Disproportionation of propylene over MoO3-SiO2 catalyst with various treatments.

スポンサーリンク

概要

• 論文の詳細を見る

• Disproportionation of propylene over MoO<SUB>3</SUB>–SiO<SUB>2</SUB> (atomic ratio: Mo/Si=1/25) catalyst treated with HCl and aqueous ammonia was studied in the temperature range 350–600 °C under atmospheric pressure. The activity of MoO<SUB>3</SUB>–SiO<SUB>2</SUB> catalyst extracted with aqueous ammonia remained for a long time, since most of free MoO<SUB>3</SUB> was removed from the MoO<SUB>3</SUB>–SiO<SUB>2</SUB> surface. This gave rise to increase in the selectivity for disproportionation of propylene to ethylene and butenes and decrease in the selectivity for hydrogenation, isomerization and polymerization. When MoO<SUB>3</SUB>–SiO<SUB>2</SUB> not subjected to treatment was pretreated by H<SUB>2</SUB> gas, it showed higher catalytic activity and lower selectivity for disproportionation than the one treated by N<SUB>2</SUB> gas.

• 公益社団法人 日本化学会の論文

著者

• Sodesawa Toshiaki

  Department Of Applied Chemistry Faculty Of Engineering Chiba University

• Kamiya Yoshio

  Department of Applied Chemistry Faculty of Engineering The University of Tokyo

• Ogata Eisuke

  Department of Reaction Chemistry, Faculty of Engineering, University of Tokyo

関連論文

• Phase separation in the system with sodium silicate and sodium dodecyl sulfate under acidic conditions
• A Change in Gastric Mucosal Ascorbic Acid Status with the Formation, Progression, and Recovery of Compound 48/80-induced Acute Gastric Mucosal Lesions in Rats
• Structural and Catalytic Properties of Silica-Coated Alumina
• Nickel Oxide Particles Coated with Silica
• Fabrication of Microreactor Using Glass Capillary with Cu/SiO_2 Layer
• Dispersion Control of Ni Particles in Porous Silica by Solution Exchange of Wet Silica Gel
• Fe_2O_3Particles Coated with Silica Using TEOS
• Preparation of Microporous Silica Gel by Sol-Gel Process in the Presence of Ethylene Oligomers
• Vapor-Phase Synthesis of Symmetric Ketone from Alcohol over CeO_2-Fe_2O_3 Catalysts
• Pore Size Control of High Surface-Area Silica by Use of Citric Acid
• Analysis of Volatile Organic Compounds (VOCs) in the Urban Atmosphere of Beijing
• Formation of 2,6-Naphthalenedicarboxylic Acid by the Co-Mn-Br-Catalyzed Autoxidation of 2,6-Diethylnaphthalene in Acetic Acid
• Formation of Benzenecarboxylic Acids from Bituminous Coal by Means of Oxygen-oxidation in Alkaline Medium
• Ozonization of organic compounds. VI. Relative reactivity of protic solvents toward carbonyl oxide.
• Phenolic solvent-assisted hydrogenolysis of trans-stilbene.
• Photoinduced electron transfer oxidation. I. 9,10-Dicyanoanthracene-sensitized photooxidation of hindered phenols.
• Spectrophotometric study on the complex formation of hydroperoxide with tetraphenylporphyrin cobalt(II).
• Interaction of galvinoxyl radical with ascorbic acid, cysteine, and glutathione in homogeneous solution and in aqueous dispersions.
• Ligand effects of 2,2'-bipyridine in the decomposition of 1,2,3,4-tetrahydro-1-naphthyl hydroperoxide catalyzed by cobalt(II) salt.
• Ozonization of organic compounds. VII. Carboxylic acids, alcohols, and carbonyl compounds.
• Ozonization of organic compounds. V. Aromatic compounds.
• The liquid-phase oxidation of methylbenzenes by the cobalt-copper-bromide system.
• Oxidation of lipids. XIII. Antioxidant activities of .ALPHA.-, .BETA.-, .GAMMA.-, and .DELTA.-tocopherols.
• The oxidation of toluene by cobalt-copper-bromide system. A side-chain acetoxylation.
• Oxidation of lipids. I. Quantitative determination of the oxidation of methyl linoleate and methyl linolenate.
• Oxidation of lipids. V. Oxidation of methyl linoleate in aqueous dispersion.
• The Metal-Catalyzed Autoxidation of Cumene
• Oxidative degradation of polymers. V. Ozonization of polypropylene and polystyrene in carbon tetrachloride.
• Oxidation of lipids. XII. Inhibition of oxidation of soybean phosphatidylcholine and methyl linoleate in aqueous dispersions by uric acid.
• Oxidation of lipids. IX. Decomposition of methyl linoleate and methyl linolenate hydroperoxides in solution.
• Oxidation of lipids. XIV Inhibition of oxidation of methyl linoleate by fatty acid esters of L-ascorbic acid.
• Oxidation of lipids. II. Rate of inhibition of oxidation by .ALPHA.-tocopherol and hindered phenols measured by chemiluminescence.
• Oxidation of lipids. VIII. Synergistic inhibition of oxidation of phosphatidylcholine liposome in aqueous dispersion by vitamin E and vitamin C.
• A study of the color of coal liquids. II Involvement of light, oxygen, phenols, and aromatic amines in formation of colored materials from Wandoan-coal-derived liquids.
• The photocycloaddition of 6-substituted phenanthridines to electron-rich olefins.
• Oxidative degradation of polymers. VI. Photooxidation of polystyrene powder and some model compounds.
• Liquid phase disproportionation of propylene over MoO3-Al2O3 catalyst in the presence of solvents.
• Effects of pressure on the disproportionation of olefins over MoO3-Al2O3 and Re2O7-Al2O3 catalysts.
• Disproportionation of propylene over MoO3-SiO2 catalyst with various treatments.
• Reaction of dioxygen complexes with catechols.
• Studies on the liquid phase oxidation of nitroalkylbenzenes catalyzed by transition metal and bromide ions.
• Autoxidation of atactic polypropylene and related alkanes. Rates and reactivities toward peroxy radicals.
• Catalysis of Manganese Salts in the Autoxidation of Cyclohexanone

もっと見る 閉じる

スポンサーリンク