Thermochemical Properties, Thermal Behavior and Decomposition Mechanism of 1,1-Diamino-2,2-dinitroethylene (DADE)
Thermochemical Properties, Thermal Behavior and Decomposition Mechanism of 1,1-Diamino-2,2-dinitroethylene (DADE)
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DOI：
10.1002/cjoc.200690034
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发表时间：
2006-02
影响因子：
5.4
通讯作者：
Hong-xu Gao;F. Zhao;R. Hu;Q. Pan;Bozhou Wang;Xuwu Yang;Yin Gao;Sheng-li Gao
中科院分区：
文献类型：
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作者：
Hong-xu Gao;F. Zhao;R. Hu;Q. Pan;Bozhou Wang;Xuwu Yang;Yin Gao;Sheng-li Gao
采用精密旋转弹量热仪、TG-DTG、DSC、快速扫描傅立叶变换红外（RSFT-IR）光谱和T-jump/FTIR等方法研究了1，1-二氨基-2，2-二硝基乙烯（DADE）的定容燃烧能ΔcU（DADE，s，298.15 K）、热行为、放热分解反应动力学和机理。测得ΔcH Δ m（DADE，s，298.15 K）为（−8518.09± 4.59）J·g−1。其标准燃烧焓ΔcU（DADE，s，298.15 K）和标准生成焓ΔfH m（DADE，s，298.15 K）分别为（−1254.00±0.68）和（−103.98±0.73）kJ·mol−1。采用Kissinger法和Ozawa法计算得到程序升温模式下第一步放热分解反应的动力学参数（表观活化能Ea和指前因子A）分别为Ek=344.35 kJ·mol-1、Ak=1034.50 s-1和Eo=335.32 kJ·mol-1。用不同方法测得DADE的热爆炸临界温度分别为206.98和207.08 °C。通过RSFT-IR和T-jump/FTIR检测其热稳定性。
The constant-volume combustion energy, ΔcU (DADE, s, 298.15 K), the thermal behavior, and kinetics and mechanism of the exothermic decomposition reaction of 1,1-diamino-2,2-dinitroethylene (DADE) have been investigated by a precise rotating bomb calorimeter, TG-DTG, DSC, rapid-scan fourier transform infrared (RSFT-IR) spectroscopy and T-jump/FTIR, respectively. The value of ΔcH⊖m (DADE, s, 298.15 K) was determined as (−8518.09± 4.59) J·g−1. Its standard enthalpy of combustion, ΔcU (DADE, s, 298.15 K), and standard enthalpy of formation, ΔfH⊖m (DADE, s, 298.15 K) were calculated to be (−1254.00±0.68) and (−103.98±0.73) kJ·mol−1, respectively. The kinetic parameters (the apparent activation energy Ea and pre-exponential factor A) of the first exothermic decomposition reaction in a temperature-programmed mode obtained by Kissinger′s method and Ozawa′s method, were Ek=344.35 kJ·mol−1, Ak=1034.50 s−1 and Eo=335.32 kJ·mol−1, respectively. The critical temperatures of thermal explosion of DADE were 206.98 and 207.08 °C by different methods. Information was obtained on its thermolysis detected by RSFT-IR and T-jump/FTIR.