ABSTRACT
In Chapter 7, we introduced the „eld of heterogeneous catalysis, and discussed the steps involved in a catalytic reaction. It was pointed out that when a solid catalyst is used to promote the rate of a chemical reaction, the reaction proceeds at the šuid/solid interface, and involves at least one adsorbed species. The adsorbed species then react on the surface. The dynamics of the adsorption process, in addition to the surface reaction, must therefore have a major impact on the kinetics of the overall process. It is useful, therefore, to consider the theories of adsorption and surface reaction together, and to develop mathematical models for these processes. The combination of the models for these two processes is then used for the development of rate expressions for the reaction. The following sections therefore present „rst a description of the adsorption process, followed by a development of some popular methods used to derive rate expressions.
