Nevertheless, when a set of different curves obtained under different heating rate conditions are analyzed simultaneously, only one kinetic model fits all the data and yields a single straight line. Fig. 2 includes a set of curves simulated under different linear heating rates, i.e. 5, 10 and 20 Kmin?1, after assuming the kinetic parameters included in the figure caption. These data can be simultaneously analyzed by means of Eq. (6) because, as it was stated above, any set of da=dt–a–T experimental data obtained for the same solid state reaction under different heating profiles should fit this equation simultaneously