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学科主题: 物理化学
题名: Comparative investigation of dual-phase membranes containing cobalt and iron-based mixed conducting perovskite for oxygen permeation
作者: Li, Hongbo1;  Zhu, Xuefeng1;  Liu, Yan1;  Wang, Weiping1;  Yang, Weishen1
通讯作者: 朱雪峰 ;  杨维慎
关键词: Dual-phase membranes ;  Oxygen permeation ;  CO2 ;  Perovskite ;  Fluorite
刊名: JOURNAL OF MEMBRANE SCIENCE
发表日期: 2014-07-15
DOI: 10.1016/j.memsci.2014.03.047
卷: 462, 页:170-177
收录类别: SCI
合作性质: 
文章类型: Article
部门归属: 5
项目归属: 504
产权排名: 待补充
WOS标题词: Science & Technology ;  Technology ;  Physical Sciences
类目[WOS]: Engineering, Chemical ;  Polymer Science
资助者: 1,1
研究领域[WOS]: Engineering ;  Polymer Science
英文摘要: Dual-phase membranes made of fluorite-type ionic conductors and perovskite-type mixed ionic-electronic conductors (MIEC) have attracted wide attentions in recent years. Here, we report dual-phase membranes, which are made of a ceria-based oxygen ionic conducting oxide (Ce0.8Sm0.2O1.9) and Ca-doped MIEC perovskite oxides (Sm0.6Ca0.4CoO3 (delta) and Sm0.6Ca0.4FeO3 (delta)), and show high structural stability and permeation fluxes. The cobalt- and iron-containing dual-phase membranes were comparatively investigated to find the dependence of the dual-phase membrane properties, such as membrane microstructure, conductivity, oxygen flux as well as stability under a CO2 environment, on B-site elements (Co and Fe) of perovskite phase. It is found that the weight ratio of Sm0.6Ca0.4CoO3-delta, phase should be no less than 33 wt%; otherwise, the electronic conductivity of the corresponding dual-phase membranes is insufficient for oxygen permeation. However, a lower weight ratio (25 wt%) of Sm0.6Ca0.4FeO3-delta phase offers sufficient electronic conductivities for oxygen permeation through the dual-phase membranes. The significant difference in the minimum weight ratio of the two perovskite phases in dual-phase membranes results from the different microstructures developed during the high-temperature sintering process. All the dual-phase membranes are stable under CO2 sweep and show high oxygen permeation flux up to 0.55 mL cm(-2) min(-1) at 950 degrees C through 0.5 mm thick membranes. (C) 2014 Elsevier B.V. All rights reserved.
关键词[WOS]: HOLLOW-FIBER MEMBRANE ;  CERAMIC MEMBRANES ;  COMPOSITE MEMBRANES ;  IONIC-CONDUCTIVITY ;  PARTIAL OXIDATION ;  INTERMEDIATE TEMPERATURES ;  ELECTRICAL-PROPERTIES ;  TRANSPORT PROPERTIES ;  METHANE CONVERSION ;  PERMEABILITY
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000334509900019
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/119692
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

Recommended Citation:
Li, Hongbo,Zhu, Xuefeng,Liu, Yan,et al. Comparative investigation of dual-phase membranes containing cobalt and iron-based mixed conducting perovskite for oxygen permeation[J]. JOURNAL OF MEMBRANE SCIENCE,2014,462:170-177.
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