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The kinetic study of thermal dehydration stages of SrCl2 · 2H2O and its deuterium analog

✍ Scribed by Haruhiko Tanaka; Satoshi Shimada; Hisao Negita

Publisher
John Wiley and Sons
Year
1985
Tongue
English
Weight
337 KB
Volume
17
Category
Article
ISSN
0538-8066

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✦ Synopsis

The kinetic deuterium isotope effect in the thermal dehydration stages of powdered SrClz . 2H20 was examined by means of both isothermal and dynamic gravimetries.

These dehydration processes proved to be controlled by a random nucleation and its subsequent growth mechanism. No significant kinetic isotope effect was seen in these dehydration stages. It seems that there exists a kinetic compensation effect between the hydrate and its deuterium analog, if any isotopic differences in actimtion energy and frequency factor could exist.

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## Abstract Thermal dehydration process of calcium oxalate monohydrate, CaC~2~O~4~ · H~2~O, was reinvestigated from a viewpoint of reaction kinetics. On the basis of data of thermogravimetry, kinetic analysis was performed under nonisothermal conditions using an integral composite procedure, which