Oxygen permeability and structural stability of BaCe0.15Fe0.85O3-delta membranes

	Oxygen permeability and structural stability of BaCe0.15Fe0.85O3-delta membranes
	Zhu, Xuefeng ; Cong, You ; Yang, Weishen
刊名	journal of membrane science
	2006-10-20
卷号	283 期号:1-2 页码:38-44
关键词	oxygen separation ceramic membrane perovskite mixed conductor structural stability
英文摘要	cobalt-free bacexfe1-xo3-delta (x = 0.15-0.85) membranes have both high oxygen permeation flux and high structure stability even in reducing atmosphere at high temperature. the oxygen flux of bace0.15fe0.85o3-delta (bcf1585) membrane reached at 0.5 ml/min cm(2) at 900 degrees c with a thickness of 1.4 mm. oxygen permeation results showed that oxygen permeation controlling step mainly was oxygen ion diffusion in the membrane bulk if the membrane thicker than 1.0 mm, and mainly was surface oxygen exchange if the membrane thinner than 0.78 mm. ba0.5sr0.5co0.8fe0.2o3-delta (bscf) porous layer coated on the membrane surfaces could effectively accelerate the surface oxygen exchange rate, thus greatly improve the oxygen permeability of the membrane. in some cases, the oxygen permeation flux of the membrane coated with bscf was even two times higher than that of the membrane without coating. perovskite structure of bcf1585 was still maintained at 950 degrees c even after it was exposed to 5% h-2 + ar mixture gas for 1 h. (c) 2006 elsevier b.v. all rights reserved.
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]	perovskite-type oxides ; dense ceramic membranes ; partial oxidation ; methane conversion ; ionic-conductivity ; permeation ; syngas ; reactor ; fe ; performance
收录类别	SCI
语种	英语
WOS记录号	WOS:000240844900007
公开日期	2015-11-17
内容类型	期刊论文
源URL	[http://159.226.238.44/handle/321008/140347]
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	1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China 2.Chinese Acad Sci, Grad Sch, Dalian 116023, Peoples R China
推荐引用方式 GB/T 7714	Zhu, Xuefeng,Cong, You,Yang, Weishen. Oxygen permeability and structural stability of BaCe0.15Fe0.85O3-delta membranes[J]. journal of membrane science,2006,283(1-2):38-44.
APA	Zhu, Xuefeng,Cong, You,&Yang, Weishen.(2006).Oxygen permeability and structural stability of BaCe0.15Fe0.85O3-delta membranes.journal of membrane science,283(1-2),38-44.
MLA	Zhu, Xuefeng,et al."Oxygen permeability and structural stability of BaCe0.15Fe0.85O3-delta membranes".journal of membrane science 283.1-2(2006):38-44.