KINETICS OF THERMAL-DECOMPOSITION OF FESO4-CENTER-DOT-7H(2)O

Thermogravimetry, derivative thermogravimetry (TG-DTG), and differenti al thermal analysis (DTA) have been used in the study of decomposition of hydrated ferrous (II) sulphate under air atmosphere. The kinetics of particular stages of FeSO4 . 7H(2)O decomposition were evaluated fr om the dynamic weight losses data. The values of the activation energy E, the preexponential factor A, and thermodynamic parameters of the e ach stages of the thermal decomposition were calculated from alpha(t) data by using the integral method by the applying the Coats-Redferns a pproximation.