Article ID Journal Published Year Pages File Type
621429 Chemical Engineering Research and Design 2010 10 Pages PDF
Abstract

A multigrain catalyst model is developed to describe the simultaneous multicomponent diffusion-cum-reaction taking place in a unifunctional multicomponent catalyst. In this, particles of the more active component are randomly dispersed in a less active near-spherical porous matrix. The catalyst macro-particle is assumed to consist of sub-layers of different thicknesses of active matrix, M, alternating with sub-layers (of different thicknesses) of microspherical particles of the more active component (Z) embedded in the active matrix (the Z + M sub-layer). Cracking of a model compound, 1,3,5-triisopropylbenzene (1,3,5-TIPB), in this catalyst particle is selected as a simple test problem. The concentration profiles of the reactant and the products within the catalyst macro-particle are computed and the effects of important parameters on these are studied.

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