Abstract
Characterization, thermal stability and thermal decomposition of transition metal succinates, MC 2H 4C 2O 4· nH 2O (M = Mn(II), Fe(II), Co(II), Ni(II), Cu(II), Zn(II)), the thermal behaviour of succinic acid (C 4H 6O 4) and its sodium salt (Na 2C 2H 4C 2O 4·6H 2O) were investigated employing simultaneous thermogravimetry and differential thermal analysis (TG–DTA), differential scanning calorimetry (DSC), infrared spectroscopy, TG–FTIR system, elemental analysis and complexometry. For the hydrated compounds the dehydration and the thermal decomposition of the anhydrous compounds occur in a single step. For the sodium succinate the final residue up to 545 °C is sodium carbonate, while the transition metal succinates the final residues are Mn 3O 4, Fe 2O 3, Co 3O 4, NiO, CuO and ZnO, respectively. The results also provided information concerning the thermal behaviour and identification of gaseous products evolved during the heating of these compounds.
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