卡托辛对高氯酸铵热分解动力学的影响

摘要

采用DSC、TG法研究了高氯酸铵(AP)和高氯酸铵/卡托辛(Catocene)两个体系的热分解行为,分别采用Ozawa和Kissinger方法计算了热分解反应的活化能Ea1、Ea2、Ea3和指前因子InA1、InA2、InA3等动力学参数.结果表明,加入卡托辛后,DSC曲线在180℃附近多出一个放热峰,归属于卡托辛的氧化放热,AP低、高温分解表观活化能分别降低了13.2,7.1kJ·mol-1.利用Satava-Sestak方法确定了两体系热分解的机理函数,同时探讨了卡托辛对高氯酸铵分解促进作用的机理.%The thermal decomposition behaviors of AP and AP/Catocene were studied by DSC and TG analysis, and the activation energy Ea] , Eia2, Ea3 and the pre-exponential factor IgA1 , IgA2, IgA3 were calculated by Ozawa and Kissinger method. In results of DSC , there is a additional exothermic peaks at 180 ℃ with Catocene which belongs to the decompostion of Catocene. CFP makes the values of E for low and high temperature decomposition reaction of AP decrease 13.2 k| · mol-1 and 7.1 kj · mol-1, respectively. The most probable mechanism functions of the thermal decomposition reaction of AP and AP/catocene were determined based on Satava-Sestak method. The mechanism of accelerating effects was discussed.