The most common method of searching for a solid decomposition mechanism is by predicting the activation energy using model-free techniques such as the DAEM, OFW, KAS etc. The activation energy is then used in Doyle's approximation which is in turn used in the master plots equation. The theoretical and experimental master plots are plotted so as to deduce the most probable mechanism. However, Criado et al. (1989) presented a master plots method that is based on the first derivative of x (conversion). I notice that the master equation does not need the value of the activation energy. With that being said, does it mean that one can determine the mechanism using Criado et al. (1989) method without needing to first evaluate the activation energy. Here is a link of Criado et al. (1989) work Article Applicability of the Master Plots in Kinetic Analysis of Non...