Thermal behavior of 1,3,3-trinitroazetidine.

The thermal behavior of 1,3,3-trinitroazetidine (TNAZ) is studied by means of high-pressure DSC (PDSC), the combination technique of in situ thermolysis cell with rapid-scan fourier transform infrared spectroscopy (thermolysis/RSFT-IR) and fast thermolysis probe with rapid-scan fourier transform infrared spectroscopy (fast thermolysis/RSFT-IR). The thermal decomposition mechanism is proposed. The results show that the decomposition temperature of TNAZ at 1MPa is 264.7 °C, both the C—NO2 and N—NO2 bonds and all the other C—N, C—C and C—H bonds of the four-membered ring of TNAZ are simultaneously broken with an increase in temperature and the gas products detected of thermal decomposition of TNAZ consist of CO2, NO2, N2O and NO. [Copyright &y& Elsevier]