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

doi:10.1016/j.apcata.2020.117910

GIEC OpenIR

	Alkali-metal enhanced LaMnO3 perovskite oxides for chemical looping oxidative dehydrogenation of ethane
	Ding, Weixiao 1,2,3,4; Zhao, Kun2,3,4 ; Jiang, Shican 1,2,3,4; Zhao, Zengli2,3,4 ; Cao, Yan 2,3,4; He, Fang1
	2021-01-05
发表期刊	APPLIED CATALYSIS A-GENERAL
ISSN	0926-860X
卷号	609 页码:8
通讯作者	Zhao, Kun(zhaokun@ms.giec.ac.cn) ; He, Fang(hefang@glut.edu.cn)
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.
关键词	Chemical looping ODH Ethane Alkali promoter Intermediate oxygen
DOI	10.1016/j.apcata.2020.117910
关键词[WOS]	ETHYLENE PRODUCTION ; REDOX CATALYSTS ; PROCESS SIMULATIONS ; METHANE ; CRACKING ; EXPLORATION ; MECHANISMS ; SCHEME
收录类别	SCI
语种	英语
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
项目资助者	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
WOS类目	Chemistry, Physical ; Environmental Sciences
WOS记录号	WOS:000599504600006
出版者	ELSEVIER
引用统计	被引频次：23[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.giec.ac.cn/handle/344007/32332
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.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
第一作者单位	中国科学院广州能源研究所
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.