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题名: Structural stability and oxygen permeability of cerium lightly doped BaFeO3-delta ceramic membranes
作者: Zhu, Xuefeng;  Wang, Haihui;  Yang, Weishen
关键词: oxygen permeation ;  ceramic membranes ;  stability ;  perovskite
刊名: SOLID STATE IONICS
发表日期: 2006-11-15
DOI: 10.1016/j.ssi.2006.08.027
卷: 177, 期:33-34, 页:2917-2921
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Physical ;  Physics, Condensed Matter
研究领域[WOS]: Chemistry ;  Physics
英文摘要: The structural stability under reducing environment and oxygen permeation fluxes of perovskite-type BaCexCFe1-xO3-delta (0 <= x <= 0.15) ceramic membranes were investigated. The XRD results showed that 5% of cerium doping into the perovskite B-site can make the BaFeO3-delta transform from the hexagonal structure to the cubic structure, and make the structure stable under 10% H-2-Ar mixed gas at 900 degrees C for 1 h, but breaks down after 5 h. Lattice parameters and oxygen non-stoichiometry of the as-prepared and reduced samples were measured. Oxygen permeation fluxes of the membranes were measured between 700 and 950 degrees C. Oxygen permeation during the cooling and heating circles showed that 5% of cerium doping into the perovskite B-site can avoid the phase transformation. The optimum cerium-doped amount on the B-sites was found to be 10%. (c) 2006 Elsevier B.V. All rights reserved.
关键词[WOS]: HOLLOW-FIBER MEMBRANES ;  METHANE CONVERSION ;  IONIC-CONDUCTIVITY ;  SEPARATION ;  TRANSPORT ;  REACTOR ;  OXIDES ;  PERMEATION ;  OXIDATION ;  SYNGAS
语种: 英语
WOS记录号: WOS:000242728100012
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/140084
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.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian, Peoples R China
2.Chinese Acad Sci, Grad Sch, Dalian, Peoples R China

Recommended Citation:
Zhu, Xuefeng,Wang, Haihui,Yang, Weishen. Structural stability and oxygen permeability of cerium lightly doped BaFeO3-delta ceramic membranes[J]. SOLID STATE IONICS,2006,177(33-34):2917-2921.
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