林产化学与工业2017，Vol.37Issue(3)：101-106,6.DOI:10.3969/j.issn.0253-2417.2017.03.014
非等温热重法研究12-溴代脱氢枞酸甲酯热解动力学
Decomposition Kinetics Research of 12-Bromodehydroabietate Methyl Ester by Non-isothermal Thermogravimetry
摘要
Abstract
The non-isothermal decomposition kinetics of 12-bromodehydroabietate methyl ester(BME) were studied by nonisothermal thermogravimetric analysis at various heating rates of 5,10,15 and 20 K/min.The activation energy E and the preexponential A were analyzed by Kissinger and Flynn-Wall-Ozawa (FWO) method,respectively.The thermal decomposition mechanism and kinetic parameters were studied by (S)atava-(S)esták method combined 34 kinds of dynamic functions.The results showed that the thermal decomposition mechanism of BME was controlled by the process of random nuclear formation and the nuclear growing,the reaction order n was 3/4,the integral form of kinetic function belonged to G(α) =[-ln(1-α)] 3/4,the apparent activation energy E was 85.71 kJ/mol,pre-exponential factor A was 1.12 × 107 s-1,and the corresponding thermal decomposition dynamic function was dα/dt =1.12 × 107 exp (-85.71 × 103/RT) × 4/3 (1-α) [-ln (1-α)] 1/4.The function's correlation coefficient is 0.983 3,standard deviation is 0.05.关键词
12-溴代脱氢枞酸甲酯/非等温热重法/袁观活化能/热分解机理Key words
12-bromodehydroabietate methyl ester/non-isothermal thermogravimetric/apparent activation energy/thermal decomposition mechanism分类
化学化工引用本文复制引用
刘磊,蒋丽红,杨晨,王亚明,宋湛谦,沈明贵..非等温热重法研究12-溴代脱氢枞酸甲酯热解动力学[J].林产化学与工业,2017,37(3):101-106,6.基金项目
国家自然科学基金资助项目(U1202265) （U1202265）
