For the kinetic modeling, a gas-flowing solids-fixed bed reactor (GFSFBR) model as described by Nikačević et al. is set up . In this kind of model, the solid sorbent MgCl2 is assumed to flow through the reactor together with the gas phase, while the catalyst is fixed in the reactor, as The reactor model used for this study is a one-dimensional, steady-state, pseudohomogeneous model that does not consider any changes in pressure or temperature (isothermal, isobaric). Considering both the NH3 synthesis and the NH3 sorption reaction with their respective stoichiometric coefficients, 𝜈 , and 𝜈 , , the resulting mass balance for species 𝑖 is given in eq. (17).