Catalyst Deactivation by Site Coverage Only

Consider a simple reaction AT B with the conversion of adsorbed A into adsorbed 5 on a single site as the rate-determining step. The steps may be written 

With (5.3.2.2-2) as the rate-determining step the rate on a given site can be written  

Suppose now some species C is irreversibly adsorbed on the active site and competes with A and B for their occupation  

Let the deactivating agent C be formed out of 47 by a reaction parallel to the main reaction. For first order kinetics its rate of formation can be written 

There is one very recent example of application of the rigorous approach outlined here. It deals with the deactivation in the solid acid alkylation process for the production of high octane gasoline [Martinis and Froment, 2006]. The kinetic modeling of the reaction between 1-butene and i-butane on a Y-zeolite catalyst was expressed in terms of elementary steps and the kinetics were written in terms of single events, discussed in Chapters 1 and 2. It was found that the 

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