ABSTRACT
Numerous studies were devoted to the deactivation of zeolites; however, the coking process is still far from being fundamentally understood. The quantitative formulation of the reaction deactivation kinetics and mathematical analysis of the resulting models are essential for the design and operation of the reactor in which deactivation occurs. The quantitative formulation of the reaction deactivation kinetics and mathematical analysis of the resulting models are essential for the design and operation of the reactor in which deactivation occurs. Many petroleum refining and petrochemical processes such as the catalytic cracking of gas oil, catalytic reforming of naphtha, and dehydrogenation of ethylbenzene are accompanied by the formation of carbonaceous deposits, which are strongly adsorbed on the surface, somehow blocking the active sites. Since deactivation affects the rate of the main reaction through the activity, the deactivation kinetics are invariably tied to main reaction kinetics.
