Bimetallic synergistic Au/CuO-hydroxyapatite catalyst for aerobic oxidation of alcohols

doi:10.1016/S1872-2067(15)60854-3

Abstract

Abstract:

A catalyst consisting of Au supported on copper oxide-modified hydroxyapatite (Au/CuO-HAP) was prepared using a homogeneous deposition-precipitation method. The catalyst was characterized using atomic absorption spectrometry, N₂ adsorption-desorption, powder X-ray diffraction, transmission electron microscopy, and X-ray photoelectron spectroscopy. The catalytic performance in liquid-phase aerobic oxidation of alcohols was investigated. The catalytic activity and benzaldehyde selectivity in benzyl alcohol oxidation with the bimetallic Au/CuO-HAP catalyst were significantly better than those with monometallic Au/HAP and CuO-HAP catalysts. The conversion of benzyl alcohol and selectivity for benzaldehyde at 120 ℃ for 1.5 h under aerobic oxidation conditions were 99.7% and 98.4%, respectively. Various aromatic alcohols were selectively converted to their corresponding aldehydes or ketones over Au/CuO-HAP. The Au/CuO-HAP catalyst could be reused at least four times without loss of activity.

Key words: Heterogeneous catalysis, Gold-copper bimetallic catalyst, Aerobic oxidation of alcohols, Hydroxyapatite, Reusability

Tao Tian, Ying Liu, Xungao Zhang. Bimetallic synergistic Au/CuO-hydroxyapatite catalyst for aerobic oxidation of alcohols[J]. Chinese Journal of Catalysis, 2015, 36(8): 1358-1364.

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URL: https://www.cjcatal.com/EN/10.1016/S1872-2067(15)60854-3

https://www.cjcatal.com/EN/Y2015/V36/I8/1358

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