酯交换法制备乙酸正丁酯动力学研究
发布时间：2019-06-30 21:59
【摘要】：为了给乙酸正丁酯的工业生产提供动力学支持,文章在间歇搅拌釜式反应器中利用酯交换法将乙酸甲酯转化为乙酸正丁酯。首先筛选出Si-3为最优催化剂,然后考察了转速、反应温度、催化剂用量、醇酯比等因素对反应过程的影响,确定较优的实验条件为转速400 r/min,反应温度70℃,催化剂用量(质量分数)20%,醇酯比(摩尔比)为1.25∶1。在323—343 K下,将实验数据拟合后得到酯交换反应的动力学方程。正反应速率常数为6 291.15 L/(mol·s),正反应活化能50 134.7 J/mol;逆反应速率常数为137.72 L/(mol·s),逆反应活化能38 324 J/mol。通过实验与计算值的比较验证,此宏观动力学方程合理,可用于模拟计算。
[Abstract]:In order to provide kinetic support for the industrial production of n-Butyl Acetate, methyl acetate was converted to n-Butyl Acetate by transesterification in an batch stirred tank reactor. First, Si-3 was selected as the optimal catalyst, and then the effects of rotating speed, reaction temperature, catalyst dosage and alcohol-ester ratio on the reaction process were investigated. The optimum experimental conditions were determined as follows: rotating speed 400r 路min, reaction temperature 70 鈩，
本文编号：2508292
[Abstract]:In order to provide kinetic support for the industrial production of n-Butyl Acetate, methyl acetate was converted to n-Butyl Acetate by transesterification in an batch stirred tank reactor. First, Si-3 was selected as the optimal catalyst, and then the effects of rotating speed, reaction temperature, catalyst dosage and alcohol-ester ratio on the reaction process were investigated. The optimum experimental conditions were determined as follows: rotating speed 400r 路min, reaction temperature 70 鈩，
本文编号：2508292
本文链接：https://www.wllwen.com/shekelunwen/minzhuminquanlunwen/2508292.html
