Ca2MnO4-layered perovskite modified by NaNO3 for chemical-looping oxidative dehydrogenation of ethane to ethylene
文献类型：期刊论文
| 作者 | Ding, Weixiao1,2,3; Zhao, Kun2; Jiang, Shican2,3; Huang, Zhen2; He, Fang3 |
| 刊名 | CHINESE JOURNAL OF CHEMICAL ENGINEERING
 |
| 出版日期 | 2024-04-01 |
| 卷号 | 68页码:53-64 |
| 关键词 | Chemical-looping oxidative dehydrogenation Ethane Ethylene NaNO3-dopedCa2MnO4 redox catalyst Layered perovskites |
| ISSN号 | 1004-9541 |
| DOI | 10.1016/j.cjche.2023.12.021 |
| 通讯作者 | Zhao, Kun(zhaokun@ms.giec.ac.cn) ; He, Fang(hefang@glut.edu.cn) |
| 英文摘要 | Chemical-looping oxidative dehydrogenation (CL-ODH) is a process designed for the conversion of alkanes into olefins through cyclic redox reactions, eliminating the need for gaseous O2. In this work, we investigated the use of Ca2MnO4-layered perovskites modified with NaNO3 dopants, serving as redox catalysts (also known as oxygen carriers), for the CL-ODH of ethane within a temperature range of 700 degrees C -780 degrees C. Our findings revealed that the incorporation of NaNO3 as a modifier significantly enhanced the selectivity for ethylene generation from Ca2MnO4. At 750 degrees C and a gas hourly space velocity of 1300 h-1, we achieved an ethane conversion up to 68.17%, accompanied by a corresponding ethylene yield of 57.39%. X-ray photoelectron spectroscopy analysis unveiled that the doping NaNO3 onto Ca2MnO4 not only played a role in reducing the oxidation state of Mn ions but also increased the lattice oxygen content of the redox catalyst. Furthermore, formation of NaNO3 shell on the surface of Ca2MnO4 led to a reduction in the concentration of manganese sites and modulated the oxygen-releasing behavior in a step-wise manner. This modulation contributed significantly to the enhanced selectivity for ethylene of the NaNO3-doped Ca2MnO4 catalyst. These findings provide compelling evidence for the potential of Ca2MnO4-layered perovskites as promising redox catalysts in the context of CL-ODH reactions. (c) 2024 The Chemical Industry and Engineering Society of China, and Chemical Industry Press Co., Ltd. All rights reserved. |
| WOS关键词 | MIXED OXIDES ; PROCESS SIMULATIONS ; OXYGEN CARRIERS ; STEAM CRACKING ; CATALYSTS ; COMBUSTION ; REACTOR ; SURFACE ; SCHEME ; TIO2 |
| 资助项目 | National Natural Science Foundation of China[22179027] ; Natural Science Foundation of Guangxi Province[2021GXNSFAA075063] ; Natural Science Foundation of Guangxi Province[2018GXNSFDA281005] ; National Key Research and Development Program of China[2017YFE0105500] ; Science & Technology Research Project of Guangdong Province[2017A020216009] |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001227067600001 |
| 出版者 | CHEMICAL INDUSTRY PRESS CO LTD |
| 资助机构 | National Natural Science Foundation of China ; Natural Science Foundation of Guangxi Province ; National Key Research and Development Program of China ; Science & Technology Research Project of Guangdong Province |
| 源URL | [http://ir.giec.ac.cn/handle/344007/41718]  |
| 专题 | 中国科学院广州能源研究所 |
| 通讯作者 | Zhao, Kun; He, Fang |
| 作者单位 | 1.Nanjing Univ Sci & Technol, Sch Chem & Chem Engn, Nanjing 210094, Peoples R China 2.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China 3.Guilin Univ Technol, Coll Chem & Bioengn, Guilin 541006, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ding, Weixiao,Zhao, Kun,Jiang, Shican,et al. Ca2MnO4-layered perovskite modified by NaNO3 for chemical-looping oxidative dehydrogenation of ethane to ethylene[J]. CHINESE JOURNAL OF CHEMICAL ENGINEERING,2024,68:53-64. |
| APA | Ding, Weixiao,Zhao, Kun,Jiang, Shican,Huang, Zhen,&He, Fang.(2024).Ca2MnO4-layered perovskite modified by NaNO3 for chemical-looping oxidative dehydrogenation of ethane to ethylene.CHINESE JOURNAL OF CHEMICAL ENGINEERING,68,53-64. |
| MLA | Ding, Weixiao,et al."Ca2MnO4-layered perovskite modified by NaNO3 for chemical-looping oxidative dehydrogenation of ethane to ethylene".CHINESE JOURNAL OF CHEMICAL ENGINEERING 68(2024):53-64. |
入库方式： OAI收割
来源：广州能源研究所
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