Direct, Nonoxidative Conversion of Methane to Ethylene, Aromatics, and Hydrogen

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	Direct, Nonoxidative Conversion of Methane to Ethylene, Aromatics, and Hydrogen
	Guo, XG ; Fang, GZ ; Li, G ; Ma, H ; Fan, HJ ; Yu, L ; Ma, C ; Wu, X ; Deng, DH ; Wei, MM ; Tan, DL ; Si, R ; Zhang, S ; Li, JQ ; Sun, LT ; Tang, ZC ; Pan, XL ; Bao, XH
刊名	SCIENCE
	2014
卷号	344 期号:6184 页码:616
ISSN号	0036-8075
通讯作者	Bao, XH (reprint author), Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China.
中文摘要	The efficient use of natural gas will require catalysts that can activate the first C-H bond of methane while suppressing complete dehydrogenation and avoiding overoxidation. We report that single iron sites embedded in a silica matrix enable direct, nonoxidative conversion of methane, exclusively to ethylene and aromatics. The reaction is initiated by catalytic generation of methyl radicals, followed by a series of gas-phase reactions. The absence of adjacent iron sites prevents catalytic C-C coupling, further oligomerization, and hence, coke deposition. At 1363 kelvin, methane conversion reached a maximum at 48.1% and ethylene selectivity peaked at 48.4%, whereas the total hydrocarbon selectivity exceeded 99%, representing an atom-economical transformation process of methane. The lattice-confined single iron sites delivered stable performance, with no deactivation observed during a 60-hour test.
资助信息	Strategic Priority Research Program of the Chinese Academy of Sciences [XDA09030101]; National Natural Science Foundation of China [21321002, 11079005, 21033009, 21103181]; Ministry of Science and Technology of China [2011CBA00503, 2013CB933100]
语种	英语
公开日期	2015-04-14
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/59658]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Guo, XG,Fang, GZ,Li, G,et al. Direct, Nonoxidative Conversion of Methane to Ethylene, Aromatics, and Hydrogen[J]. SCIENCE,2014,344(6184):616.
APA	Guo, XG.,Fang, GZ.,Li, G.,Ma, H.,Fan, HJ.,...&Bao, XH.(2014).Direct, Nonoxidative Conversion of Methane to Ethylene, Aromatics, and Hydrogen.SCIENCE,344(6184),616.
MLA	Guo, XG,et al."Direct, Nonoxidative Conversion of Methane to Ethylene, Aromatics, and Hydrogen".SCIENCE 344.6184(2014):616.