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Effect of Substitution of Cobalt for Iron in Sr 4 Fe 6 O 13− ( on the Catalytic Activity for Methane Combustion
Author(s) -
Feng Shaojie,
Wang Zhenghong,
Yang Pinghua
Publication year - 2011
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.201190103
Subject(s) - chemistry , cobalt , catalysis , methane , catalytic combustion , combustion , x ray photoelectron spectroscopy , perovskite (structure) , inorganic chemistry , cobalt oxide , oxygen , oxide , anaerobic oxidation of methane , chemical engineering , crystallography , organic chemistry , engineering
A series of mixed oxides Sr 4 Fe 6− x Co x O 13− δ ( x =0, 1, 2, 3, or 4) were prepared by sol‐gel method and used for catalytic combustion of methane. The structural properties of oxides were characterized by XRD, TGA, and XPS. The layered intergrowth perovskite‐like oxide Sr 4 Fe 5 CoO 13− δ exhibits the highest catalytic activity for methane combustion under the experimental conditions. The enhanced catalytic activity of Sr 4 Fe 5 CoO 13− δ for methane combustion could be attributed to the increased amount of oxygen vacancy caused by the partial substitution of cobalt for iron in the Sr 4 Fe 6 O 13 , which was confirmed by TGA and XPS.