DICP OpenIR
Oxygen permeability and structural stability of BaCe0.15Fe0.85O3-delta membranes
Zhu, Xuefeng; Cong, You; Yang, Weishen
KeywordOxygen Separation Ceramic Membrane Perovskite Mixed Conductor Structural Stability
Source PublicationJOURNAL OF MEMBRANE SCIENCE
2006-10-20
DOI10.1016/j.memsci.2006.06.010
Volume283Issue:1-2Pages:38-44
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Technology ; Physical Sciences
WOS SubjectEngineering, Chemical ; Polymer Science
WOS Research AreaEngineering ; Polymer Science
WOS KeywordPEROVSKITE-TYPE OXIDES ; DENSE CERAMIC MEMBRANES ; PARTIAL OXIDATION ; METHANE CONVERSION ; IONIC-CONDUCTIVITY ; PERMEATION ; SYNGAS ; REACTOR ; FE ; PERFORMANCE
AbstractCobalt-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.
Language英语
WOS IDWOS:000240844900007
Citation statistics
Cited Times:59[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/140347
Collection中国科学院大连化学物理研究所
Affiliation1.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
Recommended Citation
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.
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