Recent advances in automobile exhaust catalysts

被引：345

作者：

Matsumoto, SI ^{[1
]}

机构：

[1] Toyota Motor Co Ltd, Mat Engn Div 1, Aichi 4718572, Japan

来源：

CATALYSIS TODAY | 2004年 / 90卷 / 3-4期

关键词：

oxygen storage capacity; three-way catalyst; NO(x) storage-reduction catalyst; sulfur poisoning; steam reforming; hexagonal cell;

D O I：

10.1016/j.cattod.2004.04.048

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Catalysts, which were recently developed by Toyota for the control of automobile exhaust, are reviewed. (1) For use in low emission vehicles, a CeO(2)-ZrO(2) solid solution (CZ) with both high oxygen storage capacity and high heat resistance was developed as a support for a high performance three-way catalyst (TWC). (2) A novel three-way catalyst named the NO(x) storage-reduction catalyst (NSR) was developed for automotive lean-burn engines. The NSR catalyst can store NO(x) in an oxidizing atmosphere and then reduce stored NO(x) at stoichiometric or reducing conditions. Also, it has high tolerance to sulfur poisoning which is the most stringent problem for the NSR catalyst. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：183 / 190

页数：8

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