Preparation of alumina supported palladium-platinum catalysts by surface redox reactions. Activity for complete hydrocarbon oxidation

被引：47
作者：
Micheaud, C [1 ]
Marecot, P [1 ]
Guerin, M [1 ]
Barbier, J [1 ]
机构：
[1] Univ Poitiers, Catalyse Chim Organ Lab, CNRS, UMR 6503, F-86022 Poitiers, France
来源：
APPLIED CATALYSIS A-GENERAL | 1998年 / 171卷 / 02期
关键词：
bimetallic catalysts; palladium; platinum; complete oxidation; methane; propane; propene; ageing;
D O I：
10.1016/S0926-860X(98)00093-3
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 complete oxidation of hydrocarbons (methane, propane and propene) and the O-18/O-16 isotopic exchange were investigated on supported palladium-platinum catalysts. The bimetallic catalysts were prepared by controlled surface reactions (the "refilling" RC and the "direct redox reaction" RD) and by coimpregnation CI. The preparation methods lead to different kinds of platinum deposit, which involve different behaviours in hydrocarbon oxidation and in isotopic exchange. Even if the structure of bimetallic catalysts is modified under oxygen, the results show that the bimetallic catalysts keep a memory effect of their preparation method under the reaction conditions used in this work. (C) 1998 Elsevier Science B.V. All rights reserved.
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页码：229 / 239
页数：11
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