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 00:00:00 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), Vol. 57:2
• Country of Publication: United States
• Language: English

Related Subjects

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