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Vol. 25 No. 15 (2013): Vol 25 Issue 15

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Selectivity of Gold Catalysts for Selective Hydrogenation of Cinnamaldehyde

https://doi.org/10.14233/ajchem.2013.14864
Yingxin Liu
College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310032, Zhejiang, P.R. China
Yiming Luo
College of Pharmaceutical Science, Zhejiang University of Technology, Hangzhou 310032, Zhejiang, P.R. China
Zuojun Wei
Institute of Pharmaceutical Engineering, Department of Chemical and Biochemical Engineering, Zhejiang University, Hangzhou 310027, Zhejiang, P.R. China

Corresponding Author(s) : Yingxin Liu

yxliu@zjut.edu.cn

Asian Journal of Chemistry, Vol. 25 No. 15 (2013): Vol 25 Issue 15

Abstract

Gold nanoparticles (AuNPs), SiO2 and TiO2 supported AuNPs prepared by colloid deposition method and Au/TiO2 prepared by deposition-precipitation method (Au/TiO2-DP) were used for the liquid-phase selective hydrogenation of cinnamaldehyde. The catalysts were characterized by HRTEM, H2-TPR and XPS. Results showed that AuNPs, AuNPs/SiO2 and AuNPs/TiO2 in dried form selectively hydrogenated the C=C bond, whereas AuNPs/TiO2 treated in H2 and Au/TiO2-DP preferentially hydrogenated the conjugated C=O bond. From our data, high selectivity toward cinnamyl acohol could be mainly attributed to an electron transfer from the reduced support to gold, which creates more electron-enriched gold particles, favouring C=O hydrogenation.

Keywords

Gold catalyst Cinnamaldehyde Selective hydrogenation Cinnamyl alcohol
Liu, Y., Luo, Y., & Wei, Z. (2013). Selectivity of Gold Catalysts for Selective Hydrogenation of Cinnamaldehyde. Asian Journal of Chemistry, 25(15), 8617–8620. https://doi.org/10.14233/ajchem.2013.14864
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