Transient reaction analysis and steady-state kinetic study of selective catalytic reduction of NO and NO+NO2 by NH3 over Fe/ZSM-5
1
TOYOTA Central R&D labs. Inc. 41-1 Yokomichi, Nagakute-cho, Aichi 480-1192, Japan
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Publication type: Journal Article
Publication date: 2009-09-01
scimago Q2
wos Q2
SJR: 1.000
CiteScore: 8.6
Impact factor: 4.8
ISSN: 0926860X, 18733875
Catalysis
Process Chemistry and Technology
Abstract
The reaction kinetics of selective catalytic reduction (SCR) by NH3 on NO (standard SCR) and on NO + NO2 (fast SCR) over Fe/ZSM-5 were investigated using transient and steady-state analyses. In the standard SCR, the N2 production rate was transiently promoted in the absence of gaseous NH3; this enhancement can be attributed to the negative reaction order of NH3 (between −0.21 and −0.11). The steady-state data for the standard SCR could be fit to a Langmuir–Hinshelwood-type reaction between NOad and Oad to form NO2. In the fast SCR, however, the promotion behavior in the absence of gaseous NH3 was not observed and the apparent NH3 order changed from positive to negative with NH3 concentration. The steady-state rate analysis combined with elementary reaction modeling suggested that competitive adsorption between NO2 and NH3 was occurring due to strong NO2 adsorption; this must be the main reason for the absence of the promotion effect.
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GOST
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Iwasaki M., Yamazaki K., Shinjoh H. Transient reaction analysis and steady-state kinetic study of selective catalytic reduction of NO and NO+NO2 by NH3 over Fe/ZSM-5 // Applied Catalysis A: General. 2009. Vol. 366. No. 1. pp. 84-92.
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Iwasaki M., Yamazaki K., Shinjoh H. Transient reaction analysis and steady-state kinetic study of selective catalytic reduction of NO and NO+NO2 by NH3 over Fe/ZSM-5 // Applied Catalysis A: General. 2009. Vol. 366. No. 1. pp. 84-92.
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RIS
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TY - JOUR
DO - 10.1016/j.apcata.2009.06.036
UR - https://doi.org/10.1016/j.apcata.2009.06.036
TI - Transient reaction analysis and steady-state kinetic study of selective catalytic reduction of NO and NO+NO2 by NH3 over Fe/ZSM-5
T2 - Applied Catalysis A: General
AU - Iwasaki, Masaoki
AU - Yamazaki, Kiyoshi
AU - Shinjoh, Hirofumi
PY - 2009
DA - 2009/09/01
PB - Elsevier
SP - 84-92
IS - 1
VL - 366
SN - 0926-860X
SN - 1873-3875
ER -
Cite this
BibTex (up to 50 authors)
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@article{2009_Iwasaki,
author = {Masaoki Iwasaki and Kiyoshi Yamazaki and Hirofumi Shinjoh},
title = {Transient reaction analysis and steady-state kinetic study of selective catalytic reduction of NO and NO+NO2 by NH3 over Fe/ZSM-5},
journal = {Applied Catalysis A: General},
year = {2009},
volume = {366},
publisher = {Elsevier},
month = {sep},
url = {https://doi.org/10.1016/j.apcata.2009.06.036},
number = {1},
pages = {84--92},
doi = {10.1016/j.apcata.2009.06.036}
}
Cite this
MLA
Copy
Iwasaki, Masaoki, et al. “Transient reaction analysis and steady-state kinetic study of selective catalytic reduction of NO and NO+NO2 by NH3 over Fe/ZSM-5.” Applied Catalysis A: General, vol. 366, no. 1, Sep. 2009, pp. 84-92. https://doi.org/10.1016/j.apcata.2009.06.036.