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THE REACTIVITY OF ADSORBED CARBON ON VANADIUM PROMOTED RHODIUM CATALYSTS

被引：27
作者：
KOERTS, T
VANSANTEN, RA
机构：
[1] Schuit Institute of Catalysis, Department of Inorganic chemistry and catalysis, University of Technology, MB Eindhoven, 5600
来源：
CATALYSIS LETTERS | 1990年 / 6卷 / 01期
关键词：
adsorbed carbon; carbon chain growth; metal-carbon bond strength; promoter action; quantum theoretical calculations; Rhodium/vanadium catalyst;
D O I：
10.1007/BF00764052
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The hydrogenation reactivity of surface carbon deposited by CO decomposition was investigated for a rhodium-vanadium catalyst. It appeared that the rate of methanation of reactive surface carbon is decreased by vanadium. The reactivity towards C2+ hydrocarbons is enhanced by vanadium. The relation between stronger adsorbed carbon atoms and the formation of higher hydrocarbons is discussed. ASED calculations support the proposal that changes in metal-carbon bond strength have a significantly larger effect on the rate of methanation than on carbon chain growth. © 1990 J.C. Baltzer A.G. Scientific Publishing Company.
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页码：49 / 57
页数：9
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