Adiabatic and non-adiabatic models for dissociative adsorption kinetics of diatomic molecules X2 on solid surface

Adiabatic and non-adiabatic models developed for describing the dissociative adsorption kinetics of diatomic molecules X2 on solid/gas interface are reviewed. The models have three reaction coordinates: the distance y between the X fragments of X2 molecule, the distance x of X2 molecule from the surface, and the effective coordinate θ describing possible local structure reorganization of the metal surface under adsorption. In the non-adiabatic model the motion along the y is considered to be quantum or classical. Examples of applying of these models to studying the oxygen dissociative adsorption on transition and noble metals are given.