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Effect of Substitution of Cobalt for Iron in Sr4Fe6O13−( on the Catalytic Activity for Methane Combustion

✍ Scribed by Shaojie Feng; Zhenghong Wang; Pinghua Yang

Publisher
John Wiley and Sons
Year
2011
Tongue
English
Weight
153 KB
Volume
29
Category
Article
ISSN
0256-7660

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✦ Synopsis

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.

Keywords heterogeneous catalysis, layered compounds, Sr 4 Fe 6-x Co x O 13-δ , methane www.cjc.wiley-vch. de

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