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

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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.

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Acknowledgement

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

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  1. Faculty of Chemical Engineering, Ho Chi Minh City University of Technology, Ho Chi Minh, Vietnam

    Nguyen Quang Long & Ngo Anh Quan

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  1. Nguyen Quang Long
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  2. Ngo Anh Quan
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Correspondence to Nguyen Quang Long.

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Long, N.Q., Quan, N.A. Highly selective oxidation of benzyl alcohol to benzaldehyde catalyzed by nano Au/γ-Al2O3 under environment-friendly conditions. Reac Kinet Mech Cat 114, 147–155 (2015). https://doi.org/10.1007/s11144-014-0773-4

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  • DOI: https://doi.org/10.1007/s11144-014-0773-4

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