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学科主题: 物理化学
题名: Unsteady-state permeation and surface exchange of dual-phase membranes
作者: Zhu, Xuefeng1;  Liu, Huanyin1;  Li, Qiming1;  Cong, You1;  Yang, Weishen1
通讯作者: 杨维慎
关键词: Unsteady state ;  Oxygen exchange ;  Dual-phase membrane ;  Porous layer ;  Oxygen permeation
刊名: SOLID STATE IONICS
发表日期: 2011-03-11
DOI: 10.1016/j.ssi.2011.01.005
卷: 185, 期:1, 页:27-31
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 ;  Physical Sciences
类目[WOS]: Chemistry, Physical ;  Physics, Condensed Matter
摘要: Unsteady-state permeation and surface exchange of dual-phase membranes
研究领域[WOS]: Chemistry ;  Physics
英文摘要: Unsteady-state permeation in the initial stage was investigated on ceria-based dual-phase membranes by coating La(0.6)Sr(0.4)CoO(3-delta) (LSC) active porous layers onto the surface of membranes. It is found that the unsteady period is greatly influenced by the active porous layer. The membrane with LSC porous layers coated on both sides reaches a steady state immediately while starting the permeation testing. However, the membranes without LSC porous layers coated on one side or both sides need several to tens of hours to achieve the steady state. The active porous layer can improve the oxygen flux and decrease the permeation activation energy, and the membrane with coating on both sides had the highest flux and lowest E(a). In addition, the active porous layer can eliminate oxygen exchange limitations on the membrane surface. The changes of surface microstructures are suggested as the cause of unsteady-state permeation. (c) 2011 Elsevier B.V. All rights reserved.
关键词[WOS]: HOLLOW-FIBER MEMBRANES ;  PARTIAL OXIDATION ;  OXYGEN PERMEATION ;  COMPOSITE MEMBRANES ;  PEROVSKITE MEMBRANES ;  CERAMIC MEMBRANES ;  DENSE PEROVSKITE ;  METHANE ;  SYNGAS ;  REACTORS
语种: 英语
WOS记录号: WOS:000289177600005
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/115184
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

Recommended Citation:
Zhu, Xuefeng,Liu, Huanyin,Li, Qiming,et al. Unsteady-state permeation and surface exchange of dual-phase membranes[J]. SOLID STATE IONICS,2011,185(1):27-31.
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