Characteristics and Catalytic Activities of 12-Molybdophosphoricacid Modified by Ring Opening Polymerization of Tetrahydrofuran

테트라하이드로퓨란의 개환 중합반응에 의해 변형된 12-몰리브도인산의 특성 및 촉매 반응성

  • Park, Gyo Ik (Division of Chemical Engineering, Seoul National University) ;
  • Lee, Wha Young (Division of Chemical Engineering, Seoul National University) ;
  • Song, In Kyu (Department of Industrial Chemistry, Kangnung National University)
  • 박교익 (서울대학교 공과대학 응용화학부) ;
  • 이화영 (서울대학교 공과대학 응용화학부) ;
  • 송인규 (강릉대학교 공과대학 공업화학과)
  • Received : 1998.06.11
  • Accepted : 1998.08.18
  • Published : 1998.12.10

Abstract

Characteristics and catalytic activities of 12-molybdophosphoricacid catalysts modified by ring opening polymerization of tetrahydrofuran (THF) were studied in this work. 12-Molybdophosphoricacid catalysts modified by THF showed higher conversions and product yields than the mother acid in the vapor-phase ethanol conversion. It was believed that the enhanced catalytic activities of modified 12-molybdophosphoricacids were due to structural flexibility of heteropolyanions and weakened hydrogen bond around heteropolyanions. THF interacted with protons and crystalline water molecules of heteropolyacids. The interaction between THF and heteropolyanoins, which crystalline water molecules act as intermediary, was the dominant factor deciding the catalytic activities of modified 12-molybophosphoricacids.

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