Chinese Journal of Applied Chemistry

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Nonisothermal Decomposition Kinetics and Thermal Safety of Ag2(BTATz)·2H2O(BTATz=3,6-Bis(1-H-1,2,3,4-tetrazole-5-amino)-1,2,4,5-tetrazine)

REN Yinghui1,2*, LI Wen2, ZHANG Xianbo2, ZHAO Fengqi1, YI Jianhua1, MA Haixia2, XU Kangzhen2, SONG Jirong2,3   

  1. (1.Science and Technology on Combustion and Explosion Laboratory,Xi′an Modern Chemistry Research Institute,Xi′an 710065,China;
    2.School of Chemical Engineering,Shaanxi Key Laboratory of Physico-inorganic Chemistry,Northwest University,Xi′an ,710069,China;
    3.Conservation Technology Department,The Palace Museum,Beijing 100009,China)
  • Received:2012-11-29 Revised:2012-12-18 Published:2013-09-10 Online:2013-09-10

Abstract: The silver salt of 3,6-bis(1-H-1,2,3,4-tetrazole-5-amino)-1,2,4,5-tetrazine(BTATz)(Ag2(BTATz)·2H2O) was synthesized by two steps, and its structure was characterized by elemental analysis, X-ray fluorescence diffraction and FT-IR spectra. The thermal behavior of the compound was studied under non-isothermal conditions using DSC and TGDTG methods, the result indicated that the thermal decomposition comprises of one endothermic and two exothermic stages, the nonisothermal decomposition reaction kinetics equation of the main exothermic stage can be expressed as:dα/dt=1014.29×{3(1-α)[-ln (1-α)]1/4/4}exp(-2.10×104/T). The values of the self-accelerating decomposition temperature(TSADT), critical temperatures of thermal explosion(Tb), thermal ignition temperature(TTIT) and the adiabatic time-to-explosion(tTIAD) for the compound were calculated as 517.10 K, 580.12 K, 531.00 K and 90.32 s, respectively. In addition, its thermal safety was evaluated.

Key words: bis(H-tetrazole-amino)-tetrazine, silver salt, thermal decomposition reaction kinetics, thermal safety

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