Thermochemical properties and non-isothermal decomposition reaction kinetics of 3, 4-dinitrofurazanfuroxan (DNTF)

摘要

The constant-volume combustion energy, Δ_c U (DNTF, s, 298.15 K) and kinetic behavior of the exothermic decomposition reaction of the title compound (DNTF) are determined by a precise rotating bomb calorimeter and DSC, respectively. Its standard enthalpy of combustion, Δ_cH_m~θ (DNTF, s, 298.15 K), standard enthalpy of formation, Δ_cH_m~θ (DNTF, s, 298.15 K) and kinetic parameters of the major exothermic decomposition reaction in a temperature-programmed mode [the apparent activation energy (E_a) and pre-exponential factor (A)] are calculated. The values of Δ_cU (DNTF, s, 298.15 K), Δ_cH_m~θ (DNTF, s, 298.15 K), and Δ_cH_m~θ (DNTF, s, 298.15 K) of DNTF are -9733.96 +- 8.59 Jg~(-1), -3018.29 +- 2.68 kJ mol~(-1), and 657.23 +- 2.70 kJ mol~(-1), respectively. The kinetic model function in integral form and the value of E_a and A of the major exothermic decomposition reaction of DNTF are 1—(1—α)~(1/3), 177.03 kJ mol~(-1) and 10~(13.68) s~(-1), respectively. The critical temperature of thermal explosion of DNTF is 240.6℃.