The room temperature, stoichiometric conversion of N2O to adsorbed NO by Fe-MCM-41 and Fe-ZSM-5

被引：50

作者：

Grubert, G

Hudson, MJ

Joyner, RW

Stockenhuber, M

机构：

[1] Nottingham Trent Univ, Dept Chem & Phys, Catalysis Res Lab, Nottingham NG11 8NS, England

[2] Univ Reading, Dept Chem, Reading RG6 2AD, Berks, England

来源：

JOURNAL OF CATALYSIS | 2000年 / 196卷 / 01期

基金：

英国工程与自然科学研究理事会;

关键词：

nitrous oxide (N2O); conversion to nitric oxide NO); MCM-41; Fe-ZSM-5; iron;

D O I：

10.1006/jcat.2000.3005

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：

Nitrous oxide(N2O) interacts at room temperature and low pressure (> 10(-5) mbar) with Fe(II) species in both Fe-MCM-41 and Fe-ZSM-5, to form adsorbed nitric oxide. The adsorbed product is identified by its characteristic but different N=O stretching frequencies on these two materials, and also by chemiluminescent analysis after desorption at T>420 K. It is proposed that the other product of N2O decomposition is nitrogen. This decomposition is thermodynamically favourable, due not least to the heat of adsorption of the adsorbed NO formed. Catalytic N2O decomposition, forming nitrogen and oxygen, does not occur until T>770 K, probably by a different mechanism. (C) 2000 Academic Press.

引用

页码：126 / 133

页数：8

共 21 条

[1] CATALYTIC DECOMPOSITION OF NITROUS-OXIDE ON TRANSITION-METAL EXCHANGED SODIUM-A ZEOLITES [J].