Influence of promoters on the performance of Au/MnOx and Pt/SnOx/SiO2 low-temperature CO oxidation catalysts

被引：20
|
作者：
Hoflund, GB [1 ]
Gardner, SD [1 ]
Schryer, DR [1 ]
Upchurch, BT [1 ]
Kielin, EJ [1 ]
机构：
[1] NASA, LANGLEY RES CTR, HAMPTON, VA 23665 USA
来源：
REACTION KINETICS AND CATALYSIS LETTERS | 1996年 / 58卷 / 01期
关键词：
low-temperature CO oxidation; promoters; platinized tin oxide; gold on manganese oxide;
D O I：
10.1007/BF02071100
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 influence of promoters on Pt/SnOx/SiO2 and Au/MnOx low-temperature CO oxidation catalysts has been investigated under stoichiometric reaction conditions with no CO2 added to the feed gas. The performance of Pt/SnOx/SiO2 catalysts is improved significantly by the addition of 1 wt.% Fe but reduced by the addition of 5 wt.% Fe, 1 wt.% Sb, 5 wt.% Sb, 1 wt.% As, 5 wt.% As and 1.8 wt.% P. The performance of Au/MnOx is improved significantly by the addition of 1 at.% Ce but reduced by the addition of 1 at.% Co. For the catalysts and conditions examined, the Au/MnOx catalysts are superior to the Pt/SnOx/SiO2 catalysts with respect to both activity and decay characteristics.
引用
收藏
页码：19 / 26
页数：8
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