The structure-reactivity relationships of using three-dimensionally ordered macroporous LaFe1-xNixO3 perovskites for chemical-looping steam methane reforming

doi:10.1016/j.joei.2018.01.012

	The structure-reactivity relationships of using three-dimensionally ordered macroporous LaFe1-xNixO3 perovskites for chemical-looping steam methane reforming
	Shen, Yang 1,2,3,4; Zhao, Kun 1,2,3,4; He, Fang 1,2,3; Li, Haibin 1,2,3
刊名	JOURNAL OF THE ENERGY INSTITUTE
	2019-04-01
卷号	92 期号:2 页码:239-246
关键词	Chemical-looping Methane reforming Syngas 3DOM perovskite Ni-substitution
ISSN号	1743-9671
DOI	10.1016/j.joei.2018.01.012
通讯作者	Zhao, Kun(zhaokun@ms.giec.ac.cn)
英文摘要	Chemical-looping steam methane reforming (CL-SMR) is a novel technology for syngas and hydrogen production without purification process. A series of three-dimensionally ordered macroporous (3DOM) LaFe1-xNixO3 (x = 0.05, 0.1, 0.15, 0.2, 0.25, 0.3) perovskite-type oxides were synthesized using the polystyrene colloidal crystal templating method. The structural and physico-chemical properties of the obtained oxides were investigated by scanning electron microscopy (SEM), X-ray diffraction (XRD) and Brunauere-Emmette-Teller (BET) surface area technologies. The structure-reactivity relationships and effects of Ni-substitution on the improvement of reactivity and resistance to carbon formation were investigated in a thermo-gravimetric analyzer and a fixed-bed reactor. It was found that the as-prepared oxides obtained standard perovskite structures and the well-ordered skeleton was surrounded with uniform close-packed macroporous windows. Ni-substitution improved the ability for oxygen supply but simultaneously enhanced the methane dissociation. While the openness channel and large surface area of 3DOM perovskite allowed low mass-transfer resistances and provided high active sites for reaction. Complicated factors synergistically affected the reactivity and an optimal value for Ni-substitution is confirmed with x = 0.1 by comprehensively considering from the points of reactivity, resistance to carbon formation, as well as hydrogen generation capacity. During the following successive redox reactions, 3DOM LaFe0.9Ni0.1O3 exhibited good regenerability and thermo-stability probably converting 90% of CH4 into syngas in methane reforming stage and generating similar to 210-220 ml hydrogen in steam splitting stage. (C) 2018 Energy Institute. Published by Elsevier Ltd. All rights reserved.
资助项目	National Key Research and Development Program of China[2017YFE0105500] ; Science & Technology Research Project of Guangdong Province[2015A010106009] ; National Natural Science Foundation of China[51406208]
WOS关键词	OXYGEN-CARRIER ; SYNTHESIS GAS ; HYDROGEN ; COMBUSTION ; CATALYSTS ; REACTOR ; OXIDES ; PERFORMANCE ; GENERATION ; OXIDATION
WOS研究方向	Energy & Fuels
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000460717800004
资助机构	National Key Research and Development Program of China ; Science & Technology Research Project of Guangdong Province ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.giec.ac.cn/handle/344007/24761]
专题	中国科学院广州能源研究所
通讯作者	Zhao, Kun
作者单位	1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Beijing, Peoples R China 2.CAS Key Lab Renewable Energy, Beijing, 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
推荐引用方式 GB/T 7714	Shen, Yang,Zhao, Kun,He, Fang,et al. The structure-reactivity relationships of using three-dimensionally ordered macroporous LaFe1-xNixO3 perovskites for chemical-looping steam methane reforming[J]. JOURNAL OF THE ENERGY INSTITUTE,2019,92(2):239-246.
APA	Shen, Yang,Zhao, Kun,He, Fang,&Li, Haibin.(2019).The structure-reactivity relationships of using three-dimensionally ordered macroporous LaFe1-xNixO3 perovskites for chemical-looping steam methane reforming.JOURNAL OF THE ENERGY INSTITUTE,92(2),239-246.
MLA	Shen, Yang,et al."The structure-reactivity relationships of using three-dimensionally ordered macroporous LaFe1-xNixO3 perovskites for chemical-looping steam methane reforming".JOURNAL OF THE ENERGY INSTITUTE 92.2(2019):239-246.