Knowledge Management System Of Guangzhou Institute of Energy Conversion, CAS
Exploration of the mechanism of chemical looping steam methane reforming using double perovskite-type oxides La1.6Sr0.4FeCoO6 | |
Zhao, Kun1,2,3,4; Zheng, Anqing1,2,3; Li, Haibin1,2,3; He, Fang1,2,3; Huang, Zhen1,2,3; Wei, Guoqiang1,2,3; Shen, Yang4; Zhao, Zengli1,2,3 | |
2017-12-15 | |
发表期刊 | APPLIED CATALYSIS B-ENVIRONMENTAL |
ISSN | 0926-3373 |
卷号 | 219页码:672-682 |
摘要 | Co-production of syngas and hydrogen via chemical looping steam methane reforming (CL-SMR) using double perovskite-type oxide La1.6Sr0.4FeCoO6 as an oxygen carrier was studied. The reaction mechanisms, including the synergistic effects, the metal transitions, the oxygen diffusion and the migration of reaction boundary during the two-step reactions, were systematically investigated by the characterizations of the oxygen carriers at different reaction stages using XRD, XPS, H-2-TPR and TG technologies. Meanwhile, isothermal reactions were carried out in a fixed-bed reactor to analysis the reaction products. Three reaction stages including the total oxidation of methane with the active adsorbed oxygen, partial oxidation of methane with the lattice oxygen, and the methane decomposition were identified, using the surface of the oxygen carrier particles as reaction boundary. A large number of syngas was generated due to the concordant of methane dissociation with the lattice oxygen diffusion, and the resistant to coke formation was enhanced effectively. In the steam dissociation stage, the deep reduced metals (Fe2+ and Co-0) combining with the abundant oxygen vacancies provided enough active sites for the breakage of H-O bond of H2O. The oxygen vacancies were neutralized immediately by the O atom, and the two H atoms combined together to form amounts of H-2. These results suggested that, the positive roles displayed by the synergistic effects between multi-metals in double perovskite structure could effectively promote the partial oxidation of methane and steam splitting. It provides a potential way to develop more active oxygen carrier for CL-SMR to co-produce syngas and hydrogen by comprehensively considering the methane dissociation and the lattice oxygen diffusion. (C) 2017 Elsevier B.V. All rights reserved. |
文章类型 | Article |
关键词 | Cl-smr Double Perovskite Mechanism Reaction Boundary Synergistic Effect |
WOS标题词 | Science & Technology ; Physical Sciences ; Technology |
DOI | 10.1016/j.apcatb.2017.08.027 |
研究领域[WOS] | Chemistry ; Engineering |
关键词[WOS] | DIRECT PARTIAL OXIDATION ; SHELL REDOX CATALYST ; CO-RICH SYNGAS ; SYNTHESIS GAS ; OXYGEN CARRIERS ; STEPWISE PRODUCTION ; HYDROGEN ; COMBUSTION ; FE ; LAFEO3 |
收录类别 | SCI |
语种 | 英语 |
项目资助者 | National Key Research and Development Program of China(2016YFB0901401) ; National Key Research and Development Program of China(2016YFB0901401) ; National Natural Science Foundation of China(51406208 ; National Natural Science Foundation of China(51406208 ; Science & Technology Research Project of Guangdong Province(2017A020216009 ; Science & Technology Research Project of Guangdong Province(2017A020216009 ; 51406214) ; 51406214) ; 2015A010106009) ; 2015A010106009) ; National Key Research and Development Program of China(2016YFB0901401) ; National Key Research and Development Program of China(2016YFB0901401) ; National Natural Science Foundation of China(51406208 ; National Natural Science Foundation of China(51406208 ; Science & Technology Research Project of Guangdong Province(2017A020216009 ; Science & Technology Research Project of Guangdong Province(2017A020216009 ; 51406214) ; 51406214) ; 2015A010106009) ; 2015A010106009) |
WOS类目 | Chemistry, Physical ; Engineering, Environmental ; Engineering, Chemical |
WOS记录号 | WOS:000412957100069 |
出版者 | ELSEVIER SCIENCE BV |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.giec.ac.cn/handle/344007/16384 |
专题 | 固体废弃物能实验室 |
通讯作者 | He, Fang |
作者单位 | 1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou, Guangdong, Peoples R China 2.CAS Key Lab Renewable Energy, Guangzhou, Guangdong, Peoples R China 3.Guangdong Prov Key Lab New & Renewable Energy Res, Guangzhou, Guangdong, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, 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 | Zhao, Kun,Zheng, Anqing,Li, Haibin,et al. Exploration of the mechanism of chemical looping steam methane reforming using double perovskite-type oxides La1.6Sr0.4FeCoO6[J]. APPLIED CATALYSIS B-ENVIRONMENTAL,2017,219:672-682. |
APA | Zhao, Kun.,Zheng, Anqing.,Li, Haibin.,He, Fang.,Huang, Zhen.,...&Zhao, Zengli.(2017).Exploration of the mechanism of chemical looping steam methane reforming using double perovskite-type oxides La1.6Sr0.4FeCoO6.APPLIED CATALYSIS B-ENVIRONMENTAL,219,672-682. |
MLA | Zhao, Kun,et al."Exploration of the mechanism of chemical looping steam methane reforming using double perovskite-type oxides La1.6Sr0.4FeCoO6".APPLIED CATALYSIS B-ENVIRONMENTAL 219(2017):672-682. |
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