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Perovskite-type oxides LaFe1-xCoxO3 for chemical looping steam methane reforming to syngas and hydrogen co-production
Zhao, Kun1,2; He, Fang1; Huang, Zhen1; Wei, Guoqiang1; Zheng, Anqing1; Li, Haibin1; Zhao, Zengli1
2016-04-15
Source PublicationAPPLIED ENERGY
Volume168Pages:193-203
AbstractChemical looping steam methane reforming is a novel technology for syngas and hydrogen production. It's very important to find suitable oxygen carriers with good reactivity and high agglomeration resistance for this process. In the present work, the perovskite-type oxides LaFe1-xCoxO3 with x = 0.1, 0.3, 0.5, 0.7, 1.0 were used as oxygen carriers. The influence of Co doping on the characteristics and the stabilities of these perovskite-type oxides were investigated by means of X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), hydrogen temperature-programmed reduction (H-2-TPR), Brunauer-E mmett-Teller (BET) surface area and fixed-bed experiments. All the as-prepared samples with various Co substitutions exhibited crystalline perovskite structure similar to LaFeO3. The surface adsorbed oxygen which is beneficial to the complete oxidation of CH4 increased as the Co substitution increase. From the point of view of the oxygen-donation ability, resistance to carbon formation, as well as hydrogen generation capacity, the optimal degree of Co substitution is x = 0.3. Despite slight sintering, the perovskite-type oxide LaFe0.7Co0.3O3. showed very good regenerability during the twenty redox reactions. In the methane reduction stage, syngas with H-2/CO molar ratio close to 2:1 was obtained in the twenty cycles with 85% of CH4 conversion, 43% of CO selectivity, and 50% of H-2 selectivity. While in the steam oxidation stage, a steadily hydrogen productivity at about 4 mmol/g oxygen carriers was generated. (C) 2016 Elsevier Ltd. All rights reserved.
SubtypeArticle
KeywordChemical Looping Methane Reforming Syngas Hydrogen Redox
WOS HeadingsScience & Technology ; Technology
DOI10.1016/j.apenergy.2016.01.052
WOS Subject ExtendedEnergy & Fuels ; Engineering
WOS KeywordSHELL REDOX CATALYST ; FE MIXED OXIDES ; PARTIAL OXIDATION ; OXYGEN-CARRIERS ; SYNTHESIS GAS ; SELECTIVE OXIDATION ; LATTICE OXYGEN ; GASEOUS OXYGEN ; IRON-OXIDE ; COMBUSTION
Indexed BySCI
Language英语
WOS SubjectEnergy & Fuels ; Engineering, Chemical
WOS IDWOS:000373863500017
Citation statistics
Cited Times:66[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.giec.ac.cn/handle/344007/11230
Collection中国科学院广州能源研究所
Affiliation1.Chinese Acad Sci, Guangzhou Inst Energy Convers, CAS Key Lab Renewable Energy, Guangzhou 510640, Guangdong, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
First Author AffilicationGuangZhou Institute of Energy Conversion,Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Zhao, Kun,He, Fang,Huang, Zhen,et al. Perovskite-type oxides LaFe1-xCoxO3 for chemical looping steam methane reforming to syngas and hydrogen co-production[J]. APPLIED ENERGY,2016,168:193-203.
APA Zhao, Kun.,He, Fang.,Huang, Zhen.,Wei, Guoqiang.,Zheng, Anqing.,...&Zhao, Zengli.(2016).Perovskite-type oxides LaFe1-xCoxO3 for chemical looping steam methane reforming to syngas and hydrogen co-production.APPLIED ENERGY,168,193-203.
MLA Zhao, Kun,et al."Perovskite-type oxides LaFe1-xCoxO3 for chemical looping steam methane reforming to syngas and hydrogen co-production".APPLIED ENERGY 168(2016):193-203.
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