Structure and oxygen permeability of a dual-phase membrane

Haihui Wang; Wei Shen Yang; You Cong; Xuefeng Zhu; Y. S. Lin

doi:10.1016/j.memsci.2003.07.003

Structure and oxygen permeability of a dual-phase membrane

Haihui Wang, Wei Shen Yang, You Cong, Xuefeng Zhu, Y. S. Lin

Research output: Contribution to journal › Article › peer-review

50 Scopus citations

Abstract

The dual-phase membrane of La_0.15Sr_0.85Ga _0.3Fe_0.7O_3-δ-Ba_0.5Sr _0.5Fe_0.2Co_0.8O_3-δ (LSGF-BSCF) was prepared successfully. This membrane was characterized with X-ray diffraction (XRD), scanning electron microscopy (SEM) and electron probe micro-analyzer (EPMA). This membrane has a dense dual-phase structure: LSGF being the dense body of this membrane and BSCF as another phase running along the LSGF body. This structure is favorable for the oxygen permeation through the membrane. The oxygen permeation test shows that the oxygen permeation flux of LSGF-BSCF membrane (J_O2=0.45ml/mincm², at 915°C) is much higher than that of LSGF membrane (J_O2=0.05ml/mincm ²). Thickness dependence of oxygen permeation indicates that the oxygen permeation is controlled by the bulk diffusion. Compared to pure BSCF, the dual-phase membrane of LSGF-BSCF is stable in reducing atmosphere.

Original language	English (US)
Pages (from-to)	107-115
Number of pages	9
Journal	Journal of Membrane Science
Volume	224
Issue number	1-2
DOIs	https://doi.org/10.1016/j.memsci.2003.07.003
State	Published - Oct 15 2003
Externally published	Yes

Keywords

Dual-phase
Inorganic membrane
Mixed-conductor
Oxygen separation
Perovskite

ASJC Scopus subject areas

Biochemistry
General Materials Science
Physical and Theoretical Chemistry
Filtration and Separation

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10.1016/j.memsci.2003.07.003

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@article{eebd5ca0a73d4c60862badd6bd4c69bd,

title = "Structure and oxygen permeability of a dual-phase membrane",

abstract = "The dual-phase membrane of La0.15Sr0.85Ga 0.3Fe0.7O3-δ-Ba0.5Sr 0.5Fe0.2Co0.8O3-δ (LSGF-BSCF) was prepared successfully. This membrane was characterized with X-ray diffraction (XRD), scanning electron microscopy (SEM) and electron probe micro-analyzer (EPMA). This membrane has a dense dual-phase structure: LSGF being the dense body of this membrane and BSCF as another phase running along the LSGF body. This structure is favorable for the oxygen permeation through the membrane. The oxygen permeation test shows that the oxygen permeation flux of LSGF-BSCF membrane (JO2=0.45ml/mincm2, at 915°C) is much higher than that of LSGF membrane (JO2=0.05ml/mincm 2). Thickness dependence of oxygen permeation indicates that the oxygen permeation is controlled by the bulk diffusion. Compared to pure BSCF, the dual-phase membrane of LSGF-BSCF is stable in reducing atmosphere.",

keywords = "Dual-phase, Inorganic membrane, Mixed-conductor, Oxygen separation, Perovskite",

author = "Haihui Wang and Yang, {Wei Shen} and You Cong and Xuefeng Zhu and Lin, {Y. S.}",

note = "Funding Information: The authors gratefully acknowledge financial supports from the Ministry of Science and Technology of China (Grant no. 61999022401) and the National Natural Science of Foundation of China (Grant no. 59789201). ",

year = "2003",

month = oct,

day = "15",

doi = "10.1016/j.memsci.2003.07.003",

language = "English (US)",

volume = "224",

pages = "107--115",

journal = "Journal of Membrane Science",

issn = "0376-7388",

publisher = "Elsevier",

number = "1-2",

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TY - JOUR

T1 - Structure and oxygen permeability of a dual-phase membrane

AU - Wang, Haihui

AU - Yang, Wei Shen

AU - Cong, You

AU - Zhu, Xuefeng

AU - Lin, Y. S.

N1 - Funding Information: The authors gratefully acknowledge financial supports from the Ministry of Science and Technology of China (Grant no. 61999022401) and the National Natural Science of Foundation of China (Grant no. 59789201).

PY - 2003/10/15

Y1 - 2003/10/15

N2 - The dual-phase membrane of La0.15Sr0.85Ga 0.3Fe0.7O3-δ-Ba0.5Sr 0.5Fe0.2Co0.8O3-δ (LSGF-BSCF) was prepared successfully. This membrane was characterized with X-ray diffraction (XRD), scanning electron microscopy (SEM) and electron probe micro-analyzer (EPMA). This membrane has a dense dual-phase structure: LSGF being the dense body of this membrane and BSCF as another phase running along the LSGF body. This structure is favorable for the oxygen permeation through the membrane. The oxygen permeation test shows that the oxygen permeation flux of LSGF-BSCF membrane (JO2=0.45ml/mincm2, at 915°C) is much higher than that of LSGF membrane (JO2=0.05ml/mincm 2). Thickness dependence of oxygen permeation indicates that the oxygen permeation is controlled by the bulk diffusion. Compared to pure BSCF, the dual-phase membrane of LSGF-BSCF is stable in reducing atmosphere.

AB - The dual-phase membrane of La0.15Sr0.85Ga 0.3Fe0.7O3-δ-Ba0.5Sr 0.5Fe0.2Co0.8O3-δ (LSGF-BSCF) was prepared successfully. This membrane was characterized with X-ray diffraction (XRD), scanning electron microscopy (SEM) and electron probe micro-analyzer (EPMA). This membrane has a dense dual-phase structure: LSGF being the dense body of this membrane and BSCF as another phase running along the LSGF body. This structure is favorable for the oxygen permeation through the membrane. The oxygen permeation test shows that the oxygen permeation flux of LSGF-BSCF membrane (JO2=0.45ml/mincm2, at 915°C) is much higher than that of LSGF membrane (JO2=0.05ml/mincm 2). Thickness dependence of oxygen permeation indicates that the oxygen permeation is controlled by the bulk diffusion. Compared to pure BSCF, the dual-phase membrane of LSGF-BSCF is stable in reducing atmosphere.

KW - Dual-phase

KW - Inorganic membrane

KW - Mixed-conductor

KW - Oxygen separation

KW - Perovskite

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EP - 115

JO - Journal of Membrane Science

JF - Journal of Membrane Science

IS - 1-2

ER -

Structure and oxygen permeability of a dual-phase membrane

Abstract

Keywords

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