摘要
本文在ε-NTU法的基础上,用模拟函数理论方法,拟合DMT与EG在醋酸盐催化下的酯交换反应的动力学模型,得出了相应的反应速度表达式。结果表明:在实验条件下的酯交换反应既不是一级或二级反应,也不是三级反应,是一个二次线型反应,这也恰好证明了Yamanis对以往动力学处理怀疑的正确性。此外对模型中引入参数的物理意义进行了探讨。
Based on the method of ε-NTU, a mathematical modeling of ester-interchange reaction for dimethyl terephthalate (DMT) with ethylene glycol (EG) by acetate system was simulated, and, in addition, the corresponding kinetic equation is obtained by using the theoretical method of simulation. That is,-(dc)/(dt)=kc(c+k')where:-(dc)/(dt)= the reaction rate of the monomer, C -concentration of the monomer, θ-Suitable parameterk,k'-constant (k'=θ/k)The experimental results have showed that the ester-interchange reaction is a reaction neither first order or second order nor third order, but it is a reaction of secondary linear type. Yamanis doubted the correctness of the method that has been proved. Moreover, we have suggested the physical meaning of parameters.
出处
《高分子学报》
SCIE
CAS
CSCD
北大核心
1992年第2期236-240,共5页
Acta Polymerica Sinica
关键词
乙二醇
酯交换反应
DMT
Dimethyl terephthalate (DMT), Ethyleneglycol (EG), Simulation Kinetic, Esterinterchange reaction
