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	Copper grafted on SBA-15 as efficient catalyst for the selective oxidation of methane by oxygen
	An, Dongli ; An DL(安冬丽) ; Zhang, Qinghong ; Zhang QH(张庆红) ; Wang, Ye ; Wang Y(王野)
	2010-11
关键词	Methane Selective oxidation Oxygen Formaldehyde Copper catalyst Grafting method
英文摘要	CuOx/SBA-15 catalysts prepared by a grafting approach (denoted as CuOx/SBA-15-gra) have been characterized and studied for the selective oxidation of methane to formaldehyde by oxygen Our characterizations using XRD H-2-TPR UV-vis and ESR suggest that Cu2+ ions are almost isolated on the surface of SBA-15 at a Cu content <= 0 6 wt% The increase in the Cu content to >06 wt% decreased the fraction of isolated Cu2+ ions and increased that of aggregated CuOx clusters On the other hand the fraction of isolated Cu2+ ions was much smaller in the CuOx/SBA-15 catalyst prepared by the impregnation method (denoted as CuOx/SBA-15-imp) even with a lower Cu content (0 5 wt%) The CuOx/SBA-15-gra provided significantly higher HCHO selectivity in the selective oxidation of CH4 than the CuOx/SBA-15-imp and the CuOx/SBA-15-gra catalyst with a Cu content of 0 6 wt% showed the best performance for HCHO formation In situ FT-IR spectroscopy of adsorbed CO and XPS measurements suggest the generation of Cu+ after the reaction and the Cu+ site is likely responsible for the activation of oxygen forming an active oxygen species for the selective oxidation of CH4 to HCHO (C) 2010 Elsevier B V All rights reserved
语种	英语
出版者	ELSEVIER SCIENCE BV
内容类型	期刊论文
源URL	[http://dx.doi.org/doi:10.1016/j.cattod.2010.01.048]
专题	化学化工－已发表论文
推荐引用方式 GB/T 7714	An, Dongli,An DL,Zhang, Qinghong,et al. Copper grafted on SBA-15 as efficient catalyst for the selective oxidation of methane by oxygen[J],2010.
APA	An, Dongli,安冬丽,Zhang, Qinghong,张庆红,Wang, Ye,&王野.(2010).Copper grafted on SBA-15 as efficient catalyst for the selective oxidation of methane by oxygen..
MLA	An, Dongli,et al."Copper grafted on SBA-15 as efficient catalyst for the selective oxidation of methane by oxygen".(2010).

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