S. Desikan et Lk. Doraiswamy, THE DIFFUSION-REACTION PROBLEM IN TRIPHASE CATALYSIS, Industrial & engineering chemistry research, 34(10), 1995, pp. 3524-3537
Phase transfer catalysis has been in use for over three decades, but t
riphase catalysis, where the phase transfer catalyst is immobilized on
a solid support, is of much more recent origin. Polymeric solids are
among the most commonly used supports, but they lead to diffusion-reac
tion problems considerably more complicated than in conventional solid
catalyzed reactions. Since, rather unaccountably, triphase catalysis
has not been a subject of common interest in chemical engineering, a b
rief review of the field is given with emphasis on the role of catalys
t synthesis in understanding its diffusional implications. This is fol
lowed by the development of a mathematical model for analyzing the dif
fusion-reaction problem in a common triphase catalytic system: liquid-
liquid-solid triphase catalysis.