NO reduction by CO over automotive exhaust gas catalysts in the presence of O2

被引：31

作者：

Harmsen, JMA ^{[1
]}

Hoebink, JHBJ ^{[1
]}

Schouten, JC ^{[1
]}

机构：

[1] Eindhoven Univ Technol, Schuit Inst Catalysis, Lab Chem Reactor Engn, NL-5600 MB Eindhoven, Netherlands

来源：

CATALYSIS LETTERS | 2001年 / 71卷 / 1-2期

关键词：

NO reduction; automotive exhaust; platinum; rhodium; ceria; lean; elementary steps; modelling;

D O I：

10.1023/A:1016660509636

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 reduction of NO by CO in absence and presence of O-2 has been investigated by transient experiments at automotive cold-start conditions over Pt/Rh/CeO2/gamma -Al2O3, and derived model catalysts. A high-resolution magnetic sector mass spectrometer was used for distinguishing CO/N-2 and CO2/N2O. Mechanistic comparisons are made between the catalyst formulations. A kinetic scheme of elementary reaction steps is proposed, which highlights the various contributions of the catalyst constituents.

引用

页码：81 / 90

页数：10

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