Thermal Decomposition of Nitropyrazoles

Thermal Decomposition of Nitropyrazoles Full article

Journal

Physics Procedia
ISSN: 1875-3892

Output data

Year: 2015, Volume: 72, Pages: 358-361 Pages count : 4 DOI: 10.1016/j.phpro.2015.09.110

Authors

Bragin A. ¹ , Pivkina Alla ^1,2 , Muravyev N. ¹ , Monogarov K. ¹ , Gryzlova Olga ¹ , Shkineva Tatyana ³ , Dalinger I. ³

Affiliations

1	Semenov Institute of Chemical Physics, RAS, Kosygin str. 4, Moscow 119991 Russia
2	National Research Nuclear University MEPhI, Kashirskoye shosse 31, Moscow 115409, Russia
3	Zelinsky Institute of Organic Chemistry, Moscow 119991, Russia

Fully nitrated five-membered heterocycles (pyrazoles), polynitropyrazoles in particular, have been actively studied as promising high-energy materials. Polynitropyrazoles have high density and high enthalpy of formation combined with reduced sensitivity to external stimuli. We have studied non-equilibrium processes of thermal decomposition of the first members of high-energy polynitropyrazoles row, i.e., 3,4–dinitropyrazole, 3,5–dinitropyrazole, and 3,4,5-trinitropyrazole, under atmospheric and increased pressures. The use of increased pressure allowed to reduce the influence of evaporation process of 3,5–dinitropyrazole and to determine the temperature and heat effect of its decomposition, which was found to exceed this value for HMX. For the first time evolved gas products were identified for each stage of decomposition. As a result the probable thermal decomposition pathway for the investigated materials was suggested.

Bragin A. , Pivkina A. , Muravyev N. , Monogarov K. , Gryzlova O. , Shkineva T. , Dalinger I.
Thermal Decomposition of Nitropyrazoles
Physics Procedia. 2015. V.72. P.358-361. DOI: 10.1016/j.phpro.2015.09.110 OpenAlex

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