Studies in the system calcium sulphate–water. Part II. The kinetics of dehydration of β-CaSO4,½H2O
- 1 January 1970
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc. A
- p. 528-530
- https://doi.org/10.1039/j19700000528
Abstract
The kinetics of dehydration of β-calcium sulphate hemihydrate have been studied isothermally between 115° and 140°, at constant partial pressures of water vapour between 10–5mm. and 42 mm. The results are consistent with a diffusion-controlled mechanism having an activation energy varying between 6·4 kcal./mole at a partial pressure of water vapour of 10–5 and 49 kcal./mole at 42 mm.Keywords
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