Abstract

A reaction kinetic model has been derived for a solid-state diffusion-controlled reaction in a system of spherical particles of A isolated in a matrix of B. This model is analogous to the Ginstling-Brounsthein model except that the diffusion of A is the rate-controlling step. The model, therefore, resulting in an expanding spherical shell of product AB, is ▪ where t = time, x = fraction reaction, K = reaction rate constant.

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