Mid-temperature deoxygenation of H2O and simultaneous deoxygenation of H2O–CO2 over hydrogen-treated In–CeO2 and Fe–CeO2

Abstract

Reduced Fe–CeO₂ and In–CeO₂ are both found to be active for thermal H₂O deoxygenation to H₂ below 700 °C. Fe–CeO₂ shows an onset of H₂O deoxygenation at around 350 °C, and also the capability of syngas formation from simultaneous deoxygenation of a H₂O–CO₂ mixture. In–CeO₂ cannot perform the simultaneous deoxygenation though it has a low onset temperature of H₂O deoxygenation at around 200 °C. The simultaneous deoxygenation of the H₂O–CO₂ mixture to syngas has potentials in developing a carbon-neutral cycle.