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Heteroatom-doping regulated Mg6MnO8 for improving C-2(+) hydrocarbons during chemical looping oxidative coupling of methane

文献类型：期刊论文

作者Huang, Ju1; Zhao, Kun2,3,4; Jiang, Shican2,3,4; Kang, Shunshun2,3,4; Lin, Yan2,3,4; Huang, Zhen2,3,4; Zheng, Anqing2,3,4; Zhao, Zengli2,3,4
刊名FUEL PROCESSING TECHNOLOGY
出版日期2022-10-01
卷号235页码:12
ISSN号0378-3820
关键词Methane Chemical looping oxidative coupling C2+ hydrocarbons Oxygen carrier Oxygen species
DOI10.1016/j.fuproc.2022.107352
通讯作者Zhao, Kun(zhaokun@ms.giec.ac.cn) ; Zheng, Anqing(zhengaq@ms.giec.ac.cn)
英文摘要Chemical looping oxidative coupling of methane (CLOCM) is a novel process for the selective oxidization of methane to produce C-2(+) hydrocarbons. However, the high activity of oxygen carriers usually promotes the undesired complete or partial oxidation of methane to form large amounts of COx. Herein, a series of novel composite oxide carriers of Mg 6 MnO 8 doped by hetematoms (Na, W, and P) are developed to achieve selective and stable production of C-2(+) hydrocarbons from CLOCM of methane. The redox performance of hetematom-doped Mg6MnO8 was evaluated in a U-tube reactor coupling with various analytical methods. It is found that Na doping can improve the content of surface O- and Mn2+/Mn3+ species of Mg6MnO8, thus improving the C-2(+) selectivity and yield. The highest C-2(+) selectivity of 82.9% and the highest C-2(+) yield of 23.2% are obtained on 4Na-Mg6MnO8 and 10Na-Mg6MnO8, respectively. The co-doping of W can stabilize the surface Na species via the formation of Na-O-W and Na-O-Mn bonds, thus resulting in the stable performance of NaW-Mg(6)MnO(8 )in 20 redox cycles. It is thus concluded that the key to achieving CLOCM with high C-2(+) selectivity and yield is the stable formation of surface O- and Mn2+/Mn3+ species of oxygen carriers regulated by doping of hetematoms.
WOS关键词OXYGEN CARRIER ; NATURAL-GAS ; CONVERSION ; CATALYSTS ; PEROVSKITES ; SELECTIVITY ; ETHYLENE ; ETHANE ; METAL
资助项目National Natural Science Foundation of China[51876205] ; National Natural Science Foundation of China[51776210] ; National Natural Science Foundation of China[22179027] ; Youth Innovation Promotion Association, CAS[2019341] ; Science and Technology Program of Guangzhou[201904010128] ; Guangxi Natural Science Foundation[2018GXNSFDA281005] ; R & D Project of Guilin University of Technology[GLUTQD2018027]
WOS研究方向Chemistry ; Energy & Fuels ; Engineering
语种英语
出版者ELSEVIER
WOS记录号WOS:000832742300002
资助机构National Natural Science Foundation of China ; Youth Innovation Promotion Association, CAS ; Science and Technology Program of Guangzhou ; Guangxi Natural Science Foundation ; R & D Project of Guilin University of Technology
源URL[http://ir.giec.ac.cn/handle/344007/37072]  
专题中国科学院广州能源研究所
通讯作者Zhao, Kun; Zheng, Anqing
作者单位1.Guilin Univ Technol, Coll Chem & Bioengn, Guilin 541004, Peoples R China
2.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China
3.CAS Key Lab Renewable Energy, Guangzhou 510640, Peoples R China
4.Guangdong Prov Key Lab New & Renewable Energy Res, Guangzhou 510640, Peoples R China
推荐引用方式
GB/T 7714		 Huang, Ju,Zhao, Kun,Jiang, Shican,et al. Heteroatom-doping regulated Mg6MnO8 for improving C-2(+) hydrocarbons during chemical looping oxidative coupling of methane[J]. FUEL PROCESSING TECHNOLOGY,2022,235:12.
APA Huang, Ju.,Zhao, Kun.,Jiang, Shican.,Kang, Shunshun.,Lin, Yan.,...&Zhao, Zengli.(2022).Heteroatom-doping regulated Mg6MnO8 for improving C-2(+) hydrocarbons during chemical looping oxidative coupling of methane.FUEL PROCESSING TECHNOLOGY,235,12.
MLA Huang, Ju,et al."Heteroatom-doping regulated Mg6MnO8 for improving C-2(+) hydrocarbons during chemical looping oxidative coupling of methane".FUEL PROCESSING TECHNOLOGY 235(2022):12.

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来源：广州能源研究所

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