大阪府）  

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開催地：北海道大学  

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開催地：福岡工業大学  

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開催地：東洋大学（埼玉県川越市）  

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開催地：神奈川大学（横浜）  

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開催地：甲南大学(神戸)  

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開催地：東京工業大学（大岡山キャンパス）  

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開催地：東京工業大学（大岡山キャンパス）  

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開催地：北九州国際会議場・西日本総合展示場(福岡県北九州市)  

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開催地：北九州国際会議場・西日本総合展示場(福岡県北九州市)  

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開催地：名古屋工業大学(愛知)  

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開催地：名古屋工業大学(愛知)  

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開催地：名古屋工業大学(愛知)  

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開催地：名古屋工業大学(愛知)  

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開催地：金沢大学(石川)  

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開催地：金沢大学(石川)  

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開催地：名古屋国際会議場(愛知)  

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開催地：名古屋国際会議場  

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開催地：北海道科学大学(北海道)  

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開催地：芝浦工業大学(東京都 豊洲キャンパス)  

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開催地：桐生市市民文化会館(群馬)  

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開催地：横浜情報文化センター(神奈川)  

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開催地：横浜情報文化センター(神奈川)  

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開催地：桐生市市民文化会館(群馬県)  

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開催地：桐生市市民文化会館(群馬県)  

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開催地：Gothenburg (Sweden)  

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開催地：パシフィコ横浜(神奈川)  

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開催地：パシフィコ横浜(神奈川)  

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開催地：パシフィコ横浜(神奈川)  

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開催地：横浜情報文化センター(横浜市)  

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開催地：横浜情報文化センター(横浜市)  

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開催地：横浜情報文化センター(横浜市)  

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開催地：千葉大学(千葉市)  

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開催地：千葉大学(千葉市)  

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開催地：千葉大学(千葉市)  

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開催地：The University of Tokyo (Tokyo, Japan)  

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開催地：Honolulu (Hawaii, USA)  

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開催地：Honolulu (Hawaii, USA)  

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開催地：Honolulu (Hawaii, USA )  

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開催地：朱鷺メッセ(新潟市)  

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開催地：朱鷺メッセ(新潟市)  

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開催地：東北大学(仙台市)  

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開催地：京都大学 宇治キャンパス(宇治市)  

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開催地：大阪（関西大学）  

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開催地：大阪（関西大学）  

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開催地：大阪（関西大学）  

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開催地：愛知（名古屋国際会議場）  

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開催地：愛知（名古屋国際会議場）  

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開催地：Shiga, Japan  

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開催地：Dresden, Germany  

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開催地：Niigata, Japan  

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開催地：Niigata, Japan  

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開催地：日本大学（船橋キャンパス）  

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開催地：日本大学（船橋キャンパス）  

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開催地：日本大学（船橋キャンパス）  

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開催地：東海大学（湘南キャンパス）  

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開催地：関東学院大学（横浜・金沢八景キャンパス）  

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開催地：横浜情報文化センター(神奈川)  

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開催地：大野城まどかぴあ(福岡)  

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開催地：大野城まどかぴあ(福岡)  

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開催地：京都大学  

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開催地：北海道大学  

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開催地：Fukuoka University (Japan)  

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開催地：Fukuoka University (Japan)  

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開催地：Fukuoka University (Japan)  

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開催地：名古屋大学  

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開催地：東京理科大学 野田キャンパス  

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開催地：東京理科大学 野田キャンパス  

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開催地：東京理科大学 野田キャンパス  

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開催地：名古屋大学  

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開催地：青山学院大学 相模原キャンパス  

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開催地：京都教育文化センター  

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開催地：京都教育文化センター  

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開催地：京都教育文化センター  

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開催地：京都教育文化センター  

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開催地：千葉大学  

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開催地：福岡工業大学(福岡)  

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開催地：福岡工業大学(福岡)  

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開催地：Riva del Garda (Italy)  

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開催地：同志社大学(京都)  

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開催地：Riva del Garda (Italy)  

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開催地：同志社大学(京都)  

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開催地：福岡工業大学(福岡)  

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開催地：同志社大学(京都)  

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開催地：同志社大学(京都)  

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開催地：(独)物質・材料研究機構(茨城)  

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開催地：(独)物質・材料研究機構(茨城)  

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開催地：(独)物質・材料研究機構(茨城)  

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開催地：神奈川工科大学  

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開催地：日本工業大学  

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開催地：日本工業大学  

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開催地：産業技術総合研究所(つくば中央)  

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開催地：Honolulu(U.S.A)  

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開催地：Honolulu(U.S.A)  

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開催地：Honolulu(U.S.A)  

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開催地：Honolulu(U.S.A)  

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開催地：Yokohama(Japan)  

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開催地：Yokohama(Japan)  

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開催地：早稲田大学(東京)  

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開催地：東京都市大学  

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開催地：名古屋市  

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開催地：名古屋市  

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開催地：名古屋市  

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開催地：名古屋市  

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開催地：Kyoto  

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開催地：京都市  

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開催地：京都市  

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開催地：神奈川工科大学  

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開催地：姫路市民会館  

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開催地：姫路市民会館  

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開催地：姫路市民会館  

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開催地：姫路市民会館  

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開催地：姫路市民会館  

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開催地：長崎大学  

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開催地：Vancouver (Canada)  

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開催地：Vancouver (Canada)  

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開催地：東海大学  

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開催地：東海大学  

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開催地：Hamamatsu  

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開催地：Boston  

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開催地：石川県地場産業振興センター  

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開催地：石川県地場産業振興センター  

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開催地：千葉工業大学  

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開催地：千葉工業大学  

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開催地：千葉工業大学  

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開催地：千葉工業大学  

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開催地：千葉工業大学  

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開催地：千葉工業大学  

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開催地：早稲田大学総合学術情報センター  

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開催地：早稲田大学総合学術情報センター  

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開催地：早稲田大学総合学術情報センター  

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開催地：早稲田大学総合学術情報センター  

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開催地：Honolulu (America)  

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開催地：Honolulu (America)  

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開催地：Honolulu (America)  

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開催地：Honolulu (America)  

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開催地：Honolulu (America)  

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開催地：東北学院大学  

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開催地：東京都立大学  

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開催地：学術総合センター・一橋記念講堂（東京）  

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開催地：関西学院大学  

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開催地：東京都立大学  

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開催地：東京都立大学  

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開催地：千葉大学  

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開催地：Montreal (Canada)  

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開催地：Tsukuba (Japan)  

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開催地：Paris(France)  

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開催地：Paris(France)  

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開催地：Paris(France)  

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開催地：Paris(France)  

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開催地：Tsukuba (Japan)  

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開催地：Tokyo (Japan)  

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開催地：Tsukuba (Japan)  

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開催地：Tokyo (Japan)  

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開催地：関西大学  

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開催地：関西大学  

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開催地：Tokyo (Japan)  

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開催地：Tokyo (Japan)  

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開催地：茨城大学  

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開催地：横浜国立大学  

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開催地：茨城大学  

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開催地：茨城大学  

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開催地：神奈川大学  

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開催地：淡路夢舞台  

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開催地：函館国際ホテル  

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開催地：函館国際ホテル  

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開催地：大分大学  

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開催地：大分大学  

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開催地：Limerick (Ireland)  

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開催地：Limerick (Ireland)  

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開催地：Limerick (Ireland)  

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開催地：学術総合センター  

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開催地：甲南大学  

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開催地：関西大学  

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開催地：甲南大学  

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開催地：Honolulu (Hawaii, America)  

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開催地：Honolulu (Hawaii, America)  

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開催地：Honolulu (Hawaii, America)  

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開催地：鳥取大学  

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開催地：Berlin (Germany)  

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開催地：アルカディア市ヶ谷(東京)  

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開催地：関西大学  

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開催地：秋田大学  

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開催地：Rimini (Italy)  

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開催地：Rimini (Italy)  

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開催地：神奈川大学  

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開催地：神奈川大学  

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開催地：Zao (Miyagi, Japan)  

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開催地：St. Petersburg, Russia  

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開催地：同志社大学  

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開催地：同志社大学  

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開催地：同志社大学  

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開催地：信州大学  

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開催地：北海道大学  

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開催地：立教大学  

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開催地：九州大学  

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開催地：室蘭工業大学  

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開催地：立命館大学  

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