What role does adsorption play in heterogenous catalysis ?

Explanation

Adsorption theory of heterogeneous catalysis : Adsorption theory explains the mechanism of heterogeneous catalysis.
`to` The medern adsorption theory is the combination of the intermediate compound formation theory and the old adsorption theory.
`to` The mechanism of catalysis involves five steps.
`to` Diffusion of the reactants to the surface of the catalyst.
`to` Adsorption of the reactant molecules on the surface of the catalyst.
`to` Occurrence gf chemical reaction on the catalyst's surface through formation of an intermediate.
`to` Desorption of reaction products from the catalyst surface, and thereby making the surface available again for more reaction to occur.
`to` Diffusion of reaction products away from the catalyst's surface.