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题名: Investigation of structure and oxygen permeability of Ba-Ce-Co-Fe-O system
作者: Li, Qiming1, 2;  Zhu, Xuefeng2;  Yang, Weishen2
关键词: Ceramics ;  Composites ;  Electron microscopy ;  Crystal structure ;  Microstructure
刊名: MATERIALS RESEARCH BULLETIN
发表日期: 2010-09-01
DOI: 10.1016/j.materresbull.2010.06.006
卷: 45, 期:9, 页:1112-1117
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Technology
类目[WOS]: Materials Science, Multidisciplinary
研究领域[WOS]: Materials Science
英文摘要: Mixed ionic-electronic conducting perovskite oxides, BaCe0.1CoxFe0.9-xO3-delta, were synthesized with a combined citric acid and EDTA complexing method. The structure and oxygen permeability of BaCe0.1CoxFe0.9-xO3-delta series was investigated by X-ray diffraction (XRD), scanning electron microscope.(SEM) and oxygen permeation operation. XRD characterization showed that pure cubic perovskite structure can be obtained only if the content of cobalt and cerium in B-site of Ba-Ce-Co-Fe-O series is no more than 40% and 15%, respectively. Lattice parameters of BaCe0.1CoxFe0.9-xO3-delta gradually increase with cobalt and cerium content, iodine titration experiment revealed that the doping of cerium ions with big radius can keep B-site cobalt and iron ions in low valence state. Oxygen permeation operation showed that oxygen permeation flux of all BaCe0.1CoxFe0.9-xO3-delta membranes gradually increases with testing time in the initial stage, and the time to reach steady state becomes longer with the increase of cobalt content. After reaching permeation steady state, BaCe0.1Co0.4Fe0.5O3-delta exhibits highest oxygen flux amongst BaCe0.1CoxFe0.9-xO3-delta series. (C) 2010 Elsevier Ltd. All rights reserved.
关键词[WOS]: PEROVSKITE-TYPE OXIDES ;  PARTIAL OXIDATION ;  MEMBRANE REACTOR ;  COMPOSITE MEMBRANES ;  PERMEATION ;  METHANE ;  SYNGAS ;  STABILITY ;  CONDUCTIVITY ;  PERFORMANCE
语种: 英语
WOS记录号: WOS:000281104900013
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/141643
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Liaoning Univ Petr & Chem Technol, Dept Mat Sci, Fushun 113001, Liaoning, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China

Recommended Citation:
Li, Qiming,Zhu, Xuefeng,Yang, Weishen. Investigation of structure and oxygen permeability of Ba-Ce-Co-Fe-O system[J]. MATERIALS RESEARCH BULLETIN,2010,45(9):1112-1117.
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