Abstract

A mathematical model is derived to describe the transient behavior of a continuous stirred tank reactor containing catalyst particles with a bipore distribution when a stimulus is introduced. The reaction taking place inside the catalyst is assumed to be isothermal, first order, and irreversible. The expressions for the zeroth-, first-, and second-order moments of the response curve are given in terms of the adsorption equilibrium constant, the intercrystalline and intracrystalline diffusion coefficients, and the first-order reaction rate constant. A method for the determination of these parameters is presented. The same method also leads to the determination of micro- and macropore effectiveness factors.

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