The kinetics and thermodynamics of the thermal dehydration of crystalline powders of BaC2O4·2H2O, CdC2O4·3H2O and Ba1−xCdxC2O4·2·5H2O have been studied by means of thermogravimetry, as a function of temperature. The dynamic dehydration kinetics are also examined using DTA, recorded simultaneously with TG as a function of temperature. The validity of the estimated mechanism and kinetic parameters is briefly discussed. From DTA study it is concluded that all dehydration peaks are endothermic and the decomposition peaks of barium oxalate to barium carbonate, cadmium oxalate to cadmium oxide and barium cadmium oxalate to barium carbonate and cadmium oxide are exothermic.
Volume 43, 2020
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