N2O decomposition over Fe/ZSM-5:: effect of high-temperature calcination and steaming

被引：92
|
作者：
Zhu, Q
Mojet, BL
Janssen, RAJ
Hensen, EJM
van Grondelle, J
Magusin, PCMM
van Santen, RA
机构：
[1] Eindhoven Univ Technol, Schuit Inst Catalysis, Inorgan Chem & Catalysis Lab, NL-5600 MB Eindhoven, Netherlands
[2] Eindhoven Univ Technol, Lab Macromol & Organ Chem, NL-5600 MB Eindhoven, Netherlands
来源：
CATALYSIS LETTERS | 2002年 / 81卷 / 3-4期
关键词：
Fe/ZSM-5; N2O decomposition; apparent activation energy; pre-exponential factor;
D O I：
10.1023/A:1016581107432
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：
N2O decomposition over Fe/ZSM-5 made by the sublimation method was investigated. Further calcination or steaming treatment (700degreesC) increased the decomposition rate of N2O. FTIR showed that such treatments lead to the disappearance of Bronsted acid sites. The various catalysts have different apparent activation energies, confirming the presence of different active Fe species. The observation that after high-temperature calcination a higher activity is obtained while no dealumination occurs indicates a mechanism where neutral Fe oxide clusters occluded in the zeolite micropores react at high temperature with the zeolite protons to form [FeO](+)-like species.
引用
收藏
页码：205 / 212
页数：8
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