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题名: Ce0.85Sm0.15O1.925-Sm0.6Sr0.4Al0.3Fe0.7O3 dual-phase membranes: One-pot synthesis and stability in a CO2 atmosphere
作者: Zhu, Xuefeng1;  Liu, Yan1;  Cong, You1;  Yang, Weishen1
关键词: Dual-phase membrane ;  Oxygen permeation ;  Synthesis method ;  CO2 ;  Stability
刊名: SOLID STATE IONICS
发表日期: 2013-12-15
DOI: 10.1016/j.ssi.2013.08.040
卷: 253, 页:57-63
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Physical ;  Physics, Condensed Matter
研究领域[WOS]: Chemistry ;  Physics
英文摘要: As alternatives of single-phase mixed conducting materials, dual-phase materials have been suggested as candidates for application as oxygen separation membranes, since it is difficult to meet all the requirements in a single-phase membrane material. The influence of synthetic methods on the performance of the 75 wt.%Ce0.85Sm0.15O1.925-25 wt.%Sm0.6Sr0.4Al0.3Fe0.7O3 (SDC-SSAF) dual-phase membranes has been investigated. Three one-pot methods, i.e. the solid state reaction (SSR), EDTA-citrate complex (EC) and co-precipitation (CP) methods, were used to prepare the SDC-SSAF powder. The structure, surface morphologies, electrical conductivity, oxygen permeation, and stability in a CO2 atmosphere were investigated. It was found that the membrane derived from the SSR method shows the highest oxygen permeation flux and total conductivity. The significant differences between the performances of the dual-phase membrane derived from the different methods relates to the different microstructures developed during membrane preparation, which further influences the formation of a continuous electronic Conduction network across the membranes. The stability of the dual-phase membrane was studied by treating the membrane materials under a CO2 atmosphere and by sweeping the membrane with pure CO2. The results show that the membrane is CO2-stable and is potentially integrated with the oxyfuel process for CO2 capture. (C) 2013 Elsevier B.V. All rights reserved.
关键词[WOS]: HOLLOW-FIBER MEMBRANE ;  OXYGEN-PERMEATION ;  COMPOSITE MEMBRANES ;  ELECTRICAL-CONDUCTIVITY ;  CERAMIC MICROSTRUCTURE ;  PEROVSKITE MEMBRANES ;  IONIC-CONDUCTIVITY ;  PERMEABILITY ;  SEPARATION ;  CAPTURE
语种: 英语
WOS记录号: WOS:000329478400009
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/137597
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, Yan,Cong, You,et al. Ce0.85Sm0.15O1.925-Sm0.6Sr0.4Al0.3Fe0.7O3 dual-phase membranes: One-pot synthesis and stability in a CO2 atmosphere[J]. SOLID STATE IONICS,2013,253:57-63.
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