Abstract
Magnesium, barium and lead zirconyl oxalates (abbreviated as MZO, BZO and LZO, respectively) have been prepared in aqueous medium. These compounds have been characterized on the basis of elemental analysis and IR spectral studies. The thermal behaviour of these compounds has been studied with the aid of TG, DTG and DSC techniques. The graphical method of Coats and Redfern has been employed to calculate the kinetic parameters such as apparent activation energy and order of reaction. Heats of reaction for different decomposition steps have been calculated from the DSC curves. The intermediates obtained at the end of various thermal decomposition steps were identified on the basis of elemental analysis and IR spectral studies.
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