Thermochemical stability of LaxSr1-xCoyFe1-yO3-δ and NiFe2O4-Ce0.8Tb0.2O2-δ under real conditions for its application in oxygen transport membranes for oxyfuel combustion

The thermochemical stability of two mixed ionic-electronic conductors has been tested under real operating conditions in 4-end modules of oxygen transport membranes for application in oxyfuel combustion. It has been found that the dual-phase NFO-CTO is stable under all the conditions tested whereas the single phase LSCF shows low stability, reacting with CO2 and SO2 to form carbonates and sulphates.318