Jander formula

The kinetic of this reaction was studied by Jander [3 ], which assumed that its rate is governing by the diffusion of one substrate (CaO) through the layer of the product formed to the surface of second substrate (SiOj). Under different simplifying assumptions, using first Pick s law, Jander derived the formula... 

The kinetic models of Jander and Ginstling were developed by Komatsn [11]. He had assumed that the reaction starts in the places of inteigrannlar contact (Fig. 2.7). The fundamental role in the reaction has the number of these contacts, thus the fineness of the mixture. If the number of contacts is constant in time, the formula derived by Komatsu is reduced to lander s equation, in which, however, the k constant is the function not only of the temperature but also the ratio of grains sizes and of both components as well as the content ratio of these components in the mixture. 

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