Catalysis Letters

, Volume 1, Issue 10, pp 311–316 | Cite as

Direct observation of transition state selectivity: Low temperature cyclization of dienes inside H-mordenite and H-ZSM-5 channels

  • A. V. Kucherov
  • A. A. Slinkin
  • K. M. Gitis
  • G. V. Isagulants
Article

Abstract

The analysis of the ESR-spectra obtained upon the sorption of dienes and olefins on H-mordenite shows that molecules of dienes are not very reactive in oligomerization inside HM-channels. Warming of HM with presorbed 1,4-pentadiene or 1,5-hexadiene results in the selective cyclization of molecules inside the HM channels. In contrast cyclization of dienes does not take place inside the narrower channels of H-ZSM5 in spite of the fact that the nature of both acid and redox sites in these two zeolites is the same. This clearly demonstrates the reality of transition state selectivity.

Keywords

Physical Chemistry Zeolite Catalysis Oligomerization Transition State 

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Copyright information

© J.C. Baltzer A.G. Scientific Publishing Company 1988

Authors and Affiliations

  • A. V. Kucherov
    • 1
  • A. A. Slinkin
    • 1
  • K. M. Gitis
    • 1
  • G. V. Isagulants
    • 1
  1. 1.N.D. Zelinsky Institute of Organic ChemistryUSSR Academy of SciencesMoscow

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