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

被引：21

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

页码：19 / 26

页数：8