Study of metal oxide catalysts in the olefin oxidation from their reduction behavior--1. Reduction of various metal oxides with propylene

Journal Article · Sun Apr 01 04:00:00 EST 1979 · J. Catal.; (United States)

DOI:https://doi.org/10.1002/chin.197926143· OSTI ID:6811713

Aso, I; Nakao, M; Yamazoe, N; Seiyama, T

At 500/sup 0/-550/sup 0/C, propylene reduced one or very few surface layers of the oxides of titanium, chromium, zinc, tin, indium, and tungsten. Carbon dioxide formation decreased and formation of partially oxidized products such as benzene and hexadiene increased to a maximum as the reaction progressed. The rates and product selectivities of the reduction of various other oxides varied, e.g., Bi/sub 2/O/sub 3/, was partly reduced to bulk metal with formation of 1,5-hexadiene, 1,3-cyclohexadiene, benzene, and carbon dioxide; and manganese dioxide was reduced in steps to bulk manganous oxide, with selectivity for benzene changing with each step. The oxides of vanadium, iron, cobalt, nickel, copper, and molybdenum also underwent bulk reduction. The coincident selectivities for acrolein, benzene or hexadiene, and carbon dioxide during reduction of a particular oxide and catalytic oxidation of propylene by that oxide suggests not only that oxide oxygens participate in the reaction, but that the metal-oxygen cleavage also controls the oxidation reaction. The relationship between metal oxide reducibility and catalytic activity and selectivity is further discussed.

• Research Organization: Kyusliu Univ.
• OSTI ID: 6811713
• Journal Information: J. Catal.; (United States), Journal Name: J. Catal.; (United States) Vol. 57:2; ISSN JCTLA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
400301 -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
ALKENES
CATALYSTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL REACTIONS
CHROMIUM COMPOUNDS
CHROMIUM OXIDES
DOCUMENT TYPES
HYDROCARBONS
INDIUM COMPOUNDS
INDIUM OXIDES
KINETICS
MANGANESE COMPOUNDS
MANGANESE OXIDES
ORGANIC COMPOUNDS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
PROPYLENE
REACTION KINETICS
REDUCTION
REVIEWS
SURFACE PROPERTIES
TIN COMPOUNDS
TIN OXIDES
TITANIUM COMPOUNDS
TITANIUM OXIDES
TRANSITION ELEMENT COMPOUNDS
TUNGSTEN COMPOUNDS
TUNGSTEN OXIDES
ZINC COMPOUNDS
ZINC OXIDES