COMPLETE CATALYTIC-OXIDATION OF BENZENE OVER SUPPORTED VANADIUM-OXIDES MODIFIED BY SILVER

被引：23
|
作者：
VASSILEVA, M [1 ]
ANDREEV, A [1 ]
DANCHEVA, S [1 ]
机构：
[1] BULGARIAN ACAD SCI, INST KINET & CATALYSIS, STR ACAD G BONCHEV BL 11, BU-1113 SOFIA, BULGARIA
来源：
APPLIED CATALYSIS | 1991年 / 69卷 / 02期
关键词：
SILVER-VANADIA ALUMINA; BENZENE COMPLETE OXIDATION;
D O I：
10.1016/S0166-9834(00)83304-7
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：
A supported metal-metal oxide system, Ag-V2O5/gamma-Al2O3, was found and studied. It exhibited high catalytic activity in the complete oxidation of one of the most difficult to oxidize hydrocarbons, benzene, with oxygen from the air. This system is able to operate at high liquid hourly space velocity values. At appropriate values of the vanadium:silver ratio, it is possible to develop catalytically active samples of optimum ratio between the V5+ and V4+ ions. This optimum ratio is kept by establishing a dynamic equilibrium between these ions in the redox process owing to the promotional effect of finely-divided metallic silver which activates the oxygen. The high catalytic activity is associated with clustered V4+ ions in the matrix of vanadium pentoxide.
引用
收藏
页码：221 / 234
页数：14
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