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Diffusion effects in the hydrogenation of 3-methyl crotonaldehyde over zeolite-supported Ru

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Abstract

The activity and selectivity in gas-phase hydrogenation of the unsaturated aldehyde 3-methyl crotonaldehyde (UAL) over zeolite-supported Ru was found to depend markedly on the partial pressures of the two reactants in the gas phase, with the rate increasing as the ratio\(P_{UAL} /P_{H_2 }\) decreased. Anomalously low apparent activation energies were found compared to the same reaction over Ru/SiO2, and secondary reactions to produce the totally hydrogenated product occurred much more readily in the zeolite-supported Ru. These observations led to the suggestion that these reactions were under diffusion control.

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Authors and Affiliations

  1. Department of Chemical Engineering, University of Pittsburgh, 15261, Pittsburgh, PA, USA

    Akshay Waghray, Rachid Oukaci & Donna G. Blackmond

Authors
  1. Akshay Waghray
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  2. Rachid Oukaci
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  3. Donna G. Blackmond
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Waghray, A., Oukaci, R. & Blackmond, D.G. Diffusion effects in the hydrogenation of 3-methyl crotonaldehyde over zeolite-supported Ru. Catal Lett 14, 115–122 (1992). https://doi.org/10.1007/BF00764225

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  • DOI: https://doi.org/10.1007/BF00764225

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