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Reaction Kinetics, Mechanisms and Catalysis

, Volume 114, Issue 1, pp 147–155 | Cite as

Highly selective oxidation of benzyl alcohol to benzaldehyde catalyzed by nano Au/γ-Al2O3 under environment-friendly conditions

  • Nguyen Quang Long
  • Ngo Anh Quan
Article

Abstract

The liquid phase oxidation of benzyl alcohol to benzaldehyde under environment-friendly conditions has been investigated. Water is used as a medium to replace toxic organic solvents. The reaction used hydrogen peroxide as the oxidant. The novel green reaction was catalyzed by nano Au/γ-Al2O3. Gold nanoparticles supported on gamma alumina (γ-Al2O3) were prepared by a deposition–precipitation method. These synthesized materials were characterized by several techniques such as X-ray diffraction, N2 low temperature adsorption, and transmission electron microscopy. The benzaldehyde selectivity changed depending on the supports, the Au loading and the reaction temperature. Over 98 % selectivity of benzaldehyde was observed at 60 °C after 2 h on the 2 % Au supported on γ-Al2O3 which was calcined at 550 °C.

Keywords

Environment-friendly reaction Nano gold catalyst Selective oxidation Benzaldehyde 

Notes

Acknowledgement

This research is funded by Vietnam National University HoChiMinh City (VNU-HCM) under grant number C2014-20-33.

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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2014

Authors and Affiliations

  1. 1.Faculty of Chemical EngineeringHo Chi Minh City University of TechnologyHo Chi MinhVietnam

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