Abstract
The problem of determining the optimal catalyst activity profile for the maximization global selectivity in nonisothermal flat, cylindrical or spherical pellets is analyzed and solved for the case of consecutive reactions with arbitrary kinetics. It is proven that the optimal catalyst distribution is an appropriately chosen Dirac ▪-function, i.e. all the active catalyst must be deposited at a specific distance from the center of the pellet. Analytical expressions are derived for the optimal catalyst location in terms of the pertinent physicochemical and operating parameters. It is shown that pellets with optimal catalyst distribution result in global selectivities which can be dramatically higher than those obtained with uniformly activated pellets.
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