Lumping nonlinear kinetics in porous catalysts: Diffusion‐reaction lumping strategy

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Abstract
Nonlinear kinetics in multicomponent mixtures are best described in terms of continuous distribution functions. The quasilinearization procedure that we introduced in 1988 for “uniform” kinetics does not carry over to problems where second‐order derivatives appear, as in all cases where diffusion phenomena are of importance. We analyze a simple diffusion‐reaction problem in a porous catalyst, by making use of a perturbation technique. The general conclusions reached from this specific problem can be generalized to a wider class of diffusion‐reaction problems in complex mixtures.

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