Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7021684 | Journal of Membrane Science | 2015 | 8 Pages |
Abstract
La(1âx)SrxFe(1ây)GayO3âδ perovskites are some of the most promising materials for oxygen transport membranes due to their high oxygen semi-permeation and good chemical stability at high temperature under a wide range of oxygen partial pressures (from 0.21 to 10â19 atm.). This paper is focused on a better understanding of the influence of the Ga and Sr substitution ratios in the La(1âx)SrxFe(1ây)GayO3âδ perovskite series on oxygen semi-permeation performances, oxygen diffusion and surface exchange coefficients. This study identifies the optimal compositions of the La(1âx)SrxFe(1ây)GayO3âδ perovskite series. In addition, this study shows that the rate-determining step of oxygen transport through the membrane depends strongly on the Ga and Sr substitution ratios.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Filtration and Separation
Authors
P.M. Geffroy, M. Reichmann, L. Kilmann, J. Jouin, N. Richet, T. Chartier,