Gas conversion is an academic research field investigating the processes by which energy or chemical substances are transformed using gaseous media as reactants, products, or working fluids. This encompasses the study of thermodynamic cycles, chemical reactions, and physical processes involving gases for applications such as energy generation, chemical synthesis, and waste treatment. Key characteristics include the analysis of gas-phase kinetics, mass and heat transfer in gaseous systems, catalytic processes, and the design of reactors and separation technologies optimized for gaseous states. Its significance lies in developing efficient and sustainable methods for utilizing energy sources, producing valuable chemicals, and managing gaseous emissions, including applications potentially coupled with high-temperature heat sources like nuclear reactors or utilizing gaseous isotopes in nuclear fuel cycles.