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 CNO2 and NNO2 bonds and all the other CN, CC and CH 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.