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DOI | 10.1126/science.aam9147 |
Low-temperature activation of methane on the IrO2(110) surface | |
Liang, Zhu1; Li, Tao1; Kim, Minkyu2; Asthagiri, Aravind2; Weaver, Jason F.1 | |
2017-04-21 | |
发表期刊 | SCIENCE |
ISSN | 0036-8075 |
EISSN | 1095-9203 |
出版年 | 2017 |
卷号 | 356期号:6335页码:298-301 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Methane undergoes highly facile C-H bond cleavage on the stoichiometric IrO2(110) surface. From temperature-programmed reaction spectroscopy experiments, we found that methane molecularly adsorbed as a strongly bound sigma complex on IrO2(110) and that a large fraction of the adsorbed complexes underwent C-H bond cleavage at temperatures as low as 150 kelvin (K). The initial dissociation probability of methane on IrO2(110) decreased from 80 to 20% with increasing surface temperature from 175 to 300 K. We estimate that the activation energy for methane C-H bond cleavage is 9.5 kilojoule per mole (kJ/mol) lower than the binding energy of the adsorbed precursor on IrO2(110), and equal to a value of similar to 28.5 kJ/mol. Low-temperature activation may avoid unwanted side reactions in the development of catalytic processes to selectively convert methane to value-added products. |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000399540100057 |
WOS关键词 | MEDIATED DISSOCIATIVE CHEMISORPTION ; H BOND ACTIVATION ; ADSORPTION ; ALKANES ; PROPANE ; ETHANE |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/195854 |
专题 | 地球科学 资源环境科学 气候变化 |
作者单位 | 1.Univ Florida, Dept Chem Engn, Gainesville, FL 32611 USA; 2.Ohio State Univ, William G Lowrie Chem & Biomol Engn, Columbus, OH 43210 USA |
推荐引用方式 GB/T 7714 | Liang, Zhu,Li, Tao,Kim, Minkyu,et al. Low-temperature activation of methane on the IrO2(110) surface[J]. SCIENCE,2017,356(6335):298-301. |
APA | Liang, Zhu,Li, Tao,Kim, Minkyu,Asthagiri, Aravind,&Weaver, Jason F..(2017).Low-temperature activation of methane on the IrO2(110) surface.SCIENCE,356(6335),298-301. |
MLA | Liang, Zhu,et al."Low-temperature activation of methane on the IrO2(110) surface".SCIENCE 356.6335(2017):298-301. |
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