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The Continuous Flow Ag/γ-Al2O3 Catalysed Preferential Hydrogenation of Octanal in an Octanal/Octene Mixture

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Abstract

Ag/γ-Al2O3 catalysts, containing 5 and 25 wt% Ag, were synthesized by the slurry phase impregnation method. They were tested for the liquid phase continuous flow preferential hydrogenation of octanal in a mixture with octene. The catalysts were characterised by XRD, IR, BET, SEM, TEM and NH3-TPD. These catalysts showed strong preference for octanal hydrogenation, irrespective of reaction temperature or silver loading. A maximum octanal conversion of 90% with selectivity towards octanol of 94% was achieved over 25 wt% Ag/γ-Al2O3 at 180 °C with minimal octene conversion (< 3%).

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Acknowledgements

We thank the NRF and SASOL for financial support. We also thank to Dr. N. Prinsloo (SASOL) for valuable discussions and the Electron Microscopy Unit at UKZN (Westville Campus).

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Authors and Affiliations

  1. Catalysis Research Group, School of Chemistry and Physics, University of KwaZulu-Natal, Westville Campus, Private Bag X54001, Durban, 4000, South Africa

    Thashini Chetty, Venkata D. B. C. Dasireddy & Holger B. Friedrich

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  1. Thashini Chetty
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  2. Venkata D. B. C. Dasireddy
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  3. Holger B. Friedrich
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Correspondence to Holger B. Friedrich.

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Chetty, T., Dasireddy, V.D.B.C. & Friedrich, H.B. The Continuous Flow Ag/γ-Al2O3 Catalysed Preferential Hydrogenation of Octanal in an Octanal/Octene Mixture. Catal Lett 149, 2787–2793 (2019). https://doi.org/10.1007/s10562-019-02812-9

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  • DOI: https://doi.org/10.1007/s10562-019-02812-9

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