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

被引：46

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

页码：19 / 23

页数：5

共 23 条

[11] FOURIER TRANSFORM-INFRARED STUDY OF THE ADSORPTION AND COADSORPTION OF NITRIC-OXIDE, NITROGEN-DIOXIDE AND AMMONIA ON VANADIA TITANIA AND MECHANISM OF SELECTIVE CATALYTIC REDUCTION [J].