Different oxidation routes for lattice oxygen recovery of double-perovskite type oxides LaSrFeCoO6 as oxygen carriers for chemical looping steam methane reforming

doi:10.1016/j.jechem.2016.11.016

GIEC OpenIR > 中国科学院广州能源研究所

	Different oxidation routes for lattice oxygen recovery of double-perovskite type oxides LaSrFeCoO6 as oxygen carriers for chemical looping steam methane reforming
	Zhao, Kun1,2,3 ; Shen, Yang 2,3; Huang, Zhen 1; He, Fang1 ; Wei, Guoqiang 1,3; Zheng, Anqing1,3 ; Li, Haibin1,3 ; Zhao, Zengli1,3
	2017-05-01
发表期刊	JOURNAL OF ENERGY CHEMISTRY
卷号	26 期号:3 页码:501-509
摘要	Double-perovskite type oxide LaSrFeCoO6 (LSFCO) was used as oxygen carrier for chemical looping steam methane reforming (CL-SMR) due to its unique structure and reactivity. Two different oxidation routes, steam-oxidation and steam-air-stepwise-oxidation, were applied to investigate the recovery behaviors of the lattice oxygen in the oxygen carrier. The characterizations of the oxide were determined by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), hydrogen temperature-programmed reduction (H-2 -TPR) and scanning electron microscopy (SEM). The fresh sample LSFCO exhibits a monocrystalline perovskite structure with cubic symmetry and high crystallinity, except for a little impurity phase due to the antisite defect of Fe/Co disorder. The deconvolution distribution of XPS patterns indicated that Co, and Fe are predominantly in an oxidized state (Fe3+ and Fe2+) and (Co2+ and Co-3 (+)), while O 1s exists at three species of lattice oxygen, chemisorbed oxygen and physical adsorbed oxygen. The double perovskite structure and chemical composition recover to the original state after the steam and air oxidation, while the Co ion cannot incorporate into the double perovskite structure and thus form the CoO just via individual steam oxidation. In comparison to the two different oxidation routes, the sample obtained by steam-oxidation exhibits even higher CH4 conversion, CO and H-2 selectivity and stronger hydrogen generation capacity. (C) 2016Science Press and Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier B.V. and Science Press. All rights reserved.
文章类型	Article
关键词	Double-perovskite Chemical Looping Lattice Oxygen Oxidizing Agent Redox
WOS标题词	Science & Technology ; Physical Sciences ; Technology
DOI	10.1016/j.jechem.2016.11.016
研究领域[WOS]	Chemistry ; Energy & Fuels ; Engineering
关键词[WOS]	HYDROGEN-PRODUCTION ; MIXED-OXIDE ; CATALYSTS ; SYNGAS ; FE ; COMBUSTION ; CO
收录类别	SCI
语种	英语
项目资助者	National Natural Science Foundation of China(51406208 ; Science & Technology Research Project of Guangdong Province(2015A010106009) ; Key Laboratory of Renewable Energy, Chinese Academy of Sciences(Y607j51001) ; 51406214)
WOS类目	Chemistry, Applied ; Chemistry, Physical ; Energy & Fuels ; Engineering, Chemical
WOS记录号	WOS:000404653700026
引用统计	被引频次：38[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/344007/14152
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, Key Lab Renewable Energy, Guangzhou 510640, Guangdong, Peoples R China 2.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangdong Key Lab New & Renewable Energy Res & De, Guangzhou 510640, Guangdong, Peoples R China 3.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,Shen, Yang,Huang, Zhen,et al. Different oxidation routes for lattice oxygen recovery of double-perovskite type oxides LaSrFeCoO6 as oxygen carriers for chemical looping steam methane reforming[J]. JOURNAL OF ENERGY CHEMISTRY,2017,26(3):501-509.
APA	Zhao, Kun.,Shen, Yang.,Huang, Zhen.,He, Fang.,Wei, Guoqiang.,...&Zhao, Zengli.(2017).Different oxidation routes for lattice oxygen recovery of double-perovskite type oxides LaSrFeCoO6 as oxygen carriers for chemical looping steam methane reforming.JOURNAL OF ENERGY CHEMISTRY,26(3),501-509.
MLA	Zhao, Kun,et al."Different oxidation routes for lattice oxygen recovery of double-perovskite type oxides LaSrFeCoO6 as oxygen carriers for chemical looping steam methane reforming".JOURNAL OF ENERGY CHEMISTRY 26.3(2017):501-509.