THERMAL-BEHAVIOR AND KINETIC-ANALYSIS OF THE THERMOGRAVIMETRIC DATA OF SOME COPPER(II), NICKEL(II), AND PALLADIUM(II) 2-HYDROXYARYLOXIMATES

The thermal stability and mode of decomposition of eleven 2-hydroxyary loxime chelates with the transition metals Cu(II), Ni(II), and Pd(II) have been studied in air atmosphere using the TG/DTA technique. In the case of copper chelates, their thermal behaviour was also studied in nitrogen atmosphere by TG/DTG. A kinetic analysis of the TG data was p erformed using the Coats-Redfern method to determine the apparent acti vation energies and the pre-exponential factor of the Arrhenius equati on. Mass spectrometry was also used and possible fragmentation pattern s are given and discussed.