Improvement of oxygen permeation through microchanneled ceramic membranes

Xin Shao; Dehua Dong; Gordon Parkinson; Chun Zhu Li

doi:10.1016/j.memsci.2013.12.025

Improvement of oxygen permeation through microchanneled ceramic membranes

Xin Shao, Dehua Dong, Gordon Parkinson, Chun Zhu Li

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

26 Citations (Scopus)

Abstract

Microchanneled membranes have demonstrated high oxygen permeation fluxes owing to the shortened oxygen permeation distance and the enlarged membrane surface area. In this study, further improvement of the oxygen permeation flux has been attempted through using dual-phase membranes and applying catalysts on the membrane surfaces. Compared with pure La_0.6Sr_0.4Co_0.2Fe_0.8O_3-δ (LSCF) membranes, LSCF-Ce_0.8Gd_0.2O_2-δ (GDC) dual-phase membranes increased oxygen flux by 57% due to the balanced oxygen ionic and electronic conductivities. The open microchannel structure facilitated the coating of catalysts on both sides of the membranes because catalyst can readily be delivered to the membrane surface on the microchannel side through the numerous microchannels. The catalyst increased the oxygen fluxes of both pure LSCF membranes and dual-phase membranes, while it had a larger effect on the dual-phase membranes because its surface reactions play a more significant role in controlling the overall oxygen permeation. Finally, the improvements increased oxygen flux through the microchanneled membranes from 1.4 to 3.8mlcm^-2min^-1 at 950°C, i.e. by a factor of 2.7.

Original language	English
Pages (from-to)	444-450
Number of pages	7
Journal	Journal of Membrane Science
Volume	454
DOIs	https://doi.org/10.1016/j.memsci.2013.12.025
Publication status	Published - 15 Mar 2014
Externally published	Yes

Keywords

Catalyst
Dual-phase
Microchanneled structure
Oxygen permeation membrane

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10.1016/j.memsci.2013.12.025

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title = "Improvement of oxygen permeation through microchanneled ceramic membranes",

abstract = "Microchanneled membranes have demonstrated high oxygen permeation fluxes owing to the shortened oxygen permeation distance and the enlarged membrane surface area. In this study, further improvement of the oxygen permeation flux has been attempted through using dual-phase membranes and applying catalysts on the membrane surfaces. Compared with pure La0.6Sr0.4Co0.2Fe0.8O3-δ (LSCF) membranes, LSCF-Ce0.8Gd0.2O2-δ (GDC) dual-phase membranes increased oxygen flux by 57% due to the balanced oxygen ionic and electronic conductivities. The open microchannel structure facilitated the coating of catalysts on both sides of the membranes because catalyst can readily be delivered to the membrane surface on the microchannel side through the numerous microchannels. The catalyst increased the oxygen fluxes of both pure LSCF membranes and dual-phase membranes, while it had a larger effect on the dual-phase membranes because its surface reactions play a more significant role in controlling the overall oxygen permeation. Finally, the improvements increased oxygen flux through the microchanneled membranes from 1.4 to 3.8mlcm-2min-1 at 950°C, i.e. by a factor of 2.7.",

keywords = "Catalyst, Dual-phase, Microchanneled structure, Oxygen permeation membrane",

author = "Xin Shao and Dehua Dong and Gordon Parkinson and Li, {Chun Zhu}",

note = "Funding Information: This work was financially supported by Australian Research Council Discovery Project ( DP120103317 ), the government of Western Australia via the Centre for Research into Energy for Sustainable Transport (CREST) and Curtin University of Technology through the Curtin Research Fellowship scheme . We also thank for the Curtin Centre for Materials Research for help with XRD characterization and SEM imaging . ",

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doi = "10.1016/j.memsci.2013.12.025",

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journal = "Journal of Membrane Science",

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TY - JOUR

T1 - Improvement of oxygen permeation through microchanneled ceramic membranes

AU - Shao, Xin

AU - Dong, Dehua

AU - Parkinson, Gordon

AU - Li, Chun Zhu

N1 - Funding Information: This work was financially supported by Australian Research Council Discovery Project ( DP120103317 ), the government of Western Australia via the Centre for Research into Energy for Sustainable Transport (CREST) and Curtin University of Technology through the Curtin Research Fellowship scheme . We also thank for the Curtin Centre for Materials Research for help with XRD characterization and SEM imaging .

PY - 2014/3/15

Y1 - 2014/3/15

N2 - Microchanneled membranes have demonstrated high oxygen permeation fluxes owing to the shortened oxygen permeation distance and the enlarged membrane surface area. In this study, further improvement of the oxygen permeation flux has been attempted through using dual-phase membranes and applying catalysts on the membrane surfaces. Compared with pure La0.6Sr0.4Co0.2Fe0.8O3-δ (LSCF) membranes, LSCF-Ce0.8Gd0.2O2-δ (GDC) dual-phase membranes increased oxygen flux by 57% due to the balanced oxygen ionic and electronic conductivities. The open microchannel structure facilitated the coating of catalysts on both sides of the membranes because catalyst can readily be delivered to the membrane surface on the microchannel side through the numerous microchannels. The catalyst increased the oxygen fluxes of both pure LSCF membranes and dual-phase membranes, while it had a larger effect on the dual-phase membranes because its surface reactions play a more significant role in controlling the overall oxygen permeation. Finally, the improvements increased oxygen flux through the microchanneled membranes from 1.4 to 3.8mlcm-2min-1 at 950°C, i.e. by a factor of 2.7.

AB - Microchanneled membranes have demonstrated high oxygen permeation fluxes owing to the shortened oxygen permeation distance and the enlarged membrane surface area. In this study, further improvement of the oxygen permeation flux has been attempted through using dual-phase membranes and applying catalysts on the membrane surfaces. Compared with pure La0.6Sr0.4Co0.2Fe0.8O3-δ (LSCF) membranes, LSCF-Ce0.8Gd0.2O2-δ (GDC) dual-phase membranes increased oxygen flux by 57% due to the balanced oxygen ionic and electronic conductivities. The open microchannel structure facilitated the coating of catalysts on both sides of the membranes because catalyst can readily be delivered to the membrane surface on the microchannel side through the numerous microchannels. The catalyst increased the oxygen fluxes of both pure LSCF membranes and dual-phase membranes, while it had a larger effect on the dual-phase membranes because its surface reactions play a more significant role in controlling the overall oxygen permeation. Finally, the improvements increased oxygen flux through the microchanneled membranes from 1.4 to 3.8mlcm-2min-1 at 950°C, i.e. by a factor of 2.7.

KW - Catalyst

KW - Dual-phase

KW - Microchanneled structure

KW - Oxygen permeation membrane

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JO - Journal of Membrane Science

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ER -

Improvement of oxygen permeation through microchanneled ceramic membranes

Abstract

Keywords

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