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题名: Mixed-conducting perovskite-type SrxBi1-xFeO3_delta oxygen-permeating membranes
作者: Shao, ZP;  Cong, Y;  Xiong, GX;  Sheng, SS;  Yang, WS
关键词: oxygen membrane ;  SrxBi1-xFeO3-delta ;  crystal structure ;  phase stability ;  permeation flux
刊名: SCIENCE IN CHINA SERIES B-CHEMISTRY
发表日期: 2000-08-01
卷: 43, 期:4, 页:421-427
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Multidisciplinary
研究领域[WOS]: Chemistry
英文摘要: SrxBi1-xFeO3-delta (SBF) series mixed conductors were synthesized using standard ceramic method. The properties of such materials were characterized by XRD, O-2-TPD techniques. Abnormal crystal phenomena were found and explained and correlated with the oxygen permeation results. By analysis of the critical radius (r(c)), the degree of openness of the lattice (F-v) and the average metal-oxygen bonding energy of the perovskite lattice (ABE), it was proposed that the oxygen permeation flux is determined mainly by the oxygen diffusion rate in bulk when 1-x less than or equal to 0.5, and by the concentration of oxygen vacancy when 1-x greater than or equal to 0.5. The stability of Sr0.5Bi0.5FeO3-delta was also investigated, and the high stability of it was attributed to the stable BO6 octahedra.
关键词[WOS]: SOLID ELECTROLYTES ;  PARTIAL OXIDATION ;  FUEL-CELLS ;  REACTORS ;  METHANE
语种: 英语
WOS记录号: WOS:000089289400010
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/138691
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 116023, Peoples R China

Recommended Citation:
Shao, ZP,Cong, Y,Xiong, GX,et al. Mixed-conducting perovskite-type SrxBi1-xFeO3_delta oxygen-permeating membranes[J]. SCIENCE IN CHINA SERIES B-CHEMISTRY,2000,43(4):421-427.
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