Transesterification of DMT with EG in the Presence of Metal Catalyst

금속촉매하 DMT와 EG간 에스테르교환반응

  • Jung, Byung-Ok (Department of Food Science and Technology, Seoul National University of Technology) ;
  • Choi, Young-Ju (Department of Food Science and Technology, Seoul National University of Technology) ;
  • Kim, Je-Jung (Department of Food Science and Technology, Seoul National University of Technology) ;
  • Chung, Suk-Jin (Department of Food Science and Technology, Seoul National University of Technology) ;
  • Park, Sang-Soon (Department of Food Science and Technology, Seoul National University of Technology) ;
  • Lee, Gyong-Won (Department of Industrial Chemistry, Chungju National University)
  • 정병옥 (서울산업대학교 식품공학과) ;
  • 최영주 (서울산업대학교 식품공학과) ;
  • 김제중 (서울산업대학교 식품공학과) ;
  • 정석진 (서울산업대학교 식품공학과) ;
  • 박상순 (서울산업대학교 식품공학과) ;
  • 이경원 (충주대학교 공업화학과)
  • Received : 1999.07.07
  • Accepted : 1999.08.28
  • Published : 1999.10.10

Abstract

The transesterification of dimethyl terephthalate(DMT) with ethylene glycol(EG) was kinetically investigated in the temperature range from 190 to $240^{\circ}C$ with and without a zinc acetate(Zn) as a catalyst. The degree of reaction was calculated by the measurement of the quantity of methanol which distilled from the reaction vessel. This distillation made corrections of reactant and catalyst concentrations necessary. The effects of catalyst concentration, molar ratio of DMT and EG, types of metal compounds, and temperature on kinetics were studied. The catalytic activity of various metal compounds was excellent, in order of Ti, Zn, Sn, and Sb. Also the order of activation energy was Zn>Ti>Sn>Sb.

Keywords

transesterification;degree of reaction;catalytic activity;metal compound activation energy

References

  1. Chem. Eng. Sci. v.41 K. Ravindranath;R. A. Mashelkar
  2. J. Polym. Sci.; Macromol. Rev. v.16 A. M. Kotliar
  3. 합성섬유의 고효율 중합(IV) 양갑승;최창남;안계혁;진성룡
  4. Colln. Czech Chem Commun v.41 V. Rod;G. E. Diwani;M. Minarik;Z. Sir
  5. Colln. Czech Chem. Commun v.34 F. Mares;J. Hetflezs;V. Bazant
  6. J. Polym. Sci.; Polym Chem. Ed. v.31 W. L. Chang;T. Karalis
  7. Polymer v.14 K. Tomita;H. Ida
  8. Polymer v.16 K. Tomita;H. Ida
  9. Principles of Polymer CHemistry P. J. Flory
  10. Makromol. Chem v.171 M. Krumpolc;J. malek
  11. Rec. Trav. Chim. v.79 G. Challa
  12. Polymer v.25 T. H. Shah;J. I. Bhatty;G. A. Gamlen;D. Dollimore
  13. Chem. Eng. Sci. v.41 K. Ravindranath;R. A. Mashelkar