Journal of the Korean Applied Science and Technology (한국응용과학기술학회지)

The Korean Society of Applied Science and Technology (한국응용과학기술학회)
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A Study on Separation of Naphthalene from Naphthalene and 2-Methylnaphthalene Mixture by Melt and Solution Crystallization

용액과 용융결정화에 의한 나프탈렌과 2-메틸나프탈렌 혼합물로부터 나프탈렌의 분리에 관한 연구

  • Kim, Sung-Il (R&D center, Samchun Pure Chemical Ind. Co., LTD) ;
  • Jeong, Kwang-Eun (New Chemistry Division, Korea Research Institute of Chemical Technology) ;
  • Chae, Ho-Jeong (New Chemistry Division, Korea Research Institute of Chemical Technology) ;
  • Jeong, Soon-Yong (New Chemistry Division, Korea Research Institute of Chemical Technology) ;
  • Kim, Chul-Ung (New Chemistry Division, Korea Research Institute of Chemical Technology)
  • 김성일 ((주)삼전순약공업 중앙연구소) ;
  • 정광은 (한국화학연구원 신화학연구단) ;
  • 채호정 (한국화학연구원 신화학연구단) ;
  • 정순용 (한국화학연구원 신화학연구단) ;
  • 김철웅 (한국화학연구원 신화학연구단)
  • Published : 2008.06.30
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Abstract

Separation of naphthalene from naphthalene and 2-methylnaphthalene mixture has been studied by layered melt and solution crystallization using ethylalcohol. Purity and yield of naphthalene depended mainly on the cooling rate: The effective distribution coefficient ($K_{eff}$) as the degree of impurity removal was observed to decrease with the decreasing in cooling rate. Purity of naphthalene can be enhanced to $5{\sim}7%$ by melt crystallization using 90% naphthalene and the purity of naphthalene can be obtained to be 99% up by solution crystallization.

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References

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