Catalytic CO₂ Methanation: Providing Optimal Test Conditions for Kinetic Investigations

Abstract

In the context of using renewable energies and recycling climate‐changing gases, methanation of CO2 provides one possibility. However, volatile availability of renewable energies for hydrogen production and fluctuating CO2 streams from different sources lead to enhanced demand in investigating the influence of dynamic process operation on the catalyst performance, including detailed kinetic characterization. Reliable kinetic measurements require isothermal temperature control and absence of macrokinetic diffusion limitations. Both were investigated in this work while the determination of steady‐state kinetic parameters is part of ongoing studies. Furthermore, a detailed analysis with respect to the long‐term‐stability of the nickel‐based catalyst was performed.