Equilibrium and kinetics of many-center adsorption

Equations have been derived to describe the kinetics and equilibrium of adsorption of independently acting and nondissociating molecules occupying several centers on the surface. These equations have been compared with expressions obtained previously by other investigators for many-center and one-center adsorption. Over a broad range of surface coverage, the differences among the parameters determined by these expressions are no greater than 20%, and this makes it difficult to obtain an adequate description of experimental data. Computer simulation of the adsorption process is proposed as a discriminative experiment. Criteria distinguishing many-center adsorption from single-center adsorption are indicated.