H. Huang, S. Y. Cheng, J. F. Gao, C. S. Chen and J. X. Yi (2014) Phase-inversion tape-casting preparation and significant performance enhancement of Ce0.9Gd0.1O1.95-La0.6Sr0.4Co0.2Fe0.8O3-delta dual-phase asymmetric membrane for oxygen separation. Journal/Materials Letters 137 245-248. [In English]
Web link: http://dx.doi.org/10.1016/j.matlet.2014.09.016
Keywords: ,Ceramic composites, Functional, Oxygen separation, Membrane, Phase, inversion, HOLLOW-FIBER MEMBRANE, PERMEATION, COMPOSITE, PERMEABILITY

Abstract: The dual-phase Ce0.9Gd0.1O1.95-La0.5Sr0.4Co0.2Fe0.8O3-delta asymmetric membrane was prepared via a phase-inversion tape-casting method. The membrane consisted of a thicker porous support layer and a thinner dense layer. When the dense side of the membrane was coated with a La0.5Sr0.4CoO3-delta catalytic activation layer, the oxygen permeation flux was markedly increased by a factor of 4.1-5.6, reaching 0.45 mL cm(-2) min(-1) at 900 degrees C. The flux increase can be attributed to enhanced surface oxygen exhange kinetics. (C) 2014 Elsevier B.V. All rights reserved.