Oxygen permeation through La0.4Sr0.6Co0.2Fe0.8)3-d membrane

Chusheng Chen, C.S. Chen, Zhan-ping Zhang, Guo-sun Jiang, Chuan-gang Fan, Wei Liu, W. Liu, Henricus J.M. Bouwmeester

Research output: Contribution to journalArticleAcademicpeer-review

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Abstract

Dense La0.4Sr0.6Co0.2Fe0.8O3-δ oxygen-permeable membranes of different thickness were prepared by solid-state reaction. The oxygen flux facilitated by an oxygen partial pressure difference across the oxide membrane was measured at elevated temperatures. It is revealed that oxygen permeation flux is entirely controlled by the transport of oxide ions in the bulk of the membrane in the thickness range of 1.25−2.46 mm. When the thickness is decreased to 0.62 mm, it becomes jointly controlled by the oxygen exchange across the gas and solid interfaces. An electrochemical approach is adopted to analyze the thickness dependence of the oxygen flux. It is shown that the interfacial process is more sensitive to the change of temperature, as evidenced by the larger activation energy for the surface oxygen exchange (188.2 ± 2.2 kJ mol-1), than that for the bulk transport (93.7 ± 1.7 kJ mol-1).
Original languageUndefined
Pages (from-to)2797-2800
Number of pages4
JournalChemistry of materials
Volume13
Issue number9
DOIs
Publication statusPublished - 2001

Keywords

  • IR-72265
  • METIS-205566

Cite this

Chen, Chusheng ; Chen, C.S. ; Zhang, Zhan-ping ; Jiang, Guo-sun ; Fan, Chuan-gang ; Liu, Wei ; Liu, W. ; Bouwmeester, Henricus J.M. / Oxygen permeation through La0.4Sr0.6Co0.2Fe0.8)3-d membrane. In: Chemistry of materials. 2001 ; Vol. 13, No. 9. pp. 2797-2800.
@article{f6810f7ede414e8580b93af8108d2601,
title = "Oxygen permeation through La0.4Sr0.6Co0.2Fe0.8)3-d membrane",
abstract = "Dense La0.4Sr0.6Co0.2Fe0.8O3-δ oxygen-permeable membranes of different thickness were prepared by solid-state reaction. The oxygen flux facilitated by an oxygen partial pressure difference across the oxide membrane was measured at elevated temperatures. It is revealed that oxygen permeation flux is entirely controlled by the transport of oxide ions in the bulk of the membrane in the thickness range of 1.25−2.46 mm. When the thickness is decreased to 0.62 mm, it becomes jointly controlled by the oxygen exchange across the gas and solid interfaces. An electrochemical approach is adopted to analyze the thickness dependence of the oxygen flux. It is shown that the interfacial process is more sensitive to the change of temperature, as evidenced by the larger activation energy for the surface oxygen exchange (188.2 ± 2.2 kJ mol-1), than that for the bulk transport (93.7 ± 1.7 kJ mol-1).",
keywords = "IR-72265, METIS-205566",
author = "Chusheng Chen and C.S. Chen and Zhan-ping Zhang and Guo-sun Jiang and Chuan-gang Fan and Wei Liu and W. Liu and Bouwmeester, {Henricus J.M.}",
year = "2001",
doi = "10.1021/cm000809a",
language = "Undefined",
volume = "13",
pages = "2797--2800",
journal = "Chemistry of materials",
issn = "0897-4756",
publisher = "American Chemical Society",
number = "9",

}

Chen, C, Chen, CS, Zhang, Z, Jiang, G, Fan, C, Liu, W, Liu, W & Bouwmeester, HJM 2001, 'Oxygen permeation through La0.4Sr0.6Co0.2Fe0.8)3-d membrane', Chemistry of materials, vol. 13, no. 9, pp. 2797-2800. https://doi.org/10.1021/cm000809a

Oxygen permeation through La0.4Sr0.6Co0.2Fe0.8)3-d membrane. / Chen, Chusheng; Chen, C.S.; Zhang, Zhan-ping; Jiang, Guo-sun; Fan, Chuan-gang; Liu, Wei; Liu, W.; Bouwmeester, Henricus J.M.

In: Chemistry of materials, Vol. 13, No. 9, 2001, p. 2797-2800.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Oxygen permeation through La0.4Sr0.6Co0.2Fe0.8)3-d membrane

AU - Chen, Chusheng

AU - Chen, C.S.

AU - Zhang, Zhan-ping

AU - Jiang, Guo-sun

AU - Fan, Chuan-gang

AU - Liu, Wei

AU - Liu, W.

AU - Bouwmeester, Henricus J.M.

PY - 2001

Y1 - 2001

N2 - Dense La0.4Sr0.6Co0.2Fe0.8O3-δ oxygen-permeable membranes of different thickness were prepared by solid-state reaction. The oxygen flux facilitated by an oxygen partial pressure difference across the oxide membrane was measured at elevated temperatures. It is revealed that oxygen permeation flux is entirely controlled by the transport of oxide ions in the bulk of the membrane in the thickness range of 1.25−2.46 mm. When the thickness is decreased to 0.62 mm, it becomes jointly controlled by the oxygen exchange across the gas and solid interfaces. An electrochemical approach is adopted to analyze the thickness dependence of the oxygen flux. It is shown that the interfacial process is more sensitive to the change of temperature, as evidenced by the larger activation energy for the surface oxygen exchange (188.2 ± 2.2 kJ mol-1), than that for the bulk transport (93.7 ± 1.7 kJ mol-1).

AB - Dense La0.4Sr0.6Co0.2Fe0.8O3-δ oxygen-permeable membranes of different thickness were prepared by solid-state reaction. The oxygen flux facilitated by an oxygen partial pressure difference across the oxide membrane was measured at elevated temperatures. It is revealed that oxygen permeation flux is entirely controlled by the transport of oxide ions in the bulk of the membrane in the thickness range of 1.25−2.46 mm. When the thickness is decreased to 0.62 mm, it becomes jointly controlled by the oxygen exchange across the gas and solid interfaces. An electrochemical approach is adopted to analyze the thickness dependence of the oxygen flux. It is shown that the interfacial process is more sensitive to the change of temperature, as evidenced by the larger activation energy for the surface oxygen exchange (188.2 ± 2.2 kJ mol-1), than that for the bulk transport (93.7 ± 1.7 kJ mol-1).

KW - IR-72265

KW - METIS-205566

U2 - 10.1021/cm000809a

DO - 10.1021/cm000809a

M3 - Article

VL - 13

SP - 2797

EP - 2800

JO - Chemistry of materials

JF - Chemistry of materials

SN - 0897-4756

IS - 9

ER -

Chen C, Chen CS, Zhang Z, Jiang G, Fan C, Liu W et al. Oxygen permeation through La0.4Sr0.6Co0.2Fe0.8)3-d membrane. Chemistry of materials. 2001;13(9):2797-2800. https://doi.org/10.1021/cm000809a