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

  • Thashini Chetty
  • Venkata D. B. C. Dasireddy
  • Holger B. FriedrichEmail author
Article
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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%).

Graphical Abstract

Keywords

Selective hydrogenation Aldehydes Alkenes Silver Alumina 

Notes

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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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  • Thashini Chetty
    • 1
  • Venkata D. B. C. Dasireddy
    • 1
  • Holger B. Friedrich
    • 1
    Email author
  1. 1.Catalysis Research Group, School of Chemistry and PhysicsUniversity of KwaZulu-NatalDurbanSouth Africa

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