Applicability of model free isothermal prediction procedures based on the Friedman method and three incremental isoconversional methods for complex processes

Abstract

The possibility of using the model free isothermal prediction procedures for complex processes was critical analyzed. Such procedures based by isoconversional method suggested by Friedman, and three incremental isoconversional methods have been suggested and verified for simulated data corresponding to two first order parallel-competing reactions and two first order consecutive reactions. It has been shown that in order to obtain a satisfactory prediction, these procedures must include the initial stage of determining the range of heating rates at which the thermoanalytical date necessary for the application of these procedures must be recorded, and to consider that the apparent activation parameters depend on both the conversion degree as well as the temperature for which the prediction is made.