Thermal decomposition of energetic materials 58. Chemistry of ammonium nitrate and ammonium dinitramide near the burning surface temperature
Thermal decomposition of energetic materials 58. Chemistry of ammonium nitrate and ammonium dinitramide near the burning surface temperature
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DOI：
10.1016/0010-2180(93)90206-i
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发表时间：
1993
影响因子：
4.4
通讯作者：
T. Brill;P. Brush;D. Patil
中科院分区：
文献类型：
--
作者：
T. Brill;P. Brush;D. Patil
硝酸铵（AN），NH 4 NO3，和二硝酰胺铵（ADN），NH 4 [N（NO2）2]，在接近燃烧表面的温度下的薄膜的快速热解化学描述通过使用T-跳跃/傅里叶变换红外（FTIR）光谱。每种气体产物的出现顺序和数量与过程的净吸热性和吸热性相结合，使得能够开发出一致的反应方案。AN的冷凝相的分解在高达至少33 atm时是净吸热的。虽然解离升华和N2 O和H2O的形成占主导地位的整个过程中，两个额外的反应的叠加是需要考虑从AN观察到的所有产品。ADN在分解过程中很早就变得高度放热。两个化学计量反应分支的叠加解释了这种行为。光谱和热响应与NH3的反应一致，NO2是AN在33 atm以上分解过程中释放的主要热源，ADN在1 atm及更高。
The rapid pyrolysis chemistry of films of ammonium nitrate (AN), NH4NO3, and ammonium dinitramide (ADN), NH4[N(NO2)2], at temperatures approximating a burning surface is described by the use of T-jump/Fourier transform infrared (FTIR) spectroscopy. The sequence of appearance and amounts af each gas product combined with the net endothermicity and exothermicity of the process at each time enables consistent reaction schemes to be developed. The decomposition of the condensed phase of AN is net endothermic up to at least 33 atm. Although dissociative sublimation and the formation of N2O and H2O dominate the overall process, the superposition of two additional reactions is needed to account for all of the products observed from AN. ADN becomes highly exothermic very early in the decomposition process. The superposition of two stoichiometric reaction branches explains this behavior. The spectra and thermal responses are consistent with the reaction of NH3, with NO2being the major source of heat released during the decomposition of AN above 33 atm and ADN at 1 atm and higher.