Abstract
This work describes an experiment applied to determine the activation energy of samples of commercial diesel fuel from thermogravimetric curves obtained in a simultaneous thermogravimetric analyzer (TG-DTA). After collecting data, a mathematical method was used to calculate the activation energy for each sample of diesel oil. The results show coherent values of activation energy, corresponding to the fact that the higher the sulfur content of the fuel, the higher the activation energy found. From the variation of the heating ramp was possible to generate a graph of the kinetic model linearized. The experiment proved dynamic and efficient to understand physicochemical concepts, being applicable to both undergraduates and graduates in chemistry.
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