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Oxygen permeability and structural stability of BaCe0.15Fe0.85O3-delta membranes
Zhu, Xuefeng; Cong, You; Yang, Weishen
关键词Oxygen Separation Ceramic Membrane Perovskite Mixed Conductor Structural Stability
刊名JOURNAL OF MEMBRANE SCIENCE
2006-10-20
DOI10.1016/j.memsci.2006.06.010
283期:1-2页:38-44
收录类别SCI
文章类型Article
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
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.
语种英语
WOS记录号WOS:000240844900007
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被引频次:53[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/140347
专题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
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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.
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