Isoconversional and Model-fitting Approaches to Kinetic and Thermoanalytic Study of Lanthanum Oxalate: Nonlinear Relationship between Kinetic Parameters

The data for the nonisothermal and isothermal thermal decompositions of lanthanum oxalate have been analysed using model-free model-fitting kinetic techniques. When applied to Coat-Redfern(CR) equation, widely used approach that results excellent fitting both but produces very ambiguous values Arrhenius parameters. These cannot be compared those obtained from experiments. On other hand, strategy represented by iso-conversional method, such as Flynn-Wall-Ozawa (FWO) Kissinger-Akahira-Sunose (KAS), emphasize propertionate variation activation energy with degree conversion model free is recommended a reliable way obtaining consistent information non-isothermal data. Despite their linear correlation, parameters do not exhibit isokinetic behaviour. Thus, utilising Nonlinear Compensation Law, greater association between triplets was examined.