Effects of addition of vanadium to alumina-supported ruthenium catalyst on adsorption and hydrogenation of carbon monoxide.

スポンサーリンク

概要

• 論文の詳細を見る

• The hydrogenation of carbon monoxide to hydrocarbons (Fischer-Tropsch synthesis) was studied over RU/Al<SUB>2</SUB>O<SUB>3</SUB> catalysts to which transition metals such as V, Cr, Mn, and Ag were added. Among these additives, V was most effective for the suppression of methane formation, without changing the olefin/paraffin ratio and the propagation probability. The catalytic activity decreased and the infrared band of adsorbed carbon monoxide shifted only slightly upon the V addition, showing little change in the electronic state of Ru. The particle size of the Ru remained almost unchanged, although the degree of hydrogen adsorption decreased to half. This indicates that Ru particles were partially covered by V (or an oxide of V). The effect on the turnover frequency of hydrogenation of CO was compared with those for the hydrogenation of benzene, and the hydrogenolysis of ethane. These effects were found to be very similar to an ensemble effect reported for Ru–Cu/SiO<SUB>2</SUB> catalysts. On the basis of these results, it is concluded that the addition of V brought about an effect similar to the ensemble effect.

• 公益社団法人 日本化学会の論文

著者

• Okuhara Toshio

  Department Of Applied Chemistry Faculty Of Engineering The University Of Tokyo

• Misono Makoto

  Department Of Applied Chemistry Faculty Of Engineering The University Of Tokyo

• Enomoto Toshiyuki

  Department Of Mechanical Engineering Graduate School Of Engineering Osaka University

• Enomoto Toshiyuki

  Department of Synthetic Chemistry, Faculty of Engineering, The University of Tokyo

関連論文

• Migration of Copper Ions in Cu-MFI without Destruction of Zeolite Lattice or Dealumination upon Hydrothermal Treatment at 923K
• Microporous Heteropoly Compound as a Shape Selective Catalyst : Cs_H_PW_O_
• Selective Alkylation of p-Xylene with 2-Methylpropene by 12-Tungstophosphoric Acid
• Mobility and Exchange of Protons and Methanol Molecules in H_3PW_O_ Pseudoliquid Phase Detected by Solid State NMR
• Active crystal Face of Vanadyl Pyrophosphate for Catalytic Oxidation of n-Butane to Maleic Anhydride
• Alkylation of Isobutane with Butenes Catalyzed by a Cesium Hydrogen Salt of 12-Tungstophosphoric Acid
• Skeletal Isomerization of n-Butane Catalyzed by an Acidic Cesium Salt of 12-Tungstophosphoric Acid
• Novel Microstructures of Self-Assembled Microcrystallites of (NH_4)_3PW_O_ and Cs_3PW_O_
• Porous Aggregates of Unidirectionally Oriented(NH_4)_3PW_O_Microcrystallites : Epitaxial Self-Assembly
• Surface Acidity of Cesium Hydrogen Salts of 12-Tungstophosphoric Acid Characterized by Low-Temperature CO Adsorption
• In Situ Raman Spectroscopic Investigation of Surface Redox Mechanism of Vanadyl Pyrophosphate
• The First Direct Detection of Rapid Migration of Acidic Protons between Heteropolyanions in H_3PW_O_・nH_2O (n
• Antibiotic time-lag combination therapy with fosfomycin for postoperative intra-abdominal abscesses
• Protocataltsis of H_3PW_O_-Choloophenol Decomposotion in Aqueous Media^
• Photocatalyzed Decomposition of 4-Chlorophenol by Keggin-Type Heteropolytungstate^#
• Catalytic Removal of Trimethylamine, an Offensive-Odor Component, by Selective Oxidative Decomposition to N_2, Co_2, and H_2O over Copper-Exchanged Zeolites
• Essential Role of Acidity in the Catalytic Reduction of Nitrogen Monoxide by Methane in the Presence of Oxygen over Palladium-Loaded Zeolites
• Oxidation of Cyclohexane with Molecular Oxygen Efficiently Catalyzed by Di-Iron(III)-Substituted Silicotungstate, γ-SiW_{Fe(OH_2)}_2O_^, Including Radical-chain Mechanism
• Remarkable Effect of Iron-Substitution for Molybdenum in Phosphododecamolybdate on Oxidative Dehydrogenation of 2-Propanol
• Hydrothermal Synthesis of Cubic Mesostructured Vanadium-Phosphorus Oxide
• Promotive Effects of the Addition of Alkaline Earth Metals to Ce-ZSM-5 Catalyst for the Reduction of Nitrogen Monoxide in the Presence of Propene and Oxygen
• Comparison of Catalytic Decomposition of Dinitrogen Oxide and Nitrogen Monoxide over Cu/ZSM-5 and Cu/Y Zeolites
• Catalytic Reduction of Nitrogen Monoxide by Methane over Palladium-Loaded Zeolites in the Presence of Oxygen
• Chemical Species Active for Selective Oxygenation of Methane with Hydrogen Peroxide Catalyzed by Vanadium-containing Compounds
• Development of a cutting tool with a nano/micro-textured surface-Improvement of anti-adhesive effect by considering the texture patterns
• Combined Hepatic Resection with the Inferior Vena Cava and Diaphragm and Reconstruction Using an Equine Pericardial Patch : Report of a Case
• Bacteriological analysis of bile in acute cholecystitis according to the Tokyo guidelines
• Stereochemical studies of elimination reactions of 2-bromobutane and 2,3-dibromobutane over bivalent-ion exchanged silica gels.
• Stereochemical studies of elimination reactions of 2-bromobutane and 2,3-dibromobutane over alkali-ion exchanged silica gels.
• Effects of alkali metals added to silica-supported ruthenium catalysts on hydrogenation of carbon monoxide.
• Catalysis by heteropoly compounds. XII. Absorption properties of 12-tungstophosphoric acid and its salts.
• Catalysis by heteropoly compounds. XIII. An infrared study of ethanol and diethyl ether in the pseudoliquid phase of 12-tungstophosphoric acid.
• Catalytic properties of perovskite-type mixed oxides (ABO3) consisting of rare earth and 3d transition metals. The roles of the A- and B-site ions.
• Effects of addition of vanadium to alumina-supported ruthenium catalyst on adsorption and hydrogenation of carbon monoxide.
• Novel effects of K-addition to Ru/SiO2 on conversion of cyclohexane.
• Catalysis by heteropoly compounds. III. The structure and properties of 12-heteropolyacids of molybdenum and tungsten (H3PMo12-xWxO40) and their salts pertinent to heterogeneous catalysis.
• Catalytic properties of iron oxide. III. Oxidative dehydrogenation of butenes over iron oxide catalysts.
• The dehydrogenation of cyclohexane by the use of a porous-glass reactor.
• Catalytic properties of iron oxides. II. Isotopic exchange of oxygen, oxidation of carbon monoxide, and reduction-oxidation mechanism.
• Analysis of thermal desorption curves for heterogeneous surfaces. I. A linear variation of the activation energy of desorption.
• Stereospecific Dehydrobromination of dl- and meso-2,3-Dibromobutanes over Solid Catalysts
• The Catalytic Activity and Selectivity of Acidic Metal Salt Catalysts for n-Butene Isomerization
• Catalyst Isotope Effect in n-Butene Isomerization Catalyzed by Metal Sulfates
• Preparation of vanadium-phosphorus mixed oxide (P/V=1) catalysts and their application to oxidation of butane to maleic anhydride.
• Changes in the therapeutic strategy for acute cholecystitis after the Tokyo guidelines were published

もっと見る 閉じる

スポンサーリンク