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学科主题: 物理化学
题名: Permeation model and experimental investigation of mixed conducting membranes
作者: Zhu, Xuefeng1;  Liu, Huanying1;  Cong, You1;  Yang, Weishen1
通讯作者: 朱雪峰 ;  杨维慎
关键词: interfacial exchange ;  bulk diffusion ;  MIEC membrane ;  oxygen permeation ;  distribution of resistances
刊名: AICHE JOURNAL
发表日期: 2012-06-01
DOI: 10.1002/aic.12710
卷: 58, 期:6, 页:1744-1754
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 simple oxygen permeation model was developed based on the theoretical analysis of the role of interfaces of mixed conducting membranes. The developed model equations contain three resistance constants, which can be determined by correlating oxygen permeation flux to oxygen partial pressure on each side. A series of experimental measurements of oxygen fluxes of Ba0.5Sr0.5Co0.8Fe0.2O3-d membranes over a wide range of temperature and oxygen partial pressures were tested for the regression of three resistance constants with good correlation (R > 0.997). With this model, the interfacial exchange resistances of each side can be well distinguished from the bulk-diffusion resistance under a wide-temperature range. The kinetics parameters, including interfacial exchange coefficients on each side and ionic diffusion coefficient, can be obtained through the three resistance constants. Parametric studies can predict the influences of membrane thickness, oxygen partial pressures on oxygen flux, distribution of permeation resistances, and characteristic thickness. (C) 2011 American Institute of Chemical Engineers AIChE J, 58: 17441754, 2012
关键词[WOS]: OXYGEN PERMEABLE MEMBRANE ;  SURFACE EXCHANGE KINETICS ;  PEROVSKITE-TYPE OXIDES ;  BA0.5SR0.5CO0.8FE0.2O3-DELTA ;  SEPARATION ;  STABILITY ;  TRANSPORT ;  PERFORMANCE ;  DIFFUSION ;  BEHAVIOR
语种: 英语
WOS记录号: WOS:000303595500009
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/117918
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, Huanying,Cong, You,et al. Permeation model and experimental investigation of mixed conducting membranes[J]. AICHE JOURNAL,2012,58(6):1744-1754.
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