Selective catalytic reduction of NO with methane on γ-Ga2O3-Al2O3 solid solutions prepared by the glycothermal method

The γ-Ga2O3-Al2O3 solid solutions prepared by the glycothermal reaction of the mixtures of aluminum isopropoxide and gallium acetylacetonate had extremely high activities for selective catalytic reduction of NO with methane as a reducing agent (CH4-SCR). With the increase in the Al content incorpora...

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Bibliographic Details
Published in:Applied catalysis. B, Environmental Environmental, 2006-05, Vol.65 (1-2), p.142-149
Main Authors: Takahashi, Masaru, Inoue, Noriyuki, Nakatani, Tetsu, Takeguchi, Tatsuya, Iwamoto, Shinji, Watanabe, Tsunenori, Inoue, Masashi
Format: Article
Language:English
Subjects:
Catalysis
CH4
Chemistry
Exact sciences and technology
General and physical chemistry
Glycothermal method
Selective catalytic reduction
Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry
γ-Ga2O3-Al2O3 solid solution
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Summary:The γ-Ga2O3-Al2O3 solid solutions prepared by the glycothermal reaction of the mixtures of aluminum isopropoxide and gallium acetylacetonate had extremely high activities for selective catalytic reduction of NO with methane as a reducing agent (CH4-SCR). With the increase in the Al content incorporated in the spinel structure, the catalytic activity increased. The active sites for this reaction were concluded to be the tetrahedral Ga ions with octahedral Al ions in the next-nearest-neighbor sites. Methane activation on the catalysts was the key-step of CH4-SCR. The solid-solution catalysts showed high durability under steaming conditions.
ISSN:0926-3373
1873-3883
DOI:10.1016/j.apcatb.2006.01.007