KINETICS OF FLUID-SOLID CATALYTIC REACTIONS

KINETICS OF FLUID-SOLID CATALYTIC REACTIONSSerdar ARICAN

OutlineSteps in Catalytic ReactionsIntrinsic Rate ExpressionsCorrelation of Rate Data

Steps in Catalytic ReactionsThere are seven (7) steps in a catalytic reactionMass TransferDiffusion in poresAdsorptionReactionDesorptionDiffusion in poresMass Transfer

Mass Transfer of the Reactants (Products)

Diffusion in PoresIn a heterogeneous reaction sequence, mass transfer of the reactants first takes place from the bulk fluid to the external surface of the pellet.

Then the reactants diffuse from the external surface into and through pores within the pellet, with reaction taking place only on the catalytic surface of the pores

Surface Reaction