Combustion of methane over supported palladium-copper bimetallic catalysts

被引：6

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

页码：253 / 262

页数：10

共 19 条

[1] CATALYTIC COMBUSTION OF METHANE OVER SUPPORTED PALLADIUM CATALYSTS .1. ALUMINA SUPPORTED CATALYSTS [J].

BALDWIN, TR ;

BURCH, R .

APPLIED CATALYSIS, 1990, 66 (02) :337-358

[2] CATALYTIC-OXIDATION OF METHANE OVER PALLADIUM SUPPORTED ON ALUMINA - EFFECT OF AGING UNDER REACTANTS [J].

BRIOT, P ;

PRIMET, M .

APPLIED CATALYSIS, 1991, 68 (1-2) :301-314

[3]

BUDNIBOW PP, 1968, PRINCIPLES SOLID STA, P312

[4] ELECTRONIC EFFECT OF SUPPORTS ON COPPER-CATALYSTS [J].

CHEN, HW ;

WHITE, JM ;

EKERDT, JG .

JOURNAL OF CATALYSIS, 1986, 99 (02) :293-303

[5]

GARBOWSKI E, 1992, APPL CATAL A-GEN, V87, P129

[6]

GOLODETS GI, 1983, STUDIES SURF SCI CAT, V15, P470

[7]

LEON Y LEON CA, 1991, APPL CATAL, V69, P305

[8] CATALYTIC PROPERTIES OF COPPER-OXIDE SUPPORTED ON ZINC ALUMINATE IN METHANE COMBUSTION [J].

MARION, MC ;

GARBOWSKI, E ;

PRIMET, M .

JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS, 1991, 87 (11) :1795-1800

[9] PHYSICOCHEMICAL PROPERTIES OF COPPER-OXIDE LOADED ALUMINA IN METHANE COMBUSTION [J].

MARION, MC ;

GARBOWSKI, E ;

PRIMET, M .

JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS, 1990, 86 (17) :3027-3032

[10]

MATSUDA S, 1984, 8TH INT C CAT P BERL, V4, P879

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