Novel promoting effect Of SO2 on the selective catalytic reduction of NOx by ammonia over CO3O4 catalyst

被引：57

作者：

Ke, Rul ^{[1
]}

Li, Junhua ^{[1
]}

Liang, Xi ^{[1
]}

Hao, Jiming ^{[1
]}

机构：

[1] Tsing Hua Univ, Dept Environm Sci & Technol, Beijing 100084, Peoples R China

来源：

CATALYSIS COMMUNICATIONS | 2007年 / 8卷 / 12期

基金：

中国国家自然科学基金;

关键词：

CO3O4; selective catalytic reduction; ammonia; SO2; resistance; cobalt sulfate;

D O I：

10.1016/j.catcom.2007.03.033

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：

Spinel nano-Co3O4 was prepared by solid-state reaction at room temperature and investigated for selective catalytic reduction of NOx by NH3 (NH3-SCR). Although suffering from pore filling and plugging, treatment of this catalyst by SO2 showed novel promoting effect on NH3-SCR above 250 degrees C. Bulk cobalt sulfate was observed over the sulfated Co3O4 with XRD, which would be an active component for NH3-SCR. The sulphated Co3O4 catalyst exhibited good resistance to SO2 (500 ppm, 100 ppm) and 10% H2O at a space velocity of about 25000 h(-1) at 300 degrees C, as tested for 12 h. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：2096 / 2099

页数：4

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