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Configurational isomerization ofcis- andtrans-1,2-, 1,3-and 1,4-dimethylcyclohexanes on Rh/SiO2 catalyst

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Abstract

Configurational isomerization ofcis- andtrans-1,2-, 1,3-, and 1,4-dimethylcyclohexanes has been studied on Rh/SiO2 catalyst in the range of 373–523 K and a hydrogen partial pressure range of 13.3–100 kPa. Temperature has a small effect on the isomerization rate while this rate increases with increasing hydrogen pressure. Isomers containing axial-equatorial methyl groups were converted at higher rates than those containing diequatorial methyl groups. The difference between Rh and Pt catalysts can be interpreted by assuming that on Pt the π-bonded surface intermediates play more important role than on Rh.

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Authors and Affiliations

  1. Department of Organic Chemistry and Organic Catalysis Research Group of the Hungarian Academy of Sciences, József Attila University, Dóm tér 8, H-6720, Szeged, Hungary

    M. Bartók & F. Notheisz

Authors
  1. M. Bartók
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  2. F. Notheisz
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Dedicated to Professor Pál Tétényi on the occasion of his 70th birthday

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Bartók, M., Notheisz, F. Configurational isomerization ofcis- andtrans-1,2-, 1,3-and 1,4-dimethylcyclohexanes on Rh/SiO2 catalyst. React Kinet Catal Lett 68, 61–68 (1999). https://doi.org/10.1007/BF02475488

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  • DOI: https://doi.org/10.1007/BF02475488

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