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A novel cobalt-free, CO2-stable, and reduction-tolerant dual-phase oxygen-permeable membrane

Journal Article


Abstract


  • A novel CO2-stable and reduction-tolerant Ce0.8Sm0.2O2−δ–La0.9Sr0.1FeO3−δ (SDC–LSF) dense dual-phase oxygen-permeable membrane was designed and evaluated in this work. Homogeneous SDC–LSF composite powders for membrane fabrication were synthesized via a one-pot combustion method. The chemical compatibility and ion interdiffusion behavior between the fluorite phase SDC and perovskite phase LSF during the synthesis process was studied. The oxygen permeation flux through the dense dual-phase composite membranes was evaluated and found to be highly dependent on the volume ratio of SDC and LSF. The SDC–LSF membrane with a volume ratio of 7:3 (SDC70–LSF30) possessed the highest permeation flux, achieving 6.42 × 10-7 mol·cm–2·s–1 under an air/CO gradient at 900 °C for a 1.1-mm-thick membrane. Especially, the membrane performance showed excellent durability and operated stably without any degradation at 900 °C for 450 h with helium, CO2, or CO as the sweep gas. The present results demonstrate that a SDC70–LSF30 dual-phase membrane is a promising chemically stable device for oxygen production and CO2 capture with sufficiently high oxygen permeation flux.

UOW Authors


  •   Wang, Zhongtao (external author)
  •   Sun, Wenping
  •   Zhu, Zhiwen (external author)
  •   Liu, Tong (external author)
  •   Liu, Wei (external author)

Publication Date


  • 2013

Geographic Focus


Citation


  • Wang, Z., Sun, W., Zhu, Z., Liu, T. & Liu, W. (2013). A novel cobalt-free, CO2-stable, and reduction-tolerant dual-phase oxygen-permeable membrane. ACS Applied Materials and Interfaces, 5 (21), 11038-11043.

Scopus Eid


  • 2-s2.0-84887587189

Has Global Citation Frequency


Number Of Pages


  • 5

Start Page


  • 11038

End Page


  • 11043

Volume


  • 5

Issue


  • 21

Place Of Publication


  • United States

Abstract


  • A novel CO2-stable and reduction-tolerant Ce0.8Sm0.2O2−δ–La0.9Sr0.1FeO3−δ (SDC–LSF) dense dual-phase oxygen-permeable membrane was designed and evaluated in this work. Homogeneous SDC–LSF composite powders for membrane fabrication were synthesized via a one-pot combustion method. The chemical compatibility and ion interdiffusion behavior between the fluorite phase SDC and perovskite phase LSF during the synthesis process was studied. The oxygen permeation flux through the dense dual-phase composite membranes was evaluated and found to be highly dependent on the volume ratio of SDC and LSF. The SDC–LSF membrane with a volume ratio of 7:3 (SDC70–LSF30) possessed the highest permeation flux, achieving 6.42 × 10-7 mol·cm–2·s–1 under an air/CO gradient at 900 °C for a 1.1-mm-thick membrane. Especially, the membrane performance showed excellent durability and operated stably without any degradation at 900 °C for 450 h with helium, CO2, or CO as the sweep gas. The present results demonstrate that a SDC70–LSF30 dual-phase membrane is a promising chemically stable device for oxygen production and CO2 capture with sufficiently high oxygen permeation flux.

UOW Authors


  •   Wang, Zhongtao (external author)
  •   Sun, Wenping
  •   Zhu, Zhiwen (external author)
  •   Liu, Tong (external author)
  •   Liu, Wei (external author)

Publication Date


  • 2013

Geographic Focus


Citation


  • Wang, Z., Sun, W., Zhu, Z., Liu, T. & Liu, W. (2013). A novel cobalt-free, CO2-stable, and reduction-tolerant dual-phase oxygen-permeable membrane. ACS Applied Materials and Interfaces, 5 (21), 11038-11043.

Scopus Eid


  • 2-s2.0-84887587189

Has Global Citation Frequency


Number Of Pages


  • 5

Start Page


  • 11038

End Page


  • 11043

Volume


  • 5

Issue


  • 21

Place Of Publication


  • United States