III International Conference

PP-I-63interaction of CO molecule beam with oxygen adsorbed on the verge of Pd (111) (Fig.) [1].The procedure of slope opposition of kinetic curves for a CO 2 formation rate (curve 1) and aCO chemisorption rate (curve 2) [provided that condition (1) is observed] is conditioned onthe competition of transitions of physically adsorbed molecules of CO in two states:chemisorption and some molecules of CO 2 .A time change of CO 2 formationrate (1) and a rate of concentrationchanges in chemisorbed molecules ofCO 2 on the verge of Pd (111) coveredwith adsorbed oxygen under theinfluence of CO molecular beam atT = 374K . Firm lines – experimentalresults [1], dots – calculated.It is ascertained that for definition a catalytic reaction mechanism it is necessary to use aquantitative criterion. The reaction passes according to Langmuir-Hinschelwood mechanismat the condition compliance: τJ θ − 11, where J 0 and θ 0- a rate of reaction and0 0