Abstract
Zirconium (IV) soaps of butyric, valeric and stearic acid were prepared and characterised by infrared spectroscopy. Thermal decomposition was studied by dynamic thermogravimetry and differential thermometry in the temperature range of 200-800°C The order of decomposition was found to be zero for all soaps. The activation energies ΔE were found to be: 8.233, 8.620 and 7.181 kJ mol -1 for butyrate, valerate and stearate respectively. The frequency factor, Z, entropy change ΔS and free energy change ΔG were calculated and a probable decomposition mechanism proposed.
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