KINETICS OF CATALYSIS WITH SURFACE DISORDER

We study the effects of generalized surface disorder on the monomer-mo nomer model of heterogeneous catalysis, where disorder is implemented by allowing different adsorption rates for each lattice site. By mappi ng the system in the reaction-controlled limit onto a kinetic Ising mo del, we derive the rate equations for the one- and two-spin correlatio n functions. There is good agreement between these equations and numer ical simulations. We then study the inclusion of desorption of monomer s from the substrate, first by both species and then by just one, and find exact time-dependent solutions for the one-spin correlation funct ions.