Synthesis and optimization of nano-porous La0.6Sr0.4CoO3−δ on the oxygen separation membrane

✍ Scribed by K.-J. Lee; J.-W. Park; J.-K. Yang; K.-S. Lee; Y.-H. Choa

• Publisher: Elsevier Science
• Year: 2007
• Tongue: English
• Weight: 750 KB
• Volume: 449-451
• Category: Article
• ISSN: 0921-5093
• DOI: 10.1016/j.msea.2006.02.385

✦ Synopsis

The oxygen permeation flux of a La 0.7 Sr 0.3 Ga 0.6 Fe 0.4 O 3-δ (LSGF) membrane was found to be lower than commercial membranes, so nano porous La 0.6 Sr 0.4 CoO 3-δ (LSC) particles were coated on it to improve the oxygen permeation flux. The nano-porous LSC particles were synthesized with an increased surface area through the addition of a polymer on ultrasonic spray pyrolysis. The synthesized LSC particles consisted of nano-sized particles (20 nm) and the pore-size of the particles (20-100 nm) was dependent on the concentration of the added polymer. It was found that the LSGF membrane coated by the nano porous LSC particles resulted in a significant improvement in oxygen permeability.