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Mg-doped La1.6Sr0.4FeCoO6 for anaerobic oxidative dehydrogenation of ethane using surface-absorbed oxygen with tuned electronic structure
Li, Ming1,2,3; Gao, Yunfei5; Zhao, Kun1,2,3; Li, Haibin1,2,3; He, Fang4; Lv, Pengmei1,2,3,6; Huang, Zhen1,2,3
2021-06-01
Source PublicationFUEL PROCESSING TECHNOLOGY
ISSN0378-3820
Volume216Pages:9
Corresponding AuthorZhao, Kun(zhaokun@ms.giec.ac.cn) ; He, Fang(hefang@glut.edu.cn)
AbstractChemical looping oxidative dehydrogenation (CL-ODH) of ethane is a promising approach for converting ethane as a fuel from shale to value-added ethylene in a more economical way. In this work, La1.6Sr0.4FeCoO6 (LSFC) with earth-abundant Mg dopants were investigated for CL-ODH of ethane in the temperature between 650 and 750 degrees C. Mg doping substantially increased ethylene selectivity of LSFC, and up to 52.9%-ethane conversion and 89.4%-ethylene selectivity were achieved at 725 degrees C. X-ray photoelectron spectroscopy (XPS) indicated that Mg-doping in LSFC induced surface electron donation from Sr site to O site, rendering a surface with more electron-rich oxygen species. This was further confirmed with O-2-temperature-programmed desorption. It was determined that these surface electron-rich oxygen species were essential for high ethylene selectivities. Consecutive ethane pulse and detailed XPS and X-Ray diffraction characterizations were further used to pinpoint the exact roles of different surface/bulk oxygen species. The results indicated that surface-absorbed peroxide (O-2(surface)2-) species played the most critical role in selective ethane CL-ODH and the use of O-2(surface)2- can be a general principle for designing CL-ODH catalysts.
KeywordChemical looping Oxidative dehydrogenation Ethylene Perovskite Surface oxygen
DOI10.1016/j.fuproc.2021.106771
WOS KeywordPEROVSKITE-TYPE OXIDES ; FIXED-BED REACTOR ; ETHYLENE PRODUCTION ; REDOX CATALYSTS ; METHANE ; KINETICS ; BEHAVIOR ; SYNGAS ; GAS ; XPS
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[51876205] ; National Key Research and Development Program of China[2017YFE0105500] ; pearl River S&T Nova Program of Guangzhou[201906010092] ; Science & Technology Research Project of Guangdong Province[2017A020216009] ; Guangxi Natural Science Foundation[2018GXNSFDA281005]
WOS Research AreaChemistry ; Energy & Fuels ; Engineering
Funding OrganizationNational Natural Science Foundation of China ; National Key Research and Development Program of China ; pearl River S&T Nova Program of Guangzhou ; Science & Technology Research Project of Guangdong Province ; Guangxi Natural Science Foundation
WOS SubjectChemistry, Applied ; Energy & Fuels ; Engineering, Chemical
WOS IDWOS:000671117200008
PublisherELSEVIER
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.giec.ac.cn/handle/344007/33431
Collection中国科学院广州能源研究所
Corresponding AuthorZhao, Kun; He, Fang
Affiliation1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China
2.CAS Key Lab Renewable Energy, Guangzhou 510640, Peoples R China
3.Guangdong Prov Key Lab New & Renewable Energy Res, Guangzhou 510640, Peoples R China
4.Guilin Univ Technol, Coll Chem & Bioengn, Guilin 541004, Peoples R China
5.North Carolina State Univ, Dept Chem & Biomol Engn, 911 Partners Way, Raleigh, NC 27695 USA
6.Collaborat Innovat Ctr Biomass Energy, Zhengzhou 450002, Henan, Peoples R China
First Author AffilicationGuangZhou Institute of Energy Conversion,Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Li, Ming,Gao, Yunfei,Zhao, Kun,et al. Mg-doped La1.6Sr0.4FeCoO6 for anaerobic oxidative dehydrogenation of ethane using surface-absorbed oxygen with tuned electronic structure[J]. FUEL PROCESSING TECHNOLOGY,2021,216:9.
APA Li, Ming.,Gao, Yunfei.,Zhao, Kun.,Li, Haibin.,He, Fang.,...&Huang, Zhen.(2021).Mg-doped La1.6Sr0.4FeCoO6 for anaerobic oxidative dehydrogenation of ethane using surface-absorbed oxygen with tuned electronic structure.FUEL PROCESSING TECHNOLOGY,216,9.
MLA Li, Ming,et al."Mg-doped La1.6Sr0.4FeCoO6 for anaerobic oxidative dehydrogenation of ethane using surface-absorbed oxygen with tuned electronic structure".FUEL PROCESSING TECHNOLOGY 216(2021):9.
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