Abstract
A study has been made of the kinetic behaviour of three tetrahydrated acetates undergoing dehydration. Differential kinetic analysis was used to discriminate between models. A two-step model, namely two-dimensional nuclei growth and phase boundary reaction in cylinders, is required to describe the course of the dehydration of the three solids. If the Coats-Redfern method is used to fit the kinetic data to any of the models used, the E and A values obtained depend on the heating rate. A model with more than one step must be used.
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