INFLUENCE OF SUPPORT MODIFICATION ON HYDROGEN SPILLOVER IN ETHYLENE HYDROGENATION OVER PT/AL2O3 CATALYST

被引：0
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作者：
LU, GM
机构：
来源：
STUDIES IN SURFACE SCIENCE AND CATALYSIS | 1993年 / 77卷
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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：
Hydrogenation of ethylene over Pt/Al2O3 catalysts has been studied under steady-state reaction condition with a simplified dynamic model. Reaction of reversibly adsorbed ethylene on catalyst support with spillover hydrogen was found to contribute a large portion to the overall reaction. Modification of the support by diazomethane to remove surface hydroxyl groups diminished significantly the reaction on support surface. Competitive adsorption between ethylene and acetylene indicated that diazomethane modification eliminated the adsorptive sites on the interface of metal and support that might act as the bridge for spillover hydrogen.
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页码：293 / 296
页数：4
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