III International Conference

PP-III-76NON - LINEAR ABSOLUTE FUNCTIONAL MODEL OF SELF-SUSTAINEDDYNAMIC PHENOMENON AND ITS IMPLEMENTATION FOR DESCRIPTIONOF CATALYSIS AND NON-EQUILIBRIUM KINETICSMamedov A.Kh.Saudi Basic Industries Corporation, P.O. box.10331, Riyadh, KSAE-mail: mamedova@Sabic.comIn this paper is presented a new non-linear non-equilibrium dynamic model forexplanation of catalytic phenomenon in exothermic reactions. The non –linear absolutefunctional model of self-sustained dynamic phenomenon describes the change of reactiondirection (macroscopic branching) and the stability of the steady state condition of thecatalyst. The non-linear absolute functional model of entropy production allows to givealternative description of catalytic phenomenon, selectivity and phase transformations on thebasis of macroscopic branching of non-linear processes to the thermodynamic state havingmaximum value of entropy production.IntroductionThe aim of our present paper is to bring some lights on connection of catalysis and nonequilibriumthermodynamics by non- linear absolute functional model of self-sustaineddynamics based on inter- reaction energy distribution regularities which describes a entirelynew concept of dynamics connecting the intensivity of change with personal properties of thesystem.Non - linear absolute functional model for description of non-equilibrium processesThe change of entropy production rate is described by non-linear absolute functionalmodel. With the increase of entropy the kinetic consistent of the model decreases and the nonequilibriumprocess selects the way where activation energy is less and recourses ofexothermic reactions is more. The change of direction (selectivity) of the reaction is realizedthrough in-situ formation of new active centers which compensate the decrease of entropyproduction rate in original direction.During branching of the reaction the irreversible process modifies the intermediate activecomplex according to the new route through changing of structure of the active complex andthe nature of active sties.The change of kinetic parameters during evaluation of the non equilibrium processto the equilibriumClose to equilibrium the role of kinetic principles decreases and thermodynamics plays anessential role. By non-linear approach, formation of steady state active sites takes place only612