Symmetric and asymmetric membranes based on La0.5Sr0.5Fe0.7Ga0.3O3-? perovskite with high oxygen semipermeation flux performances and identification of the rate-determining step of oxygen transport
نویسندگان
چکیده
This work focuses on identifying the rate-determining step of oxygen transport through La0.5Sr0.5Fe0.7Ga0.3O3-? membranes with symmetric and asymmetric architectures. The best semipermeation fluxes are 3.4 10?3 mol. m-2.s-1 6.3 at 900 °C for membrane a modified surface. surface leads to an increase approximately 7 times flux compared that obtained dense without modification. also shows is mainly governed by gaseous diffusion porous support membranes.
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ژورنال
عنوان ژورنال: Journal of The European Ceramic Society
سال: 2021
ISSN: ['0955-2219', '1873-619X']
DOI: https://doi.org/10.1016/j.jeurceramsoc.2021.05.060