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

The constant-volume combustion energy, Delta(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, Delta(c) H-m(theta) (DNTF, s, 298.15 K), standard enthalpy of formation, Delta(c) H-m(theta) (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 Delta(c)U (DNTF, s, 298.15 K), Delta(c)H(m)(theta) (DNTF, s, 298.15 K), and Delta(c)H(m)(theta) (DNTF, s, 298.15 K) of DNTF are -9733.96 +/- 8.59 J g(-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. and A of the major exothermic decomposition reaction of DNTF are 1 - (1 - alpha) (1/3), 177.03 kJ mol(-1) and 10(13.68) s(-1), respectively. The critical temperature of thermal explosion of DNTF is 240.6degreesC. (C) 2004 Elsevier B.V. All rights reserved.