Study on the Isomerization Reaction of Tetrahydrodicyclopentadiene, Tetrahydrodi(methylcyclopentadiene) Using Heteropolyacid Catalyst

헤테로폴리산 촉매를 이용한 Tetrahydrodicyclopentadiene 및 Tetrahydrodi(methylcyclopentadiene)의 이성화반응 연구

  • Jeong, Byung Hun (Agency for Defense Development) ;
  • Han, Jeong Sik (Agency for Defense Development) ;
  • Kim, Seong Bo (Advanced Chemical Technology Division, Korea Research Institute of Chemical Technology) ;
  • Kang, Cheol Han (Department of Fine Chemical Engineering, Chung Nam National University) ;
  • Lee, Bum Jae (Department of Fine Chemical Engineering, Chung Nam National University)
  • Received : 2006.08.30
  • Accepted : 2006.11.23
  • Published : 2007.02.10

Abstract

The study on the isomerization reaction of endo-tetrahydrodicyclopentadiene and endo-tetrahydrodi(methylcyclopentadiene) using heteropolyacid catalyst was carried out. Exo compound was prepared from endo compound through isomerization reaction. To improve the problem of aluminum chloride as an isomerization catalyst, application of heteropolyacid was attempted. In use of Keggin type heteropolyacid, catalytic activity was extremely high at cesium substitution instead of 2.5 hydrogen atoms of $H_3PW_{12}O_{40}$. Using the cesium substituted heteropolyacid, isomerization reaction rate was faster than aluminum chloride and the effect of reaction temperature and times on reactivities were compared in isomerization of tetrahydrodicyclopentadiene and tetrahydrodi(methylcyclopentadiene).

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