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Journal of Structural Chemistry

2010 year, number 7

Thermokinetic modeling of Octogen decomposition using the simultaneous thermal analysis data

O. S. Ordzhonikidze, A. N. Pivkina, Y. V. Frolov, N. V. Muravyev, K. A. Monogarov, I. V. Fomenkov
Keywords: differential scanning calorimetry (DSC), thermogravimetry (TG), octogen, thermal decomposition, thermokinetic modeling
Pages: 129-134


Experimental conditions of synchronous thermal analysis (STA) for gaining the reliable values of kinetic parameters and constructing a thermokinetic model of octogen decomposition were determined. A decrease in the samples' heating rate in the range of 20-0.5 K/min was shown to diminish the values of activation energy (Ea) and preexponential factor (A). Ea measured at low heating rates (2-0.5 K/min) is close to the energy of N-NO2 bond cleavage, which is postulated as the first stage of the decomposition. Results of thermokinetic modeling of the octogen thermal decomposition are presented.