00-20E

We present a statistical theory for diffusion-reaction processes of gaseous mixture in the system "metal - adsorbate - gas". The theory is based on equivalent taking into account of electron - electron, electron - atom and atom - atom interactions between adsorbed, nonadsorbed atoms and atoms of metal surface. On metal surface the bimolecular reactions of the kind $A + B \leftrightarrow AB$ are possible to occur between adsorbed atoms that is typical of catalytic processes. By means of Zubarev nonequilibrium statistical operator there is obtained the system of transport equations for the consistent description of electronic kinetic and diffusion - reaction atomic processes.