NOx storage-reduction three-way catalyst with improved sulfur tolerance

被引：64

作者：

Hirata, H

Hachisuka, I

Ikeda, Y

Tsuji, S

Matsumoto, S

机构：

[1] Toyota Motor Co Ltd, Mat Engn Div 3, Shizuoka 4101193, Japan

[2] Toyota Motor Co Ltd, Mat Engn Div 1, Aichi 4718571, Japan

来源：

TOPICS IN CATALYSIS | 2001年 / 16卷 / 1-4期

关键词：

lean-burn engines; NOx storage; NOx reduction; sulfur poisoning;

D O I：

10.1023/A:1016603502952

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

The NOx storage-reduction catalyst (NSR catalyst) is poisoned by SO2 caused by fuel sulfur, thus its activity is reduced. In order to improve the NSR catalyst, the sulfur poisoning phenomenon has been analyzed. Based on this result, we developed TiO2 and Rh/ZrO2 to promote the sulfur desorption. The developed catalyst has made remarkable progress in its sulfur tolerance, about 50% improvement in NOx purification performance compared with the conventional one.

引用

页码：145 / 149

页数：5