Determination of mechanism function and kinetic parameters of thermal decomposition of the 2,2′-dipyridine-tris(p-methoxybenzoate) europium (III) with non-isothermal TG and DTG curves

The thermal decomposition of the 2, 2' -dipyridine-tris( p-methoxybenzoats) europium(III) and its kinetics were studied under the non-isothermal condition in air by TG-DTG and DTA methods. The intermediate and residue for each decomposition were identified from TG curve. The non-isothermal kinetic data were analyzed by means of integral and differential methods. The possible reaction mechanisms were investigated by comparing the kinetic parameters. The kinetic equation for the first stage can be expressed as d alpha/dt = Aexp( - E/ RT)2(1- alpha)(1/2).