Ceramic oxygen permeable membranes (OPMs) are widely considered the “next generation” technology for pure separation and catalytic membrane reactors. However, main issue of OPM is high operating temperature (above 800 °C) resulting implications materials, cost, as well complexities (e.g., sealing, creep deformation, thermal shock during cycling). A new design coupling La0.6Sr0.4Co0.2Fe0.8O3-? w...