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题名: Oxygen permeability and stability of BaCe0.1Co0.4Fe0.5O3-delta oxygen permeable membrane
作者: Li, Qiming1, 2, 3;  Zhu, Xuefeng1;  He, Yufeng1;  Yang, Weishen1
关键词: BaCe0.1Co0.4Fe0.5O3-delta ;  Perovskite oxides ;  Oxygen separation ;  Stability
刊名: SEPARATION AND PURIFICATION TECHNOLOGY
发表日期: 2010-05-28
DOI: 10.1016/j.seppur.2009.09.005
卷: 73, 期:1, 页:38-43
收录类别: SCI ;  ISTP
文章类型: Article
WOS标题词: Science & Technology ;  Technology
类目[WOS]: Engineering, Chemical
研究领域[WOS]: Engineering
英文摘要: BaCe0.1Co0.4Fe0.5O3-delta, a new mixed ionic-electronic conducting (MIEC) perovskite oxide, was successfully synthesized, which has high oxygen permeability and excellent structural stability. Through the XRD characterization, it was shown that only if the amount of cobalt is no more than 40%, pure perovskite phase can be obtained. Oxygen permeation flux of BaCe0.1Co0.4Fe0.5O3-delta permeable membrane reaches at 1.35 ml min(-1) cm(-2) at 950 degrees C with membrane thickness of 1 mm. In oxygen permeation operation of 270 h at 800 degrees C and 750 degrees C, no degradation of oxygen permeation flux was found. An increasing process was observed in the initial oxygen permeation of BaCe0.1Co0.4Fe0.5O3-delta which took about 40 h to reach steady state. If the thickness of the membrane is thicker than 0.7 mm, bulk diffusion is the rate-determining step of oxygen permeation. And if its thickness is thinner than 0.7 mm, oxygen permeation process is mainly controlled by surface exchange mechanism. (C) 2009 Elsevier B.V. All rights reserved.
关键词[WOS]: PEROVSKITE-TYPE OXIDES ;  MIXED-CONDUCTING OXIDES ;  PARTIAL OXIDATION ;  SURFACE EXCHANGE ;  TRANSPORT-PROPERTIES ;  CERAMIC MEMBRANES ;  PERMEATION ;  METHANE ;  SYNGAS ;  REACTORS
语种: 英语
WOS记录号: WOS:000278721700008
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/142104
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
2.Chinese Acad Sci, Grad Sch, Beijing, Peoples R China
3.Liaoning Univ Petr Chem Technol, Sch Petrochem Engn, Fushun Liaoning 113001, Peoples R China

Recommended Citation:
Li, Qiming,Zhu, Xuefeng,He, Yufeng,et al. Oxygen permeability and stability of BaCe0.1Co0.4Fe0.5O3-delta oxygen permeable membrane[J]. SEPARATION AND PURIFICATION TECHNOLOGY,2010,73(1):38-43.
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