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oai:ojs.www.eurjchem.com:article/1047 2014-09-30T03:41:50Z eurjchem:ART driver

The kinetic analysis of non-isothermal carisoprodol reaction in nitrogen atmosphere using the invariant kinetic parameters method Kamel, Laila Tosson Carisoprodol Thermal analysis Perez-Maqueda criterion Invariant kinetic parameters Linear isoconversional methods Non-isothermal kinetic parameters The non-isothermal kinetic parameters corresponding to the thermal decomposition of carisoprodol under nitrogen atmosphere was investigated at four different heating rates 5, 10, 15 and 20 °C/min. The activation energy was determined using three linear isoconversional methods, Friedman, Flynn-Wall-Ozawa and Kissinger-Akahira-Sunose. Results showed good agreement with each other. Invariant kinetic parameters (IKP) method was applied in the conversion range of 0.2 ≤ α ≤ 0.8 for the determination of the kinetic triplet. Einv= 95.81 kJ/mol, Ainv = 2.275×107 1/min and the decomposition mechanism corresponds to nucleation and growth, following the Avrami-Erofeev model, A1.5, as the kinetic model. The Perez-Maqueda et al. criterion associated with the independence of activation parameters on the heating rate (by means of Coats-Redfern and Flynn-Wall equation) confirmed the model. Atlanta Publishing House LLC 2014-09-30 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf https://www.eurjchem.com/index.php/eurjchem/article/view/1047 10.5155/eurjchem.5.3.507-512.1047 European Journal of Chemistry; Vol. 5 No. 3 (2014): September 2014; 507-512 2153-2257 2153-2249 eng https://www.eurjchem.com/index.php/eurjchem/article/view/1047/pdf_1047