Knowledge Management System Of Shanghai Institute of Applied Physics, CAS
| 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; xhbao@dicp.ac.cn | |
| 2014 | |
| Source Publication | SCIENCE
 |
| ISSN | 0036-8075 |
| Volume | 344Issue:6184Pages:616—619 |
| Abstract | 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. |
| Keyword | Lower Olefins Catalysts Carbon Benzene Aromatization Decomposition Pyrolysis Progress Gas Co |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:000335537400039 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.sinap.ac.cn/handle/331007/14084 |
| Collection | 中科院上海应用物理研究所2011-2020年 |
| Corresponding Author | xhbao@dicp.ac.cn |
| Recommended Citation 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—619. |
| APA | Guo, XG.,Fang, GZ.,Li, G.,Ma, H.,Fan, HJ.,...&xhbao@dicp.ac.cn.(2014).Direct, Nonoxidative Conversion of Methane to Ethylene, Aromatics, and Hydrogen.SCIENCE,344(6184),616—619. |
| MLA | Guo, XG,et al."Direct, Nonoxidative Conversion of Methane to Ethylene, Aromatics, and Hydrogen".SCIENCE 344.6184(2014):616—619. |
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| Direct, Nonoxidative（1096KB） | 开放获取 | CC BY-NC-SA | View Download | |||
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