Low temperature selective catalytic reduction of NOx with NH3 over amorphous MnOx catalysts prepared by three methods

被引：262
|
作者：
Tang, Xiaolong
Hao, Jiming [1 ]
Xu, Wenguo
Li, Junhua
机构：
[1] Tsinghua Univ, Dept Environm Sci & Engn, Beijing 100084, Peoples R China
[2] Beijing Inst Technol, Inst Phys Chem, Beijing 100081, Peoples R China
来源：
CATALYSIS COMMUNICATIONS | 2007年 / 8卷 / 03期
基金：
中国国家自然科学基金;
关键词：
selective catalytic reduction; low temperature; NO; ammonia; MnOx;
D O I：
10.1016/j.catcom.2006.06.025
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：
Unsupported manganese oxide catalysts with amorphous phase were prepared by three methods, and their activities for SCR of NO, with ammonia were investigated in the presence of O-2. The results showed the catalysts have superior low temperature activity, and the NO, conversion is about 98% at 80 degrees C, and nearly 100% NOx conversion between 100 and 150 degrees C. Due to competing adsorption with the reactant, H2O has slight impact on the activity. The activity was suppressed with coexisting of SO2, however the deactivation of SO2 is reversible. The excellent low temperature catalytic activity of amorphous MnOx catalysts is mainly due to their amorphous phase and high specific areas. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码：329 / 334
页数：6
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