Thermal stabilities of some benzaldehyde 2,4-dinitrophenylhydrazones |
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Authors: | Jeanina Pandele Cusu Adina Magdalena Musuc Dumitru Oancea |
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Affiliation: | 1. Department of Physical Chemistry, Faculty of Chemistry, University of Bucharest, 4-12 Regina Elisabeta Blvd, 030018, Bucharest, Romania 2. Romanian Academy, ??Ilie Murgulescu?? Institute of Physical Chemistry, 202 Spl. Independentei, 060021, Bucharest, Romania
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Abstract: | The thermal stability of some benzaldehyde 2,4-dinitrophenylhydrazones has been studied using DSC technique. The crystalline solids are thermally stable and start to decompose after melting. Non-isothermal DSC curves, recorded at several heating rates, were used to evaluate the melting properties and the kinetics of thermal decomposition. Both isoconversional and model fitting methods were used for the evaluation of the kinetic parameters. Based on the results of the model free method, a kinetic model was derived and the kinetic parameters were obtained by means of a multivariate non-linear regression. A good agreement between the experimental and fitted data was found. |
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