Abstract
Continuing our previous works, we performed a general analysis of the joint effect of the catalyst deactivation and intraparticle diffusion resistance leading to a retardation of the reactions. A significant effect of the mechanism of model reactions under study on the character of changes in the rate and selectivity of deactivation processes is demonstrated, with a number of examples proving the fruitfulness of such an approach. The problems arising and the possibilities and prospects for further investigations are discussed.