Abstract
The kinetics of the thermal decomposition of solids are reviewed, with emphasis on topological considerations. The general model of nucleation in the bulk of the reactant is explored in detail and the kinetic equations appropriate to this model are derived. It is pointed out that a multistage nucleation process leads to a power law whenever the characteristic time for nucleus formation is long compared with the observation time, and that the assumption of equal rate constants for successive steps is unnecessarily restrictive. The problem of the induction period is examined and two possible reasons for the critical time t 0, namely the use of an incorrect model, and time-dependent growth rates (including, as a special case, aggregation without chemical decomposition) are advanced. Finally, the consequences of nucleation only on the surface of the reactant are mentioned briefly.
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References
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Jacobs, P.W.M. (1969). Kinetics of the Thermal Decomposition of Solids. In: Gray, T.J., Fréchette, V.D. (eds) Kinetics of Reactions in Ionic Systems. Materials Science Research. Springer, Boston, MA. https://doi.org/10.1007/978-1-4899-6461-8_3
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DOI: https://doi.org/10.1007/978-1-4899-6461-8_3
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