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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
发表期刊APPLIED ENERGY
卷号168页码:193-203
摘要Chemical 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.
文章类型Article
关键词Chemical Looping Methane Reforming Syngas Hydrogen Redox
WOS标题词Science & Technology ; Technology
DOI10.1016/j.apenergy.2016.01.052
研究领域[WOS]Energy & Fuels ; Engineering
关键词[WOS]SHELL REDOX CATALYST ; FE MIXED OXIDES ; PARTIAL OXIDATION ; OXYGEN-CARRIERS ; SYNTHESIS GAS ; SELECTIVE OXIDATION ; LATTICE OXYGEN ; GASEOUS OXYGEN ; IRON-OXIDE ; COMBUSTION
收录类别SCI
语种英语
WOS类目Energy & Fuels ; Engineering, Chemical
WOS记录号WOS:000373863500017
引用统计
被引频次:35[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/344007/11230
专题中国科学院广州能源研究所
作者单位1.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
推荐引用方式
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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