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题名: Oxygen permeability and structural stability of Zr-doped oxygen-permeable Ba0.5Sr0.5Co0.8Fe0.2O3-delta membrane
作者: Lu, H;  Deng, ZQ;  Tong, JH;  Yang, WS
关键词: ceramics ;  membrane ;  oxygen permeability ;  crystal structure ;  stability
刊名: MATERIALS LETTERS
发表日期: 2005-08-01
DOI: 10.1016/j.matlet.2005.03.004
卷: 59, 期:18, 页:2285-2288
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Technology ;  Physical Sciences
类目[WOS]: Materials Science, Multidisciplinary ;  Physics, Applied
研究领域[WOS]: Materials Science ;  Physics
英文摘要: Oxygen-permeable ceramic membrane materials of Ba0.5Sr0.5Co0.8Fe0.2O3-delta (BSCFO) and Fe-substituted partially Ba0.5Sr0.5Co0.8Fe0.1Zr0.1O3-delta (BSCFZO) were synthesized by solid state reaction method. The BSCFO material possess purely cubic perovskite structure, while minor impurity phase (Ba,Sr)ZrO3 exists in the perovskite-type BSCFZO material. Oxygen permeability of these dense membrane disks was measured at different temperatures (973-1123 K). The reduced oxygen permeability of BSCFZO was resulted from the decrease of the oxygen vacancy concentration and ionic conductivity due to the dissolution of Zr4+ in the B-sites of BSCFO. However, good stability of oxygen permeation of BSCFZO membrane was achieved at the temperature lower than 1123 K. Structural stability of the BSCFZO material was studied by the high temperature XRD technique, which demonstrated that its stability was significantly improved when the Fe ions in the B-sites of BSCFO were substituted partially by Zi(4+) ions. (c) 2005 Elsevier B.V. All rights reserved.
关键词[WOS]: CERAMIC MEMBRANE ;  PERMEATION ;  SRCO0.4FE0.6O3-DELTA ;  CONDUCTIVITY ;  DIFFUSION ;  METHANE ;  OXIDES
语种: 英语
WOS记录号: WOS:000229817100010
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/139680
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:
Lu, H,Deng, ZQ,Tong, JH,et al. Oxygen permeability and structural stability of Zr-doped oxygen-permeable Ba0.5Sr0.5Co0.8Fe0.2O3-delta membrane[J]. MATERIALS LETTERS,2005,59(18):2285-2288.
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