The opposite trend is observed for CO*, with the posteriors showing a slightly weaker binding energy than the priors. It is possible that this is due to coverage dependence not being included in the microkinetic model. Higher oxygen coverage at earlier times in the reactor would limit the rate of formation of CO and the adsorption of CH 4 . Since the model was optimized only with respect to the species binding energies, the CO binding energy may have been weakened to account for this. Nevertheless, the di↵erences in both the CO and CH 3 species was slight for the DFT model, indicating that the initial DFT calculations were at least close to the values predicted by the model.