11-08U

We obtained the chain of quantum kinetic reaction-diffusion-type equations for "adsorbate-substrate" system with taking into account the coupling of an adparticle with a metallic surface, the adsorbate surface diffusion and the occurrence of bimolecular chemical reactions. We calculated the temperature dependence of the kinetic kernels that define the activation behaviour of the diffusion coefficients and the reaction rates. It is shown that changing the "adsorbate-substrate" coupling one can alter the temperature dependence of the reaction rates. It is also indicated that mean field terms contribute to the activation energies of the reaction rates while they have a vanishing contribution to the activation energies of the diffusion coefficients.