Three-dimensionally ordered macroporous LaFeO3 perovskites for chemical-looping steam reforming of methane

doi:10.1016/j.ijhydene.2013.12.046

GIEC OpenIR > 中国科学院广州能源研究所

	Three-dimensionally ordered macroporous LaFeO3 perovskites for chemical-looping steam reforming of methane
	Zhao, Kun1,2 ; He, Fang1 ; Huang, Zhen 1; Zheng, Anqing1 ; Li, Haibin1 ; Zhao, Zengli1
	2014-02-25
发表期刊	INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
卷号	39 期号:7 页码:3243-3252
摘要	Three-dimensionally ordered macroporous (3DOM) LaFeO3 and nano-LaFeO3 perovskitetype oxides were synthesized by impregnation of polystyrene (PS) templates and combustion method, respectively. The obtained LaFeO3 perovskites were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), Brunauer Emmett Teller (BET) surface area, and hydrogen-temperature programmed reduction (H-2-TPR). The performance of the perovsldtes as oxygen carriers in chemical looping steam methane reforming (CL-SMR) to produce syngas (H-2 + CO) and hydrogen were investigated. The synthesized 3DOM-LaFeO3 was pure crystalline perovskite giving a surface area of 8.088 m(2)/g, higher than that of nano-LaFeO3 particles (4.323 m(2)/g). In the methane reduction stage, methane was partially oxidized into syngas at a H-2/CO molar ratio close to 2:1 by the 3DOM-LaFeO3 in the main stage of the reactions. In the steam oxidation stage, the reduced perovskites were oxidized by steam to generate hydrogen simultaneously. No significant decrease of the yields of syngas and hydrogen was observed during ten successive redox cycles, indicating that the 3DOM-LaFeO3 perovskites have good repeatability. In comparison to nano-LaFeO3, 3DOM-LaFeO3 has more stable reactivity of methane oxidation and better resistance to carbon formation. In spite of a part of 3DOM structure were collapsed in the course of the cyclic reactions, the specific surface area of the 3DOMLaFeO(3) was still higher than that of the nano one. The better reactivity of 3DOM-LaFeO3 compared with that of nano-LaFeO3 is partially attributed to the higher surface area. Copyright (C) 2013, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
文章类型	Article
关键词	3dom Perovskite Chemical-looping Steam Methane Reforming Syngas Hydrogen
WOS标题词	Science & Technology ; Physical Sciences ; Technology
DOI	10.1016/j.ijhydene.2013.12.046
研究领域[WOS]	Chemistry ; Electrochemistry ; Energy & Fuels
关键词[WOS]	HYDROGEN-PRODUCTION ; OXYGEN CARRIERS ; COMBUSTION ; PERFORMANCE ; CRYSTAL ; OXIDES ; TECHNOLOGIES ; CATALYST ; CO
收录类别	SCI
语种	英语
WOS类目	Chemistry, Physical ; Electrochemistry ; Energy & Fuels
WOS记录号	WOS:000331917400021
引用统计	被引频次：109[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/344007/10679
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
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,He, Fang,Huang, Zhen,et al. Three-dimensionally ordered macroporous LaFeO3 perovskites for chemical-looping steam reforming of methane[J]. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,2014,39(7):3243-3252.
APA	Zhao, Kun,He, Fang,Huang, Zhen,Zheng, Anqing,Li, Haibin,&Zhao, Zengli.(2014).Three-dimensionally ordered macroporous LaFeO3 perovskites for chemical-looping steam reforming of methane.INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,39(7),3243-3252.
MLA	Zhao, Kun,et al."Three-dimensionally ordered macroporous LaFeO3 perovskites for chemical-looping steam reforming of methane".INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 39.7(2014):3243-3252.