한국응용과학기술학회지 (Journal of the Korean Applied Science and Technology)

  • 제9권1호
  • /
  • Pages.41-46
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  • 1992
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  • 1225-9098(pISSN)
  • /
  • 2288-1069(eISSN)
한국응용과학기술학회 (The Korean Society of Applied Science and Technology)
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Dimethylphthalates와 1,4-butanediol의 에스테르 교환반응에 관한 연구

A Study on the Transesterification of Dimethylphthalate by 1,4-butanediol

  • Jeong, Soon-Wook (Dept. of Materials Science & Engineering, Kum-Oh National Institute of Technology) ;
  • Sohn, Byoung-Chung (Dept. of Chemical Engineering, Hong-Ik University)
  • 발행 : 1992.05.31
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초록

The transesterification of dimethylphthalate by 1,4-butanediol was kinetically investigated In the presence of various metal acetate catalysts at 180$^{\circ}C$. The quantity of dimethylphthalate reacted in the reaction flask was measured by gas chromatography. The transesterification was assumed to obey first-order kinetics with respect to dimethylphthalate and 1,4-butanediol, and a rate equation was derived. The linear relationship was shown between apparent rate constant and reciprocal absolute temperature, the activation energy has been calculated as 7.4kcal with lead acetate. The maximum reaction rate was appeared at the range of 1.5${\sim}$1.6 of electronegativity of metal ions.

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