Solid–liquid equilibrium of dimethyl terephthalate(DMT), dimethyl isophthalate(DMI) and dimethyl phthalate(DMP) in melt crystallization process  

作　　者：Chunyuan Wu Youwei Cheng Lijun Wang Xi Li 

机构地区：[1]Department of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China

出　　处：《Chinese Journal of Chemical Engineering》2017年第12期1735-1739,共5页中国化学工程学报（英文版）

摘　　要：The binary solid-liquid equilibrium of Dimethyl Terephthalate （DMT）, Dimethyl lsophthalate （DMI） and Dimeth- yl Phthalate （DMP） was investigated by experiment and differential scanning calorimetry （DSC）. The result demonstrated DMT/DMI and DMT/DMP systems are eutectic while DMI/DMP is a solid-solution system. The eutectic temperature of DMT/DMI system is 336.7 K and that of DMT/DMP is 271.1 K. Furthermore, a classical solid-liquid phase equilibrium model was used to fit the experimental data of the eutectic systems of DMT/DMI and DMT/ DMP and the theoretical model could describe the eutectic solid-liquid phase diagrams properly.The binary solid–liquid equilibrium of Dimethyl Terephthalate(DMT), Dimethyl Isophthalate(DMI) and Dimethyl Phthalate(DMP) was investigated by experiment and differential scanning calorimetry(DSC). The result demonstrated DMT/DMI and DMT/DMP systems are eutectic while DMI/DMP is a solid-solution system. The eutectic temperature of DMT/DMI system is 336.7 K and that of DMT/DMP is 271.1 K. Furthermore, a classical solid–liquid phase equilibrium model was used to fit the experimental data of the eutectic systems of DMT/DMI and DMT/DMP and the theoretical model could describe the eutectic solid–liquid phase diagrams properly.

关 键 词：Solid-liquid equilibrium Differential scanning calorimetry Eutectic Solid-solution Phase equilibrium model 

分 类 号：O625.523[理学—有机化学] O642.42[理学—化学]