Comparative investigation of dual-phase membranes containing cobalt and iron-based mixed conducting perovskite for oxygen permeation

	Comparative investigation of dual-phase membranes containing cobalt and iron-based mixed conducting perovskite for oxygen permeation
	Li, Hongbo; Zhu, Xuefeng; Liu, Yan; Wang, Weiping; Yang, Weishen
刊名	journal of membrane science
	2014-07-15
卷号	462 页码:170-177
关键词	Dual-phase membranes Oxygen permeation CO2 Perovskite Fluorite
通讯作者	朱雪峰 ; 杨维慎
产权排序	待补充
合作状况	英
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.
学科主题	物理化学
WOS标题词	science & technology ; technology ; physical sciences
类目[WOS]	engineering, chemical ; polymer science
研究领域[WOS]	engineering ; polymer science
关键词[WOS]	hollow-fiber membrane ; ceramic membranes ; composite membranes ; ionic-conductivity ; partial oxidation ; intermediate temperatures ; electrical-properties ; transport properties ; methane conversion ; permeability
收录类别	SCI
资助信息	1，1
原文出处	177
语种	英语
WOS记录号	WOS:000334509900019
公开日期	2014-09-11
内容类型	期刊论文
源URL	[http://159.226.238.44/handle/321008/119692]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
作者单位	Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
推荐引用方式 GB/T 7714	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.
APA	Li, Hongbo,Zhu, Xuefeng,Liu, Yan,Wang, Weiping,&Yang, Weishen.(2014).Comparative investigation of dual-phase membranes containing cobalt and iron-based mixed conducting perovskite for oxygen permeation.journal of membrane science,462,170-177.
MLA	Li, Hongbo,et al."Comparative investigation of dual-phase membranes containing cobalt and iron-based mixed conducting perovskite for oxygen permeation".journal of membrane science 462(2014):170-177.