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Kinetics of thermal decomposition of CuSO4 · 5H2O to CuO

✍ Scribed by Ahmed M. Gadalla

Publisher
John Wiley and Sons
Year
1984
Tongue
English
Weight
619 KB
Volume
16
Category
Article
ISSN
0538-8066

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✦ Synopsis

The effect of particle size, type of crucible, and heating rate on the thermal curves obtained simultaneously for CuSO, . 5H20 were discussed. The dissociation steps were confirmed. Thermogravimetric techniques for determining the rate-controlling processes and kinetic parameters were applied for the dehydration steps and the calcination of CuSO, and CuSO, . CuO. For the dehydration of the monohydrate one mechanism operates but the activation energy and preexponential factor vary over wide ranges. Differentiating between various mechanisms using the same technique was sometimes difficult giving completely different values for the kinetic parameters. In view of such difficulties the various methods were assessed, the best techniques to treat similar results were recommended and the operating mechanisms and kinetic parameters for the various steps were thus established.

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✍ J. Czarnowski; H.J. Schumacher 📂 Article 📅 1972 🏛 Elsevier Science 🌐 English ⚖ 433 KB

The thermal decomposition of F20 has ken investigated in reactors of hfg, Al and quartz usini: a &tic method. The temperature was varied between 501 and 583°K and the total pressure between 10 and 750 torr. The reaction is homogweous and at moderate and high pressures essentially of second o&i. In