Zeolite-supported precious metal catalysts for NOx reduction in lean burn engine exhaust

被引：30

作者：

Takami, A

Takemoto, T

Iwakuni, H

Yamada, K

Shigetsu, M

Komatsu, K

机构：

[1] Technical Research Center, Mazda Motor Corporation, Akigun, Hiroshima, 730-91, 3-1 Shinchi, Fuchu-cho

来源：

CATALYSIS TODAY | 1997年 / 35卷 / 1-2期

关键词：

lean burn engine; zeolite; precious metal; lean NOx catalyst;

D O I：

10.1016/S0920-5861(96)00145-9

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

The effects of the zeolite-supported precious metal catalysts on NOx reduction in oxygen-rich exhaust have been investigated. It became clear that NOx conversion related the number of NO adsorption sites of precious metal and the number of HC (C3H6) adsorption of support (zeolite). Pt-Ir-Rh/MFI zeolite catalyst showed higher performance and durability than the current Pt-Rh supported on alumina and ceria catalyst.

引用

页码：75 / 81

页数：7