Abstract
Publisher Summary This chapter focuses on the application of percolation theory to describing kinetic processes in porous solids, including desorption of condensate, mercury penetration, and catalytic deactivation by site coverage and pore blockage. All these processes are of fundamental importance for heterogeneous catalysis. In the framework of this theory, the medium is defined as an infinite set of sites interconnected by bonds. Percolation theory can be applied to porous solids via identification of network sites with voids, and bonds with necks. Thus, the theory is applicable primarily to spongy porous structures but in some cases also to corpuscular structures.Percolation theory has been successfully used to analyze condensate desorption from porous solids, mercury penetration into porous solids, and the kinetics of catalytic deactivation by site coverage and pore blockage. The chapter briefly outlines the main ideas and results of percolation theory, which are of interest from the point of view of describing the kinetic processes in porous solids.
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