CO₂ conversion over Martian and Lunar regolith simulants for extraterrestrial applications

In space, every carbon atom matters. It is a potential source for a wealth of products essential for human space exploration and habitation. Here, we report the use of Martian and Lunar regolith simulants as catalysts for the thermochemical catalytic conversion of CO2. Results of this study clearly underlines activity towards CO production through the RWGS reaction at high temperature for all Martian and Lunar regolith simulants. Characterization of the samples reveals improved catalytic activities directly correlated with the presence and further transformation of iron and magnesium-based compounds and their subsequent migration at the surface. These findings point towards the feasibility of producing propellants in other celestial bodies using local resources.