Effect of polymorphic phase transitions on stability of energetic compounds. Thermal transformations of 2,4,6-tris(2,2,2-trinitroethylnitramino)-1,3,5-triazine

Захаров, В. В.; Чуканов, Н. В.; Larikova, T. S.; Шилов, Г. В.; Korepin, A. G.; Пивкина, Алла Н.; Моногаров, Константин А.; Korsunskiy, B. L.; Корчагин, Денис В.; Алдошин, С. М.

doi:10.1007/s11172-020-2732-8

Cited by 7 publications

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“…The most energetic substance among those considered, compound 3 , shows two clear-cut endothermic events at 120 and 130 °C prior to the decomposition (Figure ). These endothermic processes have been studied by the authors elsewhere . On the basis of the X-ray analysis, the first event was attributed to the solid-state transformation α- 3 → β- 3 , whereas the second endothermic peak was attributed to primarily the melting of 3 .…”

Section: Resultsmentioning

confidence: 99%

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Delving into Autocatalytic Liquid-State Thermal Decomposition of Novel Energetic 1,3,5-Triazines with Azido, Trinitroethyl, and Nitramino Groups

et al. 2020

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Thermal decomposition of 1,3,5-triazines with azido, trinitroethyl, and nitramino groups, the three important energetic functionalities, has been studied with a range of thermal analysis tools. The involved compounds melt under heating with the following mass loss and heat and gas release in the course of thermal decomposition. Model-fitting kinetic analysis resulted in formal reaction schemes with two general stages. In case of the least energetic 6-azido-2,4-bis(2,2,2-trinitroethylamino)-1,3,5-triazine, the first reaction is a first-order reaction followed by a thirdorder reaction. Alternatively, for 6-azido-2,4-bis(2,2,2-trinitroethylnitramino)-1,3,5-triazine and 2,4,6-tris(2,2,2-trinitroethylnitramino)-1,3,5-triazine, the first step comprises the autocatalytic reaction. The activation energy for the first decomposition step drops from 141 to 122 kJ mol −1 due to the inductive influence of a β-nitramino group. The second general reaction for all species obeys the third-order reaction model with activation energies in the range 112−126 kJ mol −1 . On the basis of the analysis of the kinetic data and temporal behavior of the evolved gases, a similar primary decomposition channel, the homolytic cleavage of a C− NO 2 bond, has been proposed for all investigated substances.

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Section: Resultsmentioning

confidence: 99%

“…However, no information on the thermal properties of the above compounds is available yet. We have started their research and reported the polymorphic transformations of 3 …”

Section: Introductionmentioning

confidence: 99%