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Preparation of double perovskite-type oxide LaSrFeCoO6 for chemical looping steam methane reforming to produce syngas and hydrogen
Zhao Kun1,2,3; Shen Yang3; He Fang1; Huang Zhen1; Wei Guoqiang1; Zheng Anqing1; Li Haibin1; Zhao Zengli1
2016-10-01
发表期刊JOURNAL OF RARE EARTHS
卷号34期号:10页码:1032-1041
摘要Double-perovskite type oxide LaSrFeCoO6 was used as oxygen carrier for chemical looping steam methane reforming (CL-SMR) due to its unique structure and reactivity. Solid-phase, amorphous alloy, sol-gel and micro-emulsion methods were used to prepare the LaSrFeCoO6 samples, and the as-prepared samples were characterized by means of X-ray diffraction (XRD), hydrogen temperature-programmed reduction (H-2-TPR), X-ray photoelectron spectroscopy (XPS), Brunauer-Emmett-Teller (BET) surface area. Results showed that the samples made by the four different methods exhibited pure crystalline perovskite structure. The ordered double perovskite LaSrFeCoO6 was regarded as a regular arrangement of alternating FeO6 and CoO6 corner-shared octahedra, with La and Sr cations occupying the voids in between the octahedral. Because the La3+ and Sr2+ ions in A-site did not take part in reaction, the TPR patterns showed the reductive properties of the B-site metals. The reduction peaks at low temperature revealed the reduction of adsorbed oxygen on surface and combined with the reduction of Co3+ to Co2+ and to Co-0, while the reduction of Fe3+ to Fe2+ and the partial reduction of Fe2+ to Fe-0 occurred at higher temperatures. From the point of view of the oxygen-donation ability, resistance to carbon formation, as well as hydrogen generation capacity, the sample made by micro-emulsion method exhibited the best reactivity. Its redox reactivity was very stable in ten successive cycles without deactivation. Compared to the single perovskite-type oxides LaFeO3 and LaCoO3, the double perovskite LaSrFeCoO6 exhibited better syngas and hydrogen generation capacity.
文章类型Article
关键词Double-perovskite Cl-smr Micro-emulsion Oxygen Species Redox Rare Earths
WOS标题词Science & Technology ; Physical Sciences
资助者National Natural Science Foundation of China(51406208 ; Science & Technology Research Project of Guangdong Province(2013B050800008 ; 51406214) ; 2015A010106009) ; National Natural Science Foundation of China(51406208 ; Science & Technology Research Project of Guangdong Province(2013B050800008 ; 51406214) ; 2015A010106009)
DOI10.1016/S1002-0721(16)60131-X
研究领域[WOS]Chemistry
关键词[WOS]OXYGEN-CARRIERS ; CATALYTIC PERFORMANCE ; PARTIAL OXIDATION ; MIXED OXIDES ; COMBUSTION ; TEMPERATURE ; SR
收录类别SCI
语种英语
资助者National Natural Science Foundation of China(51406208 ; Science & Technology Research Project of Guangdong Province(2013B050800008 ; 51406214) ; 2015A010106009) ; National Natural Science Foundation of China(51406208 ; Science & Technology Research Project of Guangdong Province(2013B050800008 ; 51406214) ; 2015A010106009)
WOS类目Chemistry, Applied
WOS记录号WOS:000386780700010
引用统计
被引频次:2[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/344007/13924
专题中国科学院广州能源研究所
作者单位1.Chinese Acad Sci, Key Lab Renewable Energy, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China
2.Chinese Acad Sci, Guangdong Key Lab New & Renewable Energy Res & De, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
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Zhao Kun,Shen Yang,He Fang,et al. Preparation of double perovskite-type oxide LaSrFeCoO6 for chemical looping steam methane reforming to produce syngas and hydrogen[J]. JOURNAL OF RARE EARTHS,2016,34(10):1032-1041.
APA Zhao Kun.,Shen Yang.,He Fang.,Huang Zhen.,Wei Guoqiang.,...&Zhao Zengli.(2016).Preparation of double perovskite-type oxide LaSrFeCoO6 for chemical looping steam methane reforming to produce syngas and hydrogen.JOURNAL OF RARE EARTHS,34(10),1032-1041.
MLA Zhao Kun,et al."Preparation of double perovskite-type oxide LaSrFeCoO6 for chemical looping steam methane reforming to produce syngas and hydrogen".JOURNAL OF RARE EARTHS 34.10(2016):1032-1041.
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