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A CO₂-tolerance oxygen permeable 60Ce₀.₉Gd₀.₁O₂₋δ–40Ba₀.₅Sr₀.₅Co₀.₈Fe₀.₂O₃₋δ dual phase membrane

Author:
Xue, Jian, Liao, Qing, Wei, Yanying, Li, Zhong, Wang, Haihui
Source:
Journal of membrane science 2013 v.443 pp. 124-130
ISSN:
0376-7388
Subject:
artificial membranes, carbon dioxide, oxygen
Abstract:
A CO₂-tolerant dual phase membrane with composition of 60wt% Ce₀.₉Gd₀.₁O₂₋δ–40wt% Ba₀.₅Sr₀.₅Co₀.₈Fe₀.₂O₃₋δ (60CGO–40BSCF) was successfully developed. The 60CGO–40BSCF dual phase membrane showed good reversibility of the oxygen permeation fluxes and good stability in CO₂ atmosphere. A stable oxygen permeation flux of 0.67mL/mincm² was obtained with pure CO₂ as the sweep gas during a 250h oxygen permeation at 950°C. The electronic conductivity results confirmed the concept that the electronic conductivity of the BSCF perovskite oxide could be partly reserved in CO₂ atmosphere. Due to the high oxygen permeation fluxes and the good stability in CO₂-containing atmosphere, the 60CGO–40BSCF dual phase membrane has great potential application in oxyfuel techniques for CO₂ capture and storage.
Agid:
1020060