摘要
采用2,6-对萘二甲酸二甲酯(DMN)与乙二醇(EG)制备聚萘二甲酸乙二醇酯(PEN)的中间体2,6-对萘二甲酸乙二醇酯(BHEN),通过测量副产物甲醇的排出体积跟踪反应进程,并利用总包动力学方程计算该反应的速率常数、活化能等动力学参数,比较了副产物甲醇的排出对动力学参数的影响。结果表明,酯交换反应有副产物排出,在研究动力学时,不应忽略副产物的排出产生的影响。
Taking the change of volume into account,we studied the kinetics of BHEN as an important intermediate for the synthesis of polyethylene naphthalate( PEN),which was prepared from 2,6-dicarbomethoxynaphthalene(DMN) and ethylene glycol(EG). The kinetics parameters such as the rate constants and active energy were given in this paper. The effect of the removal of the by-product methanol on the kinetic parameters was compared. The results show that by-products are excreted in the transesterification reaction,and the influence of the by-product discharge should not be ignored in the study of kinetics.
作者
张晓霞
蒋君芝
董丹秀
代本祝
徐迪均
张伟禄
ZHANG Xiao-xia1, JIANG Jun-zhi1 , DONG Dan-xiu1 , DAI Ben-zhu2, XU Di-jun2, ZHANG Wei-lu1(1. Institute of Applied Chemistry, CoUege of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325027, China ; 2. Wenzhou Watt Hot Melt Adhesive Stock Co. , Ltd, Rui' an 325200,Chin)
出处
《聚酯工业》
CAS
2018年第3期16-18,共3页
Polyester Industry
基金
温州市公益项目(S20150012)和(W20170006)