An investigation was made of the perovskite-type O-permeable ceramic membranes, La0.6Sr0.4CoO3 and La0.7Sr0.3Ga0.6Fe0.4O3. The effects of surface modification upon O permeability were studied for monolithic membranes.

Thick-Film Type Oxygen Transport Membrane - Preparation, Oxygen Permeation and Characterization. S.Lee, J.H.Yu, D.W.Seo, S.K.Woo: Journal of Electroceramics, 2006, 17[2-4], 719-22