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

	Direct, Nonoxidative Conversion of Methane to Ethylene, Aromatics, and Hydrogen
	Guo, Xiaoguang 1; Fang, Guangzong 1; Li, Gang 2,3; Ma, Hao 1; Fan, Hongjun 2; Yu, Liang 1; Ma, Chao ; Wu, Xing 5; Deng, Dehui 1; Wei, Mingming 1
刊名	science
	2014-05-09
卷号	344 期号:6184 页码:616-619
英文摘要	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.
WOS标题词	science & technology
类目[WOS]	multidisciplinary sciences
研究领域[WOS]	science & technology - other topics
关键词[WOS]	lower olefins ; catalysts ; carbon ; benzene ; aromatization ; decomposition ; pyrolysis ; progress ; gas ; co
收录类别	SCI
语种	英语
WOS记录号	WOS:000335537400039
公开日期	2016-05-09
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/145594]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
作者单位	1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China 2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Peoples R China 3.Dalian Univ Technol, State Key Lab Fine Chem, Inst Coal Chem Engn, Sch Chem Engn, Dalian 116012, Peoples R China 4.Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Inst Phys, Beijing 100190, Peoples R China 5.Southeast Univ, Nanopico Ctr, Key Lab Microelectromech Syst MEMS, Minist Educ, Nanjing 210096, Jiangsu, Peoples R China 6.Chinese Acad Sci, Shanghai Synchrotron Radiat Facil, Shanghai Inst Appl Phys, Shanghai 201204, Peoples R China
推荐引用方式 GB/T 7714	Guo, Xiaoguang,Fang, Guangzong,Li, Gang,et al. Direct, Nonoxidative Conversion of Methane to Ethylene, Aromatics, and Hydrogen[J]. science,2014,344(6184):616-619.
APA	Guo, Xiaoguang.,Fang, Guangzong.,Li, Gang.,Ma, Hao.,Fan, Hongjun.,...&Bao, Xinhe.(2014).Direct, Nonoxidative Conversion of Methane to Ethylene, Aromatics, and Hydrogen.science,344(6184),616-619.
MLA	Guo, Xiaoguang,et al."Direct, Nonoxidative Conversion of Methane to Ethylene, Aromatics, and Hydrogen".science 344.6184(2014):616-619.