首页|Insight into the role of ethylene glycol on thermodynamics and nucleation kinetics of dimethyl terephthalate in mixed solvent system

Insight into the role of ethylene glycol on thermodynamics and nucleation kinetics of dimethyl terephthalate in mixed solvent system

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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.

DissolutionNucleationSolubilityApparent thermodynamic parametersMetastable zone widthSolid-liquid interface energy

Yujin Zhang、Chunyan Shi、Jing Tang、Li Liu、Dongxia Yan、Qing Zhou、Xingmei Lu、Songyan Jia

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College of Chemical Engineering,Shenyang University of Chemical Technology,Shenyang,110142,China

Beijing Key Laboratory of Ionic Liquids Clean Process,CAS Key Laboratory of Green Process and Engineering,State Key Laboratory of Multiphase Complex Systems,Institute of Process Engineering,Chinese Academy of Sciences,Beijing,100190,China

School of Chemistry and Chemical Engineering,Qingdao University,Qingdao,266071,China

Henan Institute of Advanced Technology,Zhengzhou University,Zhengzhou,450001,China

School of Chemical Engineering,University of Chinese Academy of Sciences,Beijing,100049,China

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National Key Research and Development Program of ChinaKey Program of National Natural Scientific Fund of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNatural Science Foundation of Liaoning Province(China)

2019YFC19082012223801122178364219782912019-ZD-0083

2024

10.1016/j.partic.2023.03.010

颗粒学报(英文版)
中国颗粒学会　中国科学院过程工程研究所

颗粒学报(英文版)

CSTPCD
影响因子：0.632
ISSN：1674-2001
年,卷(期)：2024.85(2)
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