Temperature-Programmed Studies on Lanthanum Strontium Cobaltites for Carbon Dioxide Reduction

Five different strontium doped lanthanum cobaltites (La_1-XSr_XCoO₃) were synthesized and evaluated by temperature-programmed techniques (including H₂-TPR and CO₂-TPO). Results demonstrated La_0.75Sr_0.25CoO_3-σ as the most active sample for the conversion of CO₂ to CO at 850°C when the perovskite has been pretreated in H₂ at 500 °C.