Abstract
The famous Kissinger’s kinetic evaluation method (Anal. Chem. 1957) is examined with respect to: a) the relation between the DTA signal θ (t) and the reaction rate r(t) ≡ dα/dt; b) the requirements on reaction mechanism model f(α); and c) the relation of starting kinetic equation to the equilibrium behavior of sample under study. Distorting effect of heat inertia and difference between the temperature Tp of extreme DTA deviation and the temperature Tm at which the reaction rate is maximal are revealed. The kinetic equations respecting the influence of equilibrium temperature Teq, especially fusion temperature Tf, are tested as bases for a modified Kissinger-like evaluation of kinetics.
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