Evaluation of the application of different diffusion models for the methanation of CO/CO2 mixtures

CO/CO2-Methanation can contribute to the storage of intermittently produced renewable energy. In order be able design this heterogenous catalytic process well with models, a solid diffusion model is necessary. Thus, effects selection are simulated in context under steady-state and unsteady-state conditions. Therefore, dusty gas Wilke-Bosanquet compared binary friction model. The operation conditions varied over wide range achieve general validity conclusions. It shown that all models lead similar results for high Knudsen numbers Under porous catalyst pellets low numbers, however, differ thus recommended. Although simulations were carried out methanation as an example reaction, transferable comparable heterogeneously catalyzed phase reactions.