A molten carbonate shell modified perovskite redox catalyst for anaerobic oxidative dehydrogenation of ethane
文献类型：期刊论文
| 作者 | Gao, Yunfei3; Wang, Xijun3; Liu, Junchen3; Huang, Chuande2; Zhao, Kun1 ; Zhao, Zengli1; Wang, Xiaodong2; Li, Fanxing3
|
| 刊名 | SCIENCE ADVANCES
 |
| 出版日期 | 2020-04-01 |
| 卷号 | 6期号:17页码:10 |
| ISSN号 | 2375-2548 |
| DOI | 10.1126/sciadv.aaz9339 |
| 通讯作者 | Li, Fanxing(fli5@ncsu.edu) |
| 英文摘要 | Acceptor-doped, redox-active perovskite oxides such as La0.8Sr0.2FeO3 (LSF) are active for ethane oxidation to CO X but show poor selectivity to ethylene. This article reports molten Li2CO3 as an effective "promoter" to modify LSF for chemical looping-oxidative dehydrogenation (CL-ODH) of ethane. Under the working state, the redox catalyst is composed of a molten Li2CO3 layer covering the solid LSF substrate. The molten layer facilitates the transport of active peroxide (O-2(2-)) species formed on LSF while blocking the nonselective sites. Spectroscopy measurements and density functional theory calculations indicate that Fe4+ -> Fe3+ transition is responsible for the peroxide formation, which results in both exothermic ODH and air reoxidation steps. With >90% ethylene selectivity, up to 59% ethylene yield, and favorable heat of reactions, the core-shell redox catalyst has an excellent potential to be effective for intensified ethane conversion. The mechanistic findings also provide a generalized approach for designing CL-ODH redox catalysts. |
| WOS关键词 | INTENSIFIED ETHYLENE PRODUCTION ; LATTICE OXYGEN ; METAL-OXIDES ; PROMOTERS ; SURFACE ; SYSTEM ; PHASE |
| 资助项目 | U.S. NSF[CBET-1604605] ; DOE-RAPID Institute[DE-EE007888-05-6] ; Kenan Institute for Engineering, Technology and Science at the NC State University |
| WOS研究方向 | Science & Technology - Other Topics |
| 语种 | 英语 |
| WOS记录号 | WOS:000530628100041 |
| 出版者 | AMER ASSOC ADVANCEMENT SCIENCE |
| 资助机构 | U.S. NSF ; DOE-RAPID Institute ; Kenan Institute for Engineering, Technology and Science at the NC State University |
| 源URL | [http://ir.giec.ac.cn/handle/344007/26950]  |
| 专题 | 中国科学院广州能源研究所 |
| 通讯作者 | Li, Fanxing |
| 作者单位 | 1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou, Peoples R China 2.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian, Peoples R China 3.North Carolina State Univ, Campus Box 7905, Raleigh, NC 27695 USA |
| 推荐引用方式 GB/T 7714 | Gao, Yunfei,Wang, Xijun,Liu, Junchen,et al. A molten carbonate shell modified perovskite redox catalyst for anaerobic oxidative dehydrogenation of ethane[J]. SCIENCE ADVANCES,2020,6(17):10. |
| APA | Gao, Yunfei.,Wang, Xijun.,Liu, Junchen.,Huang, Chuande.,Zhao, Kun.,...&Li, Fanxing.(2020).A molten carbonate shell modified perovskite redox catalyst for anaerobic oxidative dehydrogenation of ethane.SCIENCE ADVANCES,6(17),10. |
| MLA | Gao, Yunfei,et al."A molten carbonate shell modified perovskite redox catalyst for anaerobic oxidative dehydrogenation of ethane".SCIENCE ADVANCES 6.17(2020):10. |
入库方式： OAI收割
来源：广州能源研究所
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