Catalysis Letters

, Volume 1, Issue 5, pp 127–131 | Cite as

The role of the carbonaceous overlayer in the competitive hydrogenation of cyclopropanes and olefins

  • István Pálinkó
  • Ferenc Notheisz
  • Mihály Bartók

Abstract

In the competitive hydrogenation of olefin-cyclopropane mixtures (2-Me-2-butene + 1,1-diMe-cyclopropane and 2,4-diMe-2-pentene + 1,1,2,2-tetraMe-cyclopropane) over silica supported Pt, Pd and Rh catalysts at 318 K and 373 K, only the olefin is hydrogenated. The other component does not react even after the complete hydrogenation of the olefin. The olefin creates a hydrogen-rich carbonaceous overlayer which is the active phase for its hydrogenation but it is a permanent poison for the hydrogenative ring opening of the cyclopropane ring. On Ni/SiO2 at 473 K, however, such an overlayer does not form and both reactants transform in parallel in a complex way.

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Copyright information

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

Authors and Affiliations

  • István Pálinkó
    • 1
  • Ferenc Notheisz
    • 1
  • Mihály Bartók
    • 1
  1. 1.Department of Organic ChemistryAttila József UniversitySzegedHungary

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