Methyl Radicals in Oxidative Coupling of Methane Directly Confirmed by Synchrotron VUV Photoionization Mass Spectroscopy
Gas-phase methyl radicals have been long proposed as the key intermediate in catalytic oxidative coupling of methane, but the direct experimental evidence still lacks. Here, employing synchrotron VUV photoionization mass spectroscopy, we have directly observed the formation of gas-phase methyl radic...
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| Veröffentlicht in: | Scientific reports 2013-04, Vol.3 (1), p.1625-1625, Article 1625 |
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| creator | Luo, Liangfeng Tang, Xiaofeng Wang, Wendong Wang, Yu Sun, Shaobo Qi, Fei Huang, Weixin |
| description | Gas-phase methyl radicals have been long proposed as the key intermediate in catalytic oxidative coupling of methane, but the direct experimental evidence still lacks. Here, employing synchrotron VUV photoionization mass spectroscopy, we have directly observed the formation of gas-phase methyl radicals during oxidative coupling of methane catalyzed by Li/MgO catalysts. The concentration of gas-phase methyl radicals correlates well with the yield of ethylene and ethane products. These results lead to an enhanced fundamental understanding of oxidative coupling of methane that will facilitate the exploration of new catalysts with improved performance. |
| doi_str_mv | 10.1038/srep01625 |
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Here, employing synchrotron VUV photoionization mass spectroscopy, we have directly observed the formation of gas-phase methyl radicals during oxidative coupling of methane catalyzed by Li/MgO catalysts. The concentration of gas-phase methyl radicals correlates well with the yield of ethylene and ethane products. 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| subjects | 639/638/11/296 639/638/542/971 639/638/77/885 639/638/77/887 Catalysts Ethane Ethylene Humanities and Social Sciences Mass spectroscopy Methane multidisciplinary Radicals Science Spectrum analysis |
| title | Methyl Radicals in Oxidative Coupling of Methane Directly Confirmed by Synchrotron VUV Photoionization Mass Spectroscopy |
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