SELECTIVE AMMOXIDATION OF PROPANE OVER MULTICOMPONENT OXIDE CATALYSTS

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The ammoxidation of propane to acrylonitrile was investigated over various multicomponent mixed oxide catalysts. Bi3GaMo2 oxide, Bi0.85V0.55Mo0.4.5 oxide and Bi2TiMo oxide showed a good selectivity to acrylonitrile. The catalytic performance was strongly dependent on the components constituting the oxides due to the concentration of defects, the nature of the component and the mixed oxide phases. The effect of support type on the catalytic performance of Bi0.85V0.55Mo0.45 oxide showed that selectivity to acrylonitrile decreased in the order silica > alumina > magnesia. The catalytic performance of Bi0.85V0.55Mo0.45 oxide was improved by the addition of a small amount of a component such as magnesium, calcium and tellurium. The catalytic performance of Bi3GaMo2 oxide catalyst, however, decreased significantly with the addition of a small amount of alkali metal (Li, Na, K, Cs).
Publisher
ELSEVIER SCIENCE BV
Issue Date
1994-03
Language
English
Article Type
Article
Keywords

TRICOMPONENT METAL-OXIDES; HETEROGENEOUS STEPS; SCHEELITE STRUCTURE; OXIDATION; PHASE

Citation

APPLIED CATALYSIS A-GENERAL, v.110, no.2, pp.207 - 216

ISSN
0926-860X
URI
http://hdl.handle.net/10203/250741
Appears in Collection
CBE-Journal Papers(저널논문)
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