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Direct, Nonoxidative Conversion of Methane to Ethylene, Aromatics, and Hydrogen
Guo, Xiaoguang1; Fang, Guangzong1; Li, Gang2,3; Ma, Hao1; Fan, Hongjun2; Yu, Liang1; Ma, Chao; Wu, Xing5; Deng, Dehui1; Wei, Mingming1; Tan, Dali1; Si, Rui6; Zhang, Shuo6; Li, Jianqi4; Sun, Litao5; Tang, Zichao2; Pan, Xiulian1; Bao, Xinhe1
Source PublicationSCIENCE
2014-05-09
DOI10.1126/science.1253150
Volume344Issue:6184Pages:616-619
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology
WOS SubjectMultidisciplinary Sciences
WOS Research AreaScience & Technology - Other Topics
WOS KeywordLOWER OLEFINS ; CATALYSTS ; CARBON ; BENZENE ; AROMATIZATION ; DECOMPOSITION ; PYROLYSIS ; PROGRESS ; GAS ; CO
AbstractThe 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.
Language英语
WOS IDWOS:000335537400039
Citation statistics
Cited Times:407[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/145594
Collection中国科学院大连化学物理研究所
Affiliation1.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
Recommended Citation
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.
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