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Catalysis Letters

, Volume 146, Issue 4, pp 755–762 | Cite as

Antimony-Modified Platinum Catalysts for the Selective and Stable Oxidation of Cinnamyl Alcohol with Hydrogen Peroxide

  • Sandile Langa
  • Benias C. Nyamunda
  • Josef Heveling
Article

Abstract

Platinum-antimony and platinum-bismuth deposited on activated carbon were prepared by various methods. The materials were characterized by nitrogen physisorption, X-ray diffraction and high-resolution transmission electron microscopy. The samples were tested as catalysts for the selective oxidation of cinnamyl alcohol to cinnamaldehyde, using H2O2 as the oxidant. 5%Pt–5%Sb/C shows selectivities in excess of 98 % in both water and toluene as the reaction medium. In comparison, state-of-the art bismuth catalysts give selectivities of 73–95 % (in water) and 84 % (in toluene).

Graphical Abstract

Keywords

Selective oxidation Hydrogen peroxide Platinum Antimony Sonication Cinnamyl alcohol Cinnamaldehyde 

Notes

Acknowledgments

This material is based upon work supported financially by the National Research Foundation of South Africa under Grant Unique Number 63266. The authors thank Dr. Sabine Verryn (XRD Analytical and Consulting, Pretoria) for help with the interpretation of X-ray diffraction data, and Evonik (Germany) for a free catalyst sample.

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Copyright information

© Springer Science+Business Media New York 2016

Authors and Affiliations

  • Sandile Langa
    • 1
  • Benias C. Nyamunda
    • 1
  • Josef Heveling
    • 1
    • 2
  1. 1.Department of ChemistryTshwane University of TechnologyPretoriaSouth Africa
  2. 2.Institute for NanoEngineering ResearchTshwane University of TechnologyPretoriaSouth Africa

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