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
收藏
页码：2096 / 2099
页数：4
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