A mixed ionic and electronic conducting dual-phase oxygen permeable membrane with high CO2- tolerance

Abstract

A dual-phase membrane has been successfully developed using x wt.% Ce0.9La0.1O2-δ and (100-x) wt.% La2CuO4+δ (x CLO-(100-x) LCO) with no alkaline earth metals contained in the system. The 60CLO-40LCO dual-phase membrane exhibites the highest oxygen permeation rate of 0.25 mL min-1 cm-2 under the He sweeping gas condition at 950 °C. Additionally, excellent CO2- tolerance was obtained using this sample. The stable oxygen permeability and the outstanding CO2- tolerance performance ensure the 60CLO-40LCO dual-phase membranes highly promising in the oxyfuel technologies for the CO2 capture and sequestration application.