摘要
为研究4,10-二硝基-2,6,8,12-四氧杂-4,10-二氮杂四环[5.5.0.05,903,11]十二烷(TEX)的稳定性,建立了TEX的高效液相色谱(HPLC)分析方法,采用TG-DTG和DSC研究了TEX的热行为,测定了不同升温速率(5、10、15、20和25K/min)下TEX的分解峰温,用Kissinger方法计算了TEX放热分解反应的表观活化能(Ek)和指前因子(A),用热力学方程计算了TEX放热分解反应的活化熵(△S≠)、活化焓(△H≠)和活化吉布斯自由能(△G≠)。结果表明,TEX对热较稳定,其热分解反应的△S≠、△H≠和△G≠值分别为501.03J/(K·mol)、432.48kJ/mol、145.26kJ/mol。
To study the stability of 4,10-dinitro-2,6,8,12-tetraoxa-4,10-diazatetracyclo-[5.5.0.0^5,9 0^3,11 ]-dodecane （TEX）,a high performance liquid chromatography（HPLC）analysis method for TEX was developed.The thermal behavior of TEX was studied by thermogravimetry-derivative thermogravimetry（TG-DTG）and differential scanning calorimetry（DSC）,the peak temperatures at different heating rates（5,10,15,20 and 25 K/min）were determined. The apparent activation energy（Ek ）and preexponential constant（A）of the exothermic decomposition reaction were calculated by Kissinger′s method.Activation enthalpy（△S^≠）,activation entropy（△H^≠）and activation Gibbs free energy（△G^≠）for the exothermic decomposition reaction of TEX were calculated according to thermodynamic equations.The results indicate that TEX is stable to heat.The values of △S^≠,△H^≠ and △G^≠ are 501 .03 J/（K·mol）, 432.48 kJ/mol and 145.26 kJ/mol,respectively.
出处
《火炸药学报》
EI
CAS
CSCD
北大核心
2015年第4期27-30,共4页
Chinese Journal of Explosives & Propellants
