The results of an attempt to derive correct nonisothermal kinetic equations from isothermal ones through the classical nonisothermal change (CNC) of the postulated primary kinetic equations are presented. An alternative possibility through use of the model of infinitesimal isothermal portions (MIIP) is discussed.
The paper deals with the influence of the deviation of the true heating rate with respect to the programmed one on the values
of non-isothermal kinetic parameters for the solid-gas thermal decompositions of CaC2O4.H2O and [Ni(NH3)6]Br2. An original method, based on integration over small ranges of the variables and making use of local heating rates, was applied
in order to determine the non-isothermal kinetic parameter values. The results show significant differences between values
of non-isothermal kinetic parameters obtained by using true local heating rates and those obtained by using the programmed