摘要
以4-氨基-1,2,4-三唑-5-酮(ATO)为原料,通过高锰酸钾氧化制备了一种新型高能有机铵盐4,4'-偶氮-1H-1,2,4-三唑-5-酮铵盐(AZTO·H2O)。用差示扫描量热法研究了其的热行为。用Kissinger法和Ozaw a法计算了其非等温热分解反应的动力学参数。结果表明,其分解热、表观活化能和指前因子分别为247.46 k J·mol^-1、177.80 k J·mol-1和1015.74s^-1。其热爆炸临界温度和298.15 K下的摩尔热容分别为233.1℃和271.45 J·mol^-1·K^-1。它的绝热至爆炸时间为72.8-74.7 s。描述AZTO·H2O放热分解反应的动力学方程为:dα/d T=10^15.74/β×4(1-α)[-ln(1-α)]^3/4 exp(-1.774×10^5/RT)。
A new high-energy organic ammonium salt4,4'-azo-1H-1,2,4-triazol-5-one ammonium salt(AZTO · H2O) was synthesized via potassium permanganate oxidation using 4-amino-1,2,4-triazol-5-one(ATO) as starting material.The thermal behaviors of AZTO · H2O was studied by differential scanning calorimetry.The kinetic parameters of non-isothermal exothermic decomposition reaction were calculated by Kissinger method and Ozawa method.Results show that the decomposition heat,apparent activation energy and pre-exponential factor of AZTO · H2O are 247.46 kJ · mol^-1,177.80 kJ · mol^-1 and 10^15.74s^-1 respectively.The critical temperature of thermal explosion and molar heat capacity at 298.15 K for AZTO · H2O is 233.10 ℃ and 271.45 J · mol^-1 · K^-1,respectively.The adiabatic time-to-explosion is between 72.8 s and 74.7 s.The kinetic equation describing the exothermic decomposition reaction of AZTO · H2O is dα/dT=10-(15.74)/β×4(1-α)[-ln(l-α)]^(3/4)exp(-1.774×10^5 /RT).
出处
《含能材料》
EI
CAS
CSCD
北大核心
2015年第8期741-745,共5页
Chinese Journal of Energetic Materials
基金
陕西省科学技术研究发展计划项目(2013K02-25)
第47批留学回国人员科研启动基金教外司留(1792)
陕西省教育厅科研计划项目(14JF025)