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Thermal behavior and thermal safety on 3,3-dinitroazetidinium salt of perchloric acid

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Abstract

3,3-Dinitroazetidinium (DNAZ) salt of perchloric acid (DNAZ·HClO4) was prepared, it was characterized by the elemental analysis, IR, NMR, and a X-ray diffractometer. The thermal behavior and decomposition reaction kinetics of DNAZ·HClO4 were investigated under a non-isothermal condition by DSC and TG/DTG techniques. The results show that the thermal decomposition process of DNAZ·HClO4 has two mass loss stages. The kinetic model function in differential form, the value of apparent activation energy (E a) and pre-exponential factor (A) of the exothermic decomposition reaction of DNAZ·HClO4 are f(α) = (1 − α)−1/2, 156.47 kJ mol−1, and 1015.12 s−1, respectively. The critical temperature of thermal explosion is 188.5 °C. The values of ΔS , ΔH , and ΔG of this reaction are 42.26 J mol−1 K−1, 154.44 kJ mol−1, and 135.42 kJ mol−1, respectively. The specific heat capacity of DNAZ·HClO4 was determined with a continuous C p mode of microcalorimeter. Using the relationship between C p and T and the thermal decomposition parameters, the time of the thermal decomposition from initiation to thermal explosion (adiabatic time-to-explosion) was evaluated as 14.2 s.

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Acknowledgements

This study is supported by the National Natural Science Foundation of China (20603026), the Provincial Natural Foundation of Shaanxi (2009JQ2002) and NWU Graduate Experimental Research Funds (09YSY23).

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Correspondence to H. X. Ma.

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Ma, H.X., Yan, B., Ren, Y.H. et al. Thermal behavior and thermal safety on 3,3-dinitroazetidinium salt of perchloric acid. J Therm Anal Calorim 103, 569–575 (2011). https://doi.org/10.1007/s10973-010-0950-2

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  • DOI: https://doi.org/10.1007/s10973-010-0950-2

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