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Alkali-metal enhanced LaMnO3 perovskite oxides for chemical looping oxidative dehydrogenation of ethane

文献类型：期刊论文

作者Ding, Weixiao1,2,3,4; Zhao, Kun1,3,4; Jiang, Shican1,2,3,4; Zhao, Zengli1,3,4; Cao, Yan1,3,4; He, Fang2
刊名APPLIED CATALYSIS A-GENERAL
出版日期2021-01-05
卷号609页码:8
关键词Chemical looping ODH Ethane Alkali promoter Intermediate oxygen
ISSN号0926-860X
DOI10.1016/j.apcata.2020.117910
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) of ethane provides a potential method to convert ethane into ethylene by using a circulative redox catalyst (also called oxygen carrier). In this work, perovskites type oxide LaMnO3 and three kinds of alkali-metal (Na, Na3PO4 and Na2WO4) promoted LaMnO3 redox catalysts were prepared and tested for CL-ODH of ethane. Results showed that the alkali promoters not only reduce the Mn oxidation state, but also decrease the surface manganese sites. The alkali-doping induces the formation of electron-rich intermediate oxygen species, which contributes to the higher ethylene selectivity of the alkalimodified LaMnO3. As the best candidate for CL-ODH of ethane among the four catalysts, NaW-LaMnO3 exhibited a stable activity during 25 redox cycles. 85 % of ethylene selectivity and 60 % of ethylene yield was obtained, which is significantly improved in comparison to 41.16 % ethylene yield of unpromoted LaMnO3, simultaneously exhibiting less than 1 % of coke formation.
WOS关键词ETHYLENE PRODUCTION ; REDOX CATALYSTS ; PROCESS SIMULATIONS ; METHANE ; CRACKING ; EXPLORATION ; MECHANISMS ; SCHEME
资助项目National Natural Science Foundation of China[51876205] ; National Key Research and Development Program of China[2017YFE0105500] ; Science & Technology Research Project of Guangdong Province[2017A020216009] ; Guangxi Natural Science Foundation[2018GXNSFDA281005]
WOS研究方向Chemistry ; Environmental Sciences & Ecology
语种英语
WOS记录号WOS:000599504600006
出版者ELSEVIER
资助机构National Natural Science Foundation of China ; National Key Research and Development Program of China ; Science & Technology Research Project of Guangdong Province ; Guangxi Natural Science Foundation
源URL[http://ir.giec.ac.cn/handle/344007/32331]  
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.Guangdong Prov Key Lab New & Renewable Energy Res, Guangzhou 510640, Peoples R China
2.Guilin Univ Technol, Coll Chem & Bioengn, Guilin 541004, Peoples R China
3.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China
4.CAS Key Lab Renewable Energy, Guangzhou 510640, Peoples R China
推荐引用方式
GB/T 7714		 Ding, Weixiao,Zhao, Kun,Jiang, Shican,et al. Alkali-metal enhanced LaMnO3 perovskite oxides for chemical looping oxidative dehydrogenation of ethane[J]. APPLIED CATALYSIS A-GENERAL,2021,609:8.
APA Ding, Weixiao,Zhao, Kun,Jiang, Shican,Zhao, Zengli,Cao, Yan,&He, Fang.(2021).Alkali-metal enhanced LaMnO3 perovskite oxides for chemical looping oxidative dehydrogenation of ethane.APPLIED CATALYSIS A-GENERAL,609,8.
MLA Ding, Weixiao,et al."Alkali-metal enhanced LaMnO3 perovskite oxides for chemical looping oxidative dehydrogenation of ethane".APPLIED CATALYSIS A-GENERAL 609(2021):8.

入库方式： OAI收割

来源：广州能源研究所

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