Insight into the role of ethylene glycol on thermodynamics and nucleation kinetics of dimethyl terephthalate in mixed solvent system
作者机构：College of Chemical EngineeringShenyang University of Chemical TechnologyShenyang110142China Bejing Key Laboratoryoflonic Liquids Clean ProcessCAS Key LaboratoryofGreen Process and EngineeringState Key Laboratoryof Multiphase Complex SystemsInstitute of Process EngineeringChinese Academy of SciencesBeijing100190China School of Chemistry and Chemical EngineeringQingdao UniversityQingdao266071China Henan Institute of Advanced TechnologyZhengzhou UniversityZhengzhou450001China School of Chemical EngineeringUniversity of Chinese Academy of SciencesBeijing100049China
出 版 物：《Particuology》 (颗粒学报（英文版）)
年 卷 期：2024年第85卷第2期
页 面：1-12页
核心收录：
学科分类：081702[工学-化学工艺] 08[工学] 0817[工学-化学工程与技术] 0805[工学-材料科学与工程（可授工学、理学学位）]
基 金：supported by the National Key Research and Development Program of China(grant No.2019YFC1908201) the Key Program of National Natural Scientific Fund of China(grant No.22238011) the National Natural Science Foundation of China(grant Nos.22178364,21978291) the Natural Science Foundation of Liaoning Province(China)(grant No.2019-ZD-0083).
主 题：Dissolution Nucleation Solubility Apparent thermodynamic parameters Metastable zone width Solid-liquid interface energy
摘 要：Dissolution and nucleation are two essential processes for industrial crystallization.This paper in-vestigates the effect of ethylene glycol addition on the crystallization behavior of dimethyl terephthalate(DMT)in solution.The DMT solubility in mixed solvent system(methanol-ethylene glycol)was deter-mined by isothermal satiation approach,and the solubility was associated using seven models.The model fitting results were consistent with the experimental values.Based on the results,the metastable zone width(MSZW)of DMT was detected by the polythermal approach;the modified Sangwal s theory was used to investigate the nucleation behavior,which can provide a new way of thought for better analysis of the crystallization behavior.The results demonstrated that MSZW was associated with various elements,such as cooling rate,saturation temperature and mass fraction of ethylene glycol.The addition of ethylene glycol slowed down the nucleation rate as shown by the broadening of MSZW.We derive the solid-liquid interface energy,the nucleation driving force,the critical nucleation size and the critical Gibbs free energy according to the classical nucleation theory.It is demonstrated that the nucleation driving force and the solid-liquid interface energy are dependent and jointly influence the MSZW.
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