Low temperature selective catalytic reduction of NOx by ammonia over H-ZSM-5:: an IR study

被引：45
|
作者：
Sanchez-Escribano, V
Montanari, T
Busca, G [1 ]
机构：
[1] Univ Genoa, Dipartimento Ingn Chim & Proc, I-16129 Genoa, Italy
[2] Univ Salamanca, Dept Quim Inorgan, E-37008 Salamanca, Spain
来源：
APPLIED CATALYSIS B-ENVIRONMENTAL | 2005年 / 58卷 / 1-2期
关键词：
catalytic reduction of NOx; IR study; H-ZSM-5; zeolite; low temperature ammonia SCR; SCR; nitrogen oxides;
D O I：
10.1016/j.apcatb.2004.11.015
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：
The IR study of the interaction of NO2 with ammonia-covered H-ZSM-5 zeolite shows a very fast reaction at room temperature between NO2 and adsorbed ammonium ions. An adsorbed NO2 species is also formed. In the presence of NO + NO2 mixture ammonium ions are completely rapidly decomposed at 300-373 K. These data suggest some speculations on the mechanism of the reduction of NOx by ammonia on H-ZSM-5 catalysts. (c) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码：19 / 23
页数：5
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