Intercrystalline water diffusion

Galwey and Laverty [13] concluded, from complementary kinetic investigations, that dehydration of Ca(OH)2 was satisfactorily represented by the first-order equation. The overall rate of H2O release was sensitive to the locally prevailing water vapour pressure and its distribution within the reactant mass. Kinetic characteristics were strongly influenced by the rates of intracrystalline and intercrystalline diffusive escape of product water which strongly depended on reactant compaction/dispersal within the heated zone. Measured values of and for Ca(OH)2 dehydration could not be identified with a single reaction step because... 

The transformation of the amorphous fields has to effect such important characteristics as permeability and diffusivity of water. The transport processes proceed exclusively in amorphous part of any blend matrix, and hence this process will be structure sensitive relative to change of structural organization in intercrystalline fields. 

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