Effect of Novel Supporter on Catalytic Combustion of Methane
来源期刊：JOURNAL OF RARE EARTHS2006年第4期
论文作者：Zheng Xiaoming Chen Min Fan Liping
Key words：Ce-Mg-O,supporter; catalyst; methane combustion; rare earths;
Abstract: A new catalyst support, Ce-Mg-O, was prepared in a novel way macromolecule surfactant modified method and was used as a catalyst support for low-temperature methane combustion. The results indicate that the new type of FeOx/Ce-Mg-O catalyst exhibits high activity in low-temperature methane combustion, such that the T90 at which 90% conversion of methane occurs can be obtained at 560 ℃. The structure of the catalyst and the effect of the supporter on catalytic activity were characterized by transmission electronic microscopy (TEM), X-ray diffraction (XRD), and temperature-programmed reduction (TPR). The results indicate that the high catalytic activity of FeOx/Ce-Mg-O over methane combustion is strongly dependent on the particle size, typical crystal phase of the Ce-Mg-O, and the interaction of FeOx and Ce-Mg-O.
Zheng Xiaoming1，Chen Min1，Fan Liping1
(1.Department of Chemistry, Xixi Campus of Zhejiang University, Hangzhou 310028, China)
Abstract:A new catalyst support, Ce-Mg-O, was prepared in a novel way macromolecule surfactant modified method and was used as a catalyst support for low-temperature methane combustion. The results indicate that the new type of FeOx/Ce-Mg-O catalyst exhibits high activity in low-temperature methane combustion, such that the T90 at which 90% conversion of methane occurs can be obtained at 560 ℃. The structure of the catalyst and the effect of the supporter on catalytic activity were characterized by transmission electronic microscopy (TEM), X-ray diffraction (XRD), and temperature-programmed reduction (TPR). The results indicate that the high catalytic activity of FeOx/Ce-Mg-O over methane combustion is strongly dependent on the particle size, typical crystal phase of the Ce-Mg-O, and the interaction of FeOx and Ce-Mg-O.
Key words:Ce-Mg-O,supporter; catalyst; methane combustion; rare earths;
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