Changing catalyst performance by varying the distribution of active catalyst within porous supports

Abstract

Uniform and nonuniform distribution of catalyst on porous supports are compared with regard to: (1) the catalyst selectivity in a series reaction A → B → C, (2) the catalyst deactivation under a self-fouling reaction A → B → C. The nonuniform distribution considered is one in which the catalyst concentration decreases towards the center of pellets. It is found that this distribution gives a better selectivity to B and decreases the average rate of deactivation by C. In studying the fouling of catalyst pellets, the accuracy and usefulness of simplified poisoning models were evaluated. © 1972.