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

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

1.
College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, Hubei, China

Corresponding author: Xungao Zhang,
Received Date: 10 February 2015
Available Online: 27 March 2015
Fund Project: 湖北省自然科学基金(2013CFB291). (2013CFB291)

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.
- Heterogeneous catalysis,
- Gold-copper bimetallic catalyst,
- Aerobic oxidation of alcohols,
- Hydroxyapatite,
- Reusability
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