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A comprehensive investigation of influences of NO and O2 on N2O-SCR by CH4 over Fe-USY zeolite

Paper ID Volume ID Publish Year Pages File Format Full-Text
47736 46481 2009 7 PDF Available
Title
A comprehensive investigation of influences of NO and O2 on N2O-SCR by CH4 over Fe-USY zeolite
Abstract

The catalytic reduction behaviors of N2O by CH4 have been investigated over Fe-USY catalyst by examining the influences of CH4, NO, O2, or their mixtures in detail. The observations show that NO and O2, which inevitably exist in the gases emitted from industrial sources, such as the nitric acid plant, inhibit the selective catalytic reduction of N2O by CH4 (N2O–CH4 SCR) to some degree, shifting the temperature for >90% N2O conversion to over 450 °C. The prohibition of O2 can be ascribed to its occupying active sites and oxidizing CH4-derived intermediates. The negative effect of NO is very prominent, inhibiting the N2O conversion by strongly occupying the active sites and gradually moving the reaction pathways from N2O–CH4 SCR to NO-assisted N2O decomposition, where the former is more efficient than the latter for N2O decomposition under the same operation conditions. In addition, the amount of reducing agent CH4 has also influenced the N2O conversion profile.

Keywords
Fe-USY zeolite; N2O–CH4 SCR; NO inhibition; NO-assisted N2O decomposition; N2O–CO SCR
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A comprehensive investigation of influences of NO and O2 on N2O-SCR by CH4 over Fe-USY zeolite
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 91, Issues 1–2, 7 September 2009, Pages 262–268
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us