Alumina-based supports for automotive palladium catalysts

被引：10
|
作者：
Rashidzadeh, M
Peyrovi, MH
Mondegarian, R
机构：
[1] Natl Iranian Oil Co, Res Inst Petr Ind, Tehran, Iran
[2] Shahid Beheshti Univ, Dept Chem, Tehran, Iran
来源：
REACTION KINETICS AND CATALYSIS LETTERS | 2000年 / 69卷 / 01期
关键词：
Pd-based catalysts; TWC; exhaust gas;
D O I：
10.1023/A:1005605228566
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：
Addition of La, Ba and Cc to Pd 3-way exhaust catalysts has been studied. The effect of these additives and temperature of calcination were studied on the activity of the catalysts stabilized in a simulated exhaust gas at 570 degrees C (1 h), using an experimental design. The catalytic activities were measured in the simulated exhaust gas as a function of temperature. Also, the activity of the catalysts for the NO - CO - O-2 system, was measured while changing the oxygen content. The results show that La promotes the reduction of NO at temperatures below 250 degrees C. Improved catalysts have a high thermal stability.
引用
收藏
页码：115 / 122
页数：8
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