Kinetic Consideration of the Transesterification of Dimethyl Terephthalate by Ethylene Glycol in the Presence of Metal Acetate Catalysts

금속초산염촉매첨가하에 에틸렌글리콜에 의한 디메틸테레프탈레이트의 에스테르교환반응에 관한 반응속도론적 고찰

The transesterification of dimethyl terphthalate by ethylene glycol was studied under conditions designed to yield bis (${\beta}$-hydroxyethyl) terephthalate as the primary product. The reaction in the presence of seven kind of metal acetate catalyst appeared more likely to follow a machanism of single second-order reaction. The data are consistent with single second-order reaction expressed in terms of the amount of methanol as a function of time, but are not sufficiently consistent with single first-order kinetics to explain the mechanism.