DICP OpenIR
Stability of sulfate doped SrCoO3-delta MIEC membrane
Liu, Yan1,2; Zhu, Xuefeng1; Yang, Weishen1
KeywordMiec Membrane Srcoo3-delta Sulfate Doped Phase Transition Perovskite
Source PublicationJOURNAL OF MEMBRANE SCIENCE
2016-03-01
ISSN0376-7388
DOI10.1016/j.memsci.2015.12.002
Volume501Pages:53-59
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Technology ; Physical Sciences
WOS SubjectEngineering, Chemical ; Polymer Science
WOS Research AreaEngineering ; Polymer Science
WOS KeywordDUAL-PHASE MEMBRANES ; OXYGEN-PERMEABLE MEMBRANE ; PEROVSKITE-TYPE OXIDES ; HOLLOW-FIBER MEMBRANE ; CERAMIC MEMBRANES ; PERMEATION BEHAVIOR ; LOW-TEMPERATURE ; FUEL-CELLS ; STABILIZATION ; SEPARATION
AbstractA sulfate doped SrCoO3-delta (SC) mixed ionic-electronic conducting (MIEC) oxide, SrCo0.97S0.03O3-delta (SCS), was prepared to study the dependence of its stability on the incorporation of sulfate group into perovskite lattice. The high-temperature cubic perovskite phase can be stabilized down to room temperature by replacing 3% of cobalt-sites with sulfur. However, permeation experiments show that oxygen permeation fluxes through SC and SCS membranes experienced similar degradation processes at 850 degrees C. Hysteresis loops of oxygen permeation fluxes appear on the both membranes indicate a phase transition from cubic to hexagonal during cooling/heating circle of oxygen permeation tests. The results of permeation experiments, annealing treatments in an air or helium atmosphere and the EDS analysis show that more SrSO4 particles are enriched on the sweep side surface. A mechanism analysis on the sulfate group migration from the membrane bulk to surfaces was proposed to help understanding the experimental results. It is concluded that the sulfate group can migrate outside of perovskite lattice and reach to the gas-solid interfaces, so the stabilization function of sulfate to the cubic perovskite phase loses easily as the sulfate doped perovskite membrane encountering annealing treatments or oxygen partial pressure gradients. (C) 2015 Elsevier B.V. All rights reserved.
Language英语
WOS IDWOS:000368629100006
PublisherELSEVIER SCIENCE BV
Citation statistics
Cited Times:9[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/171421
Collection中国科学院大连化学物理研究所
Corresponding AuthorZhu, Xuefeng; Yang, Weishen
Affiliation1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, 457 Zhongshan Rd, Dalian 116023, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100039, Peoples R China
Recommended Citation
GB/T 7714
Liu, Yan,Zhu, Xuefeng,Yang, Weishen. Stability of sulfate doped SrCoO3-delta MIEC membrane[J]. JOURNAL OF MEMBRANE SCIENCE,2016,501:53-59.
APA Liu, Yan,Zhu, Xuefeng,&Yang, Weishen.(2016).Stability of sulfate doped SrCoO3-delta MIEC membrane.JOURNAL OF MEMBRANE SCIENCE,501,53-59.
MLA Liu, Yan,et al."Stability of sulfate doped SrCoO3-delta MIEC membrane".JOURNAL OF MEMBRANE SCIENCE 501(2016):53-59.
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