Fe-ZSM-5 for selective catalytic reduction of NO with NH3:: a comparative study of different preparation techniques

被引：119

作者：

Long, RQ ^{[1
]}

Yang, RT ^{[1
]}

机构：

[1] Univ Michigan, Dept Chem Engn, Ann Arbor, MI 48109 USA

来源：

CATALYSIS LETTERS | 2001年 / 74卷 / 3-4期

基金：

美国国家科学基金会;

关键词：

Fe-exchanged ZSM-5; selective catalytic reduction; SCR of NO with ammonia; ion-exchange; catalyst preparation;

D O I：

10.1023/A:1016670217673

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：

Fe-ZSM-5 are prepared by using four different techniques: conventional aqueous ion-exchange (CA), improved aqueous ion-exchange (IA), solid-state ion-exchange (SS) and chemical vapor ion-exchange (CV). All of the catalysts show very high activities for selective catalytic reduction (SCR) of NO with ammonia. However, the activities are different and follow the sequence of Fe-ZSM-5 (IA) > FeZSM-5 (CA), Fe-ZSM-5 (SS) > Fe-ZSM-5 (CV). ESR results indicate that Fe3+ ions with tetrahedral coordination are the active sites for the SCR reaction.

引用

页码：201 / 205

页数：5

共 19 条

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