Combustion of methane over supported palladium-copper bimetallic catalysts

被引：7
|
作者：
Beguin, B [1 ]
Garbowski, E [1 ]
Peter, SD [1 ]
Primet, M [1 ]
机构：
[1] UNIV LYON 1,UMR CNRS 5634,LAB APPLICAT CHIM ENVIRONM,F-69622 VILLEURBANNE,FRANCE
来源：
REACTION KINETICS AND CATALYSIS LETTERS | 1996年 / 59卷 / 02期
关键词：
catalytic combustion; methane; palladium; copper oxide;
D O I：
10.1007/BF02068121
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：
Monometallic and bimetallic catalysts based on palladium and copper deposited on a spinel carrier have been investigated in the catalytic combustion of methane. Great differences were found in catalytic activity, according to the sequence Pd/MgAl2O4 > CuO-Pd/MgAl2O4 > Pd-CuO/MgAl2O4 > CuO/MgAl2O4. They were explained by changes in surface composition of the catalysts. In the case of bimetallic catalysts the metallic surface is preferentially enriched in copper, which acts as a diluting agent for the Pd atom ensembles. As a consequence, the adsorption of reactants is limited and the catalysts so obtained behave like copper slightly doped with palladium.
引用
收藏
页码：253 / 262
页数：10
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