Properties of oxygen permeation and partial oxidation of methane in La0.6Sr0.4CoO3−δ (LSC)–La0.7Sr0.3Ga0.6Fe0.4O3−δ (LSGF) membrane

The oxygen separation membrane having perovskite structure for the partial oxidation of methane to synthesis gas was prepared. La0.7Sr0.3Ga0.6Fe0.4O3−δ (LSGF) perovskite membrane coated with La0.6Sr0.4CoO3−δ (LSC) (M1), and the one side of M1 membrane coated with NiO (M2) was prepared to examine the partial oxidation of methane. The single oxygen permeations of the LSC + LSGF (M1) membrane and NiO coated membrane (M2) were measured. The oxygen permeation flux in M1 membrane was higher than that of M1 membrane at 850 °C. The partial oxidation experiment of methane using the prepared membranes was examined at 850 °C. The value of CH4 conversion and CO selectivity of M2 membrane was higher than that of M1 membrane. NiO/NiAl2O4 catalyst was used to improve the methane conversion, and the partial oxidation experiment of methane with M1 membrane was examined at 850 °C. The CH4 conversion was 88%, and CO selectivity was 100%.