CAJ | 학술논문

用TG-DTG（热重-微分热重）联用技术研究了氨茶碱片剂在氮气气氛中的热分解行为。首先运用普适法Kissinger和Ozawa法计算了氨茶碱片剂的表观活化能E和指前因子lnA,然后运用一般积分法Coats-Redfern法和Satava-Sestak法推测了主分解阶段的最佳热分解机理,推测出热分解机理为相边界反应,求出了热分解反应的表观活化能和指前因子。几种方法求得的表观活化能和指前因子的平均值分别为113.933KJ/mol,lnA为22.101（1/min）.用malek法对所得结果进行了验证,进一步证明所得动力学参数和机理函数的正确性。
용TG-DTG（열중-미분열중）련용기술연구료안다감편제재담기기분중적열분해행위。수선운용보괄법Kissinger화Ozawa법계산료안다감편제적표관활화능E화지전인자lnA,연후운용일반적분법Coats-Redfern법화Satava-Sestak법추측료주분해계단적최가열분해궤리,추측출열분해궤리위상변계반응,구출료열분해반응적표관활화능화지전인자。궤충방법구득적표관활화능화지전인자적평균치분별위113.933KJ/mol,lnA위22.101（1/min）.용malek법대소득결과진행료험증,진일보증명소득동역학삼수화궤리함수적정학성。
The thermal decomposition kinetics of Aminophylline were investigated by means of TG–DTG（thermo gravimetry and differential thermo gravimetry） in nitrogen.The apparent activation energy E and the pre-exponential constant A were obtained by universal Kissinger method and Ozawa method.The best mechanism of main thermal decomposition is phase boundary reaction which predicted by Coat-Redfen integral equation and Satava-Sestak method.The apparent activation energy E and the pre-exponential constant A was calculated.The average apparent activation energy E and the pre-exponential constant A is 113.933KJ/mol and 22.101（1/min） respectively by the several methods.The accuracy were proved further by malek method.