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题名: Composite membrane based on ionic conductor and mixed conductor for oxygen permeation
作者: Zhu, Xuefeng1;  Yang, Weishen1
通讯作者: 杨维慎
关键词: composite membrane ;  ceria ;  oxygen separation ;  ceramic membrane ;  syngas
刊名: AICHE JOURNAL
发表日期: 2008-03-01
DOI: 10.1002/aic.11410
卷: 54, 期:3, 页:665-672
收录类别: SCI
文章类型: Article
部门归属: 5
项目归属: 504
产权排名: 1;1
WOS标题词: Science & Technology ;  Technology
类目[WOS]: Engineering, Chemical
研究领域[WOS]: Engineering
英文摘要: A composite membrane, which comprises of one fluorite oxide phase (Ce0.8Gd0.2O1.9) for oxygen ionic transport and one perovskite oxide phase (Gd0.2Sr0.8FeO3-delta) for both oxygen ionic and electronic transport, was investigated. XRD results revealed that the two oxides are compatible and showed good oxygen permeation stability at 950 C (more than 1100 h). Oxygen flux of the composite membrane was two times higher than that of the Gd0.2Sr0.8FeO3-delta mixed conducting membrane at the same conditions. At steady state, oxygen flux of a 0.5 mm membrane was 0.80 ml/(cm(2) min) under oxygen partial pressure gradient of air/He and similar to 5.0 ml/(cm(2) min) for syngas production at 950 degrees C, respectively. After similar to 440 h operation under syngas conditions, SEM analysis revealed that the syngas side of the membrane still kept dense and the EDX showed the transfer of elements occurred in the depth of a few microns. (c) 2008 American Institute of Chemical Engineers.
关键词[WOS]: DENSE CERAMIC MEMBRANES ;  PEROVSKITE-TYPE OXIDES ;  PARTIAL OXIDATION ;  METHANE CONVERSION ;  SYNGAS ;  PERMEABILITY ;  TRANSPORT ;  REACTORS ;  GAS
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000253345300008
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/101027
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 Catalys, Dalian 116023, Peoples R China

Recommended Citation:
Zhu, Xuefeng,Yang, Weishen. Composite membrane based on ionic conductor and mixed conductor for oxygen permeation[J]. AICHE JOURNAL,2008,54(3):665-672.
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