Kinetic study of dehydration of calcium oxalate trihydrate

The dehydration of calcium oxalate trihydrate was studied using DSC method and open sample crucibles. The dehydration proceeds in two steps where first two molecules of water are released around 80 °C and consequently the last molecule of water is released at a temperature around 130 °C. The kinetic...

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Bibliographic Details
Published in:Journal of thermal analysis and calorimetry 2016-04, Vol.124 (1), p.151-158
Main Authors: Honcová, P., Svoboda, R., Pilný, P., Sádovská, G., Barták, J., Beneš, L., Honc, D.
Format: Article
Language:English
Subjects:
Analysis
Analytical Chemistry
Calcium
Calorimetry
Chemistry
Chemistry and Materials Science
Crucibles
Dehydration
Exponents
Hydrates
Inorganic Chemistry
Mathematical models
Measurement Science and Instrumentation
Oxalates
Oxalic acid
Physical Chemistry
Polymer Sciences
Reaction kinetics
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Summary:The dehydration of calcium oxalate trihydrate was studied using DSC method and open sample crucibles. The dehydration proceeds in two steps where first two molecules of water are released around 80 °C and consequently the last molecule of water is released at a temperature around 130 °C. The kinetic analysis of overlapping peaks was performed, and the apparent activation energy, pre-exponential factor, and kinetic exponents of kinetic model (reaction order model) were evaluated for both effects.
ISSN:1388-6150
1588-2926
1572-8943
DOI:10.1007/s10973-015-5110-2