Fabrication of lanthanum-based perovskites membranes on porous alumina hollow fibre (AHF) substrates for oxygen enrichment

Ainun Sailah Sihar, Nur Hidayati Othman, Nur Hashimah Alias, Munawar Zaman Shahruddin, Syed Shatir Asghrar Syed-hassan, Mukhlis A. Rahman, Ahmad Fauzi Ismail, Zhentao Wu

Research output: Contribution to journalArticle

Abstract

In this work, two types of lanthanum-based MIEC perovskite oxides, namely La0.6Sr0.4Co0.2Fe0.8O3-δ (LSCF) and La0.6Sr0.4Co0.2Ni0.8O3-δ (LSCNi), were deposited onto porous alumina hollow fibre (AHF) substrates and used for oxygen enrichment. Such structure was developed to shorten oxygen ion diffusion distances in dense membranes and simultaneously leading to higher oxygen flux. The perovskite oxides were prepared using Pechini sol-gel method and deposited via a vacuum-assisted technique. The deposition of lanthanum-based membranes onto the outer and inner sides of the porous AHF has been facilitated through numerous microchannels in the AHF substrates. The effects of operating temperature and argon sweep gas flowrate on oxygen permeation flux of lanthanum-based AHF membrane were investigated. The results revealed that the oxygen permeation flux of LSCF-AHF and LSCNi-AHF increased with operating temperatures due to the improvement of bulk diffusion and surface exchange properties after the lanthanum-based perovskite deposition. Higher oxygen flux was observed for LSCNi-AHF as LSCNi possessed balanced oxygen ionic and electronic conductivities as compared to LSCF membranes. Benefitting from improved oxygen activation and vacancy generation properties after Ni substitution into the B-site ion of LSC perovskite, a dramatic increased oxygen fluxes up to 4.5 mL/min·cm2 was observed at 950 °C. The present work demonstrated a feasible method for fabricating oxygen transport membrane (OTM) using porous AHF substrates.
Original languageEnglish
Pages (from-to)13086-13093
Number of pages8
JournalCeramics International
Volume45
Issue number10
Early online date31 Mar 2019
DOIs
Publication statusPublished - 1 Jul 2019

Fingerprint

Lanthanum
Aluminum Oxide
Alumina
Oxygen
Membranes
Fabrication
Fibers
Substrates
Perovskite
Fluxes
Permeation
Oxides
Ions
Argon
Microchannels
Sol-gel process
Vacancies
Substitution reactions
Gases
Chemical activation

Bibliographical note

© 2019, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/

Keywords

  • Alumina hollow fibre
  • LSCF
  • MIEC perovskites
  • Oxygen enrichment
  • Oxygen permeation

Cite this

Sihar, A. S., Othman, N. H., Alias, N. H., Shahruddin, M. Z., Asghrar Syed-hassan, S. S., Rahman, M. A., ... Wu, Z. (2019). Fabrication of lanthanum-based perovskites membranes on porous alumina hollow fibre (AHF) substrates for oxygen enrichment. Ceramics International, 45(10), 13086-13093. https://doi.org/10.1016/j.ceramint.2019.03.242
Sihar, Ainun Sailah ; Othman, Nur Hidayati ; Alias, Nur Hashimah ; Shahruddin, Munawar Zaman ; Asghrar Syed-hassan, Syed Shatir ; Rahman, Mukhlis A. ; Ismail, Ahmad Fauzi ; Wu, Zhentao. / Fabrication of lanthanum-based perovskites membranes on porous alumina hollow fibre (AHF) substrates for oxygen enrichment. In: Ceramics International. 2019 ; Vol. 45, No. 10. pp. 13086-13093.
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Sihar, AS, Othman, NH, Alias, NH, Shahruddin, MZ, Asghrar Syed-hassan, SS, Rahman, MA, Ismail, AF & Wu, Z 2019, 'Fabrication of lanthanum-based perovskites membranes on porous alumina hollow fibre (AHF) substrates for oxygen enrichment', Ceramics International, vol. 45, no. 10, pp. 13086-13093. https://doi.org/10.1016/j.ceramint.2019.03.242

Fabrication of lanthanum-based perovskites membranes on porous alumina hollow fibre (AHF) substrates for oxygen enrichment. / Sihar, Ainun Sailah; Othman, Nur Hidayati; Alias, Nur Hashimah; Shahruddin, Munawar Zaman; Asghrar Syed-hassan, Syed Shatir; Rahman, Mukhlis A.; Ismail, Ahmad Fauzi; Wu, Zhentao.

In: Ceramics International, Vol. 45, No. 10, 01.07.2019, p. 13086-13093.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Fabrication of lanthanum-based perovskites membranes on porous alumina hollow fibre (AHF) substrates for oxygen enrichment

AU - Sihar, Ainun Sailah

AU - Othman, Nur Hidayati

AU - Alias, Nur Hashimah

AU - Shahruddin, Munawar Zaman

AU - Asghrar Syed-hassan, Syed Shatir

AU - Rahman, Mukhlis A.

AU - Ismail, Ahmad Fauzi

AU - Wu, Zhentao

N1 - © 2019, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/

PY - 2019/7/1

Y1 - 2019/7/1

N2 - In this work, two types of lanthanum-based MIEC perovskite oxides, namely La0.6Sr0.4Co0.2Fe0.8O3-δ (LSCF) and La0.6Sr0.4Co0.2Ni0.8O3-δ (LSCNi), were deposited onto porous alumina hollow fibre (AHF) substrates and used for oxygen enrichment. Such structure was developed to shorten oxygen ion diffusion distances in dense membranes and simultaneously leading to higher oxygen flux. The perovskite oxides were prepared using Pechini sol-gel method and deposited via a vacuum-assisted technique. The deposition of lanthanum-based membranes onto the outer and inner sides of the porous AHF has been facilitated through numerous microchannels in the AHF substrates. The effects of operating temperature and argon sweep gas flowrate on oxygen permeation flux of lanthanum-based AHF membrane were investigated. The results revealed that the oxygen permeation flux of LSCF-AHF and LSCNi-AHF increased with operating temperatures due to the improvement of bulk diffusion and surface exchange properties after the lanthanum-based perovskite deposition. Higher oxygen flux was observed for LSCNi-AHF as LSCNi possessed balanced oxygen ionic and electronic conductivities as compared to LSCF membranes. Benefitting from improved oxygen activation and vacancy generation properties after Ni substitution into the B-site ion of LSC perovskite, a dramatic increased oxygen fluxes up to 4.5 mL/min·cm2 was observed at 950 °C. The present work demonstrated a feasible method for fabricating oxygen transport membrane (OTM) using porous AHF substrates.

AB - In this work, two types of lanthanum-based MIEC perovskite oxides, namely La0.6Sr0.4Co0.2Fe0.8O3-δ (LSCF) and La0.6Sr0.4Co0.2Ni0.8O3-δ (LSCNi), were deposited onto porous alumina hollow fibre (AHF) substrates and used for oxygen enrichment. Such structure was developed to shorten oxygen ion diffusion distances in dense membranes and simultaneously leading to higher oxygen flux. The perovskite oxides were prepared using Pechini sol-gel method and deposited via a vacuum-assisted technique. The deposition of lanthanum-based membranes onto the outer and inner sides of the porous AHF has been facilitated through numerous microchannels in the AHF substrates. The effects of operating temperature and argon sweep gas flowrate on oxygen permeation flux of lanthanum-based AHF membrane were investigated. The results revealed that the oxygen permeation flux of LSCF-AHF and LSCNi-AHF increased with operating temperatures due to the improvement of bulk diffusion and surface exchange properties after the lanthanum-based perovskite deposition. Higher oxygen flux was observed for LSCNi-AHF as LSCNi possessed balanced oxygen ionic and electronic conductivities as compared to LSCF membranes. Benefitting from improved oxygen activation and vacancy generation properties after Ni substitution into the B-site ion of LSC perovskite, a dramatic increased oxygen fluxes up to 4.5 mL/min·cm2 was observed at 950 °C. The present work demonstrated a feasible method for fabricating oxygen transport membrane (OTM) using porous AHF substrates.

KW - Alumina hollow fibre

KW - LSCF

KW - MIEC perovskites

KW - Oxygen enrichment

KW - Oxygen permeation

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JO - Ceramics International

JF - Ceramics International

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