摘要
研究了在钛酸四丁酯催化下由苯甲酸甲酯与苯甲醇酯交换合成苯甲酸苄酯的反应动力学，分别建立了幂函数型动力学模型和反应机理动力学模型，采用复合形法拟合得到有关参数，并求得反应表观活化能为２０８．９７２×１０３ Ｊ·ｍ ｏｌ－ １。显著性检验表明两方程均有较好的拟合效果，其计算值与实验值的平均相对误差分别为８．９７５％ 和８．１３２％ 。
The kinetics of the synthesis of benzyl benzoate by transesterification of methyl benzoate with benzyl alcohol in presence of tetrabutyl titanate was investigated. Two rate equations for the reaction based on both the powder series model and the mechanism model were proposed. The kinetics equations were derived by poly parameter nonlinear optimization (complex algorithm of Box). The apparent activation energy Ea is 208.972×10 3 J·mol -1 . Variance analysis showed that the two models gave acceptable fitting accuracy. The average relative errors between the experimental data and the values of calculation of the two rate equations were 8.975% and 8.132% respectively.
出处
《化学反应工程与工艺》
CAS
CSCD
北大核心
1999年第4期382-389,共8页
Chemical Reaction Engineering and Technology
基金
化学工程国家重点实验室资助
关键词
苯甲酸苄酯
酯交换
动力学
methyl benzoate
benzyl benzoate
tetrabutyl titanate
transesterification
kinetics
