Author:
Anderson Carl,Galwey Andrew K.
Abstract
An isothermal kinetic study of the dehydration of orthorhombic calcium sulphite hemihydrate is reported:[Formula: see text]Fractional reaction (α)–time curves exhibit the sigmoid shape characteristic of nucleation and growth reactions proceeding in the solid state. Yield–time data exhibit a very satisfactory obedience to the Avrami–Erofe'ev (n = 2) equation[Formula: see text]Rate studies were concerned with the temperature interval 573–673 K and the calculated activation energy was 173 ± 8 kJ mol−1, showing the hydrate to be thermally relatively stable. The mechanism of dehydration is discussed and reference is made to the dehydration of calcium hydroxide with which it shows close similarities.
Publisher
Canadian Science Publishing
Subject
Organic Chemistry,General Chemistry,Catalysis
Cited by
13 articles.
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