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 X-2 On solid/gas interface are reviewed. The models have three reaction coordinates: the distance y between the X fragments of X-2 molecule, the distance x of X-2 molecule from the surface, and the effective coordinate theta 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. (c) 2005 Elsevier B.V. All rights reserved.