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

Shen, Q., Li, L., He, C., Tian, H., Hao, Z. and Xu, Z.P. (2009) A comprehensive investigation of influences of NO and O2 on N2O-SCR by CH4 over Fe-USY zeolite. Applied Catalysis B: Environmental, 91 1-2: 262-268. doi:10.1016/j.apcatb.2009.05.034


Author Shen, Q.
Li, L.
He, C.
Tian, H.
Hao, Z.
Xu, Z.P.
Title A comprehensive investigation of influences of NO and O2 on N2O-SCR by CH4 over Fe-USY zeolite
Journal name Applied Catalysis B: Environmental   Check publisher's open access policy
ISSN 0926-3373
Publication date 2009-09-07
Year available 2009
Sub-type Article (original research)
DOI 10.1016/j.apcatb.2009.05.034
Volume 91
Issue 1-2
Start page 262
End page 268
Total pages 7
Editor I S Nam
M Flytzani-Stephanopolous
X Veryklos
Place of publication Netherlands
Publisher Elsevier B. V.
Collection year 2010
Language eng
Subject C1
100708 Nanomaterials
970109 Expanding Knowledge in Engineering
Formatted 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.
© 2009 Elsevier B.V. All rights reserved.
Keyword Fe-USY zeolite
N2O–CH4 SCR
NO inhibition
NO-assisted N2O decomposition
N2O–CO SCR
Q-Index Code C1
Q-Index Status Confirmed Code

Document type: Journal Article
Sub-type: Article (original research)
Collections: 2010 Higher Education Research Data Collection
Australian Institute for Bioengineering and Nanotechnology Publications
 
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Created: Tue, 06 Apr 2010, 15:33:44 EST by Sharon Paterson on behalf of Aust Institute for Bioengineering & Nanotechnology