Structure of Ga2O3-Al2O3 prepared by sol–gel method and its catalytic performance for NO reduction by propene in the presence of oxygen

Catalytic performance of Ga2O3-Al2O3 prepared by sol–gel method for the selective reduction of NO with propene in the presence of oxygen was investigated. The activity of Ga2O3-Al2O3 increased with an increase in Ga2O3 loading up to 50wt.%, and then decreased after that. The same tendency was observ...

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Bibliographic Details
Published in:Applied catalysis. B, Environmental Environmental, 2001-05, Vol.31 (2), p.81-92
Main Authors: Haneda, Masaaki, Kintaichi, Yoshiaki, Mizushima, Takanori, Kakuta, Noriyoshi, Hamada, Hideaki
Format: Article
Language:English
Subjects:
Composite oxide
Fourier transform infrared (FT-IR) spectroscopy
Ga2O3-Al2O3
Nitrate species (NO3−)
Nitrogen monoxide
Propene
Selective reduction
Sol–gel method
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Summary:Catalytic performance of Ga2O3-Al2O3 prepared by sol–gel method for the selective reduction of NO with propene in the presence of oxygen was investigated. The activity of Ga2O3-Al2O3 increased with an increase in Ga2O3 loading up to 50wt.%, and then decreased after that. The same tendency was observed for the specific activity normalized by BET surface area. The possibility of a synergistic effect between Ga2O3 and Al2O3 was suggested. X-ray diffraction (XRD) and extended X-ray absorption fine structure (EXAFS) revealed that a composite oxide in the form of [GaxAl(1−x)]2O3 (x
ISSN:0926-3373
1873-3883
DOI:10.1016/S0926-3373(00)00271-X