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N2O decomposition over [Fe]-ZSM-5 and Fe-HZSM-5 zeolites

N2O decomposition over [Fe]-ZSM-5 and Fe-HZSM-5 zeolites The N2O decomposition over an [Fe]-ZSM-5 and an Fe-HZSM-5 zeolite was studied. We found that framework incorporated iron species were much more active than Fe(III) introduced as framework charge countercations by ion exchange (TOF at 0.1 vol% N2O:1.47 × 10−4 at 280°C for [Fe]-ZSM-5 vs. 2.58 × 10−4 at 468°C for Fe-HZSM-5). The higher activity of [Fe]-ZSM-5 was attributed to the uniqueness of framework iron species. Both [Fe]-ZSM-5 and Fe-HZSM-5 zeolites showed enhanced activity in the presence of excess oxygen. This is in sharp contrast to ruthenium exchanged zeolites which showed strong oxygen inhibiting effect on the rate of N2O decomposition. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Catalysis Letters Springer Journals

N2O decomposition over [Fe]-ZSM-5 and Fe-HZSM-5 zeolites

Catalysis Letters , Volume 34 (2) – Nov 28, 2004

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References (34)

Publisher
Springer Journals
Copyright
Copyright
Subject
Chemistry; Catalysis; Industrial Chemistry/Chemical Engineering; Organometallic Chemistry; Physical Chemistry
ISSN
1011-372X
eISSN
1572-879X
DOI
10.1007/BF00808332
Publisher site
See Article on Publisher Site

Abstract

The N2O decomposition over an [Fe]-ZSM-5 and an Fe-HZSM-5 zeolite was studied. We found that framework incorporated iron species were much more active than Fe(III) introduced as framework charge countercations by ion exchange (TOF at 0.1 vol% N2O:1.47 × 10−4 at 280°C for [Fe]-ZSM-5 vs. 2.58 × 10−4 at 468°C for Fe-HZSM-5). The higher activity of [Fe]-ZSM-5 was attributed to the uniqueness of framework iron species. Both [Fe]-ZSM-5 and Fe-HZSM-5 zeolites showed enhanced activity in the presence of excess oxygen. This is in sharp contrast to ruthenium exchanged zeolites which showed strong oxygen inhibiting effect on the rate of N2O decomposition.

Journal

Catalysis LettersSpringer Journals

Published: Nov 28, 2004

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