Low-temperature CO oxidation over platinum and cobalt oxide catalysts

被引：231
|
作者：
Thormählen, P
Skoglundh, M
Fridell, E
Andersson, B
机构：
[1] Chalmers Univ Technol, Competence Ctr Catalysis, SE-41296 Gothenburg, Sweden
[2] Chalmers Univ Technol, Dept Chem React Engn, SE-41296 Gothenburg, Sweden
[3] Chalmers Univ Technol, Dept Appl Phys, SE-41296 Gothenburg, Sweden
来源：
JOURNAL OF CATALYSIS | 1999年 / 188卷 / 02期
关键词：
catalytic oxidation of carbon monoxide; low temperature activity; platinum; cobalt oxide; catalyst pretreatment; temperature programmed desorption; temperature programmed oxidation; temperature programmed reduction; temperature programmed reaction;
D O I：
10.1006/jcat.1999.2665
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 low-temperature CO oxidation activity of three monolith catalysts (Pt/Al2O3, CoOx/Al2O3, and Pt/CoOx/Al2O3) has been studied. The catalytic properties of the catalysts were investigated by using different temperature-programmed methods: CO-TPD (desorption), TPO (oxidation), TPR (reduction), TPReaction, and CO light-off. Preoxidized cobalt-oxide-containing catalysts were found to be highly active for CO oxidation at temperatures as low as 200 K,and at these low temperatures the activity is independent of the presence of platinum. The catalytic properties and how they relate to the surface reaction kinetics are discussed. (C) 1999 Academic Press.
引用
收藏
页码：300 / 310
页数：11
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