Synthesis and application of nano porous La0.6Sr0.4CoO3-delta on an oxygen separation membrane

Abstract

As the oxygen permeation flux of La0.7Sr0.3Ga0.6Fe0.4O3-delta (LSGF) membranes is lower than commercial membranes, we coated the nano porous La0.6Sr0.4CoO3-delta (LSC) particles to enhance the oxygen permeation flux. The nano porous LSC particles were synthesized in an advanced process to increase the volume fraction of nano pores by ultrasonic spray pyrolysis. The synthesized LSC particles consisted of nano sized primary particles and pores. They also had remarkably high surface area (22 m(2)/g). It was found that the LSGF membrane coated by the nano porous LSC resulted in significant improvement in the oxygen permeability.