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Kinetics of exothermal decomposition of some ketone-2,4-dinitrophenylhydrazones |
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| Authors: | Jeanina Pandele Cusu Adina Magdalena Musuc Mihaela Matache Dumitru Oancea |
| Affiliation: | 1. Department of Physical Chemistry, Faculty of Chemistry, University of Bucharest, 4-12 Regina Elisabeta Blvd, 030018, Bucharest, Romania 2. ??Ilie Murgulescu?? Institute of Physical Chemistry, Romanian Academy, 202 Spl. Independentei, 060021, Bucharest, Romania 3. Department of Organic Chemistry, Faculty of Chemistry, University of Bucharest, Biochemistry and Catalysis, 90-92 Panduri Street, 050663, Bucharest, Romania |
| Abstract: | In this study, the thermal stability and exothermal decomposition of some ketone-2,4-dinitrophenylhydrazones have investigated using the DSC technique. The synthesized and purified 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. The isoconversional and model-fitting methods were applied to determine the activation parameters from the common analysis of multiple curves measured at different heating rates. 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 nonlinear regression. The results are discussed in relation to the effect of the ketone structure. |
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