Remarkable effect of addition of In and Pb on the reduction of N2O by CO over SiO2 supported Pd catalysts
Publication type: Journal Article
Publication date: 2007-04-20
scimago Q2
wos Q3
SJR: 0.539
CiteScore: 4.9
Impact factor: 2.4
ISSN: 1011372X, 1572879X
General Chemistry
Catalysis
Abstract
The effect of addition of In and Pb on the reduction of N2O by CO was studied over SiO2 supported Pd catalysts, using a closed gas circulation system as well as in-situ infrared spectroscopy. Formation of intermetallic compounds such as Pd0.48In0.52, Pd3Pb and Pd3Pb2 was observed which caused a drastic enhancement of the rate of N2 formation. The infrared spectroscopic analyses revealed a weakening of the adsorption strength of CO on Pd metal by the formation of intermetallic compounds, which is likely the main reason for the enhancement of the reaction rate. From a kinetic investigation as well as in situ FT-IR observation during the N2O-CO reaction, a redox mechanism was proposed involving the oxidation of the surface by N2O followed by its reduction by CO. Over Pd/SiO2, the former process seems to be the rate limiting step because of the inhibition of N2O activation by strongly adsorbed CO. By adding In or Pb, the rate limiting step shifted to the latter process, which resulted in a large enhancement in the rate of N2 formation.
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Hirano T. et al. Remarkable effect of addition of In and Pb on the reduction of N2O by CO over SiO2 supported Pd catalysts // Catalysis Letters. 2007. Vol. 117. No. 1-2. pp. 73-78.
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Hirano T., Kazahaya Y., NAKAMURA A., Miyao T., Naito S. Remarkable effect of addition of In and Pb on the reduction of N2O by CO over SiO2 supported Pd catalysts // Catalysis Letters. 2007. Vol. 117. No. 1-2. pp. 73-78.
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RIS
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TY - JOUR
DO - 10.1007/s10562-007-9109-6
UR - https://doi.org/10.1007/s10562-007-9109-6
TI - Remarkable effect of addition of In and Pb on the reduction of N2O by CO over SiO2 supported Pd catalysts
T2 - Catalysis Letters
AU - Hirano, Takashi
AU - Kazahaya, Yuiko
AU - NAKAMURA, AKIO
AU - Miyao, Toshihiro
AU - Naito, Shuichi
PY - 2007
DA - 2007/04/20
PB - Springer Nature
SP - 73-78
IS - 1-2
VL - 117
SN - 1011-372X
SN - 1572-879X
ER -
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BibTex (up to 50 authors)
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@article{2007_Hirano,
author = {Takashi Hirano and Yuiko Kazahaya and AKIO NAKAMURA and Toshihiro Miyao and Shuichi Naito},
title = {Remarkable effect of addition of In and Pb on the reduction of N2O by CO over SiO2 supported Pd catalysts},
journal = {Catalysis Letters},
year = {2007},
volume = {117},
publisher = {Springer Nature},
month = {apr},
url = {https://doi.org/10.1007/s10562-007-9109-6},
number = {1-2},
pages = {73--78},
doi = {10.1007/s10562-007-9109-6}
}
Cite this
MLA
Copy
Hirano, Takashi, et al. “Remarkable effect of addition of In and Pb on the reduction of N2O by CO over SiO2 supported Pd catalysts.” Catalysis Letters, vol. 117, no. 1-2, Apr. 2007, pp. 73-78. https://doi.org/10.1007/s10562-007-9109-6.