Thermoanalytical investigations of the decomposition course of copper oxysalts .3. Copper(II) acetate monohydrate

The thermal decomposition course of copper acetate monohydrate (CuAc) was examined on heating up to 600 degrees C at various rates, by TG, DTA and DSC. Non-isothermal kinetic and thermodynamic parameters were determined in air or nitrogen. SEM was used to describe the decomposition course and the solid products were identified by IR and XRD analysis. The results indicated that CuAc was dehydrated at 190 degrees C and then partially decomposed at 220 degrees C, giving rise to CuO in addition to a minor portion of Cu2O and CU4O3. The last two oxides seemed to facilitate the decomposition of the rest of the anhydrous acetate. Cu2O and Cu4O3 were oxidized in air at > 400 degrees C, in a process that did not occur in nitrogen.