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http://dx.doi.org/10.9713/kcer.2015.53.2.253

Transesterification of Dimethyl Terephthalate with Diethylene Glycol  

Kim, Gunhyung (Department of Chemical Engineering, Chungnam National University)
Cho, Minjeong (Department of Chemical Engineering, Chungnam National University)
Jeon, Yeonghwan (Department of Chemical Engineering, Chungnam National University)
Han, Myungwan (Department of Chemical Engineering, Chungnam National University)
Kang, Kyungsuk (Siontech)
Publication Information
Korean Chemical Engineering Research / v.53, no.2, 2015 , pp. 253-261 More about this Journal
Abstract
The kinetics of the transesterification of dimethyl terephthalate (DMT) with diethylene glycol (DEG) was studied in a batch reactor. bis-hydroxyethoxytethyl-terephthalate (BHEET), which is polyester polyol monomer, can be produced by the transesterification reaction. Zinc acetate was used as a catalyst. Previous kinetic studies was carried out in a semi-batch reactor where generated methanol was removed so that reverse reactions were not considered in the kinetic expressions, resulting in inaccuracy of the kinetic model. Mathematical models of a batch reactor for the tranesterification reaction, which took the reverse reaction into account, were developed and used to characterize the reaction kinetics and the composition distribution of the reaction products. More accurate models than previous ones were obtained and found to have a good agreement between model predictions and experimental data. Effect of process variables on the esterification reaction was investigated based on the experimental and simulation results.
Keywords
Polyol; Polyester Polyol; DMT; DEG; BHEET;
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Times Cited By KSCI : 2  (Citation Analysis)
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