Australian Journal of Chemistry Australian Journal of Chemistry Society
An international journal for chemical science
RESEARCH ARTICLE

Ni/MWCNT-Supported Palladium Nanoparticles as Magnetic Catalysts for Selective Oxidation of Benzyl Alcohol

Mingmei Zhang A , Qian Sun A , Zaoxue Yan A , Junjie Jing A , Wei Wei A , Deli Jiang A , Jimin Xie A B and Min Chen A

A School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, China.

B Corresponding author. Email: Xiejm391@sohu.com

Australian Journal of Chemistry 66(5) 564-571 http://dx.doi.org/10.1071/CH12484
Submitted: 23 October 2012  Accepted: 11 January 2013   Published: 20 February 2013

Abstract

Well dispersed Pd@Ni bimetallic nanoparticles on multi-walled carbon nanotubes (Pd@Ni/MWCNT) are prepared and used as catalysts for the oxidation of benzyl alcohol. Scanning electron microscopy, transmission electron microscopy, energy-dispersive X-ray spectroscopy analysis, and X-ray diffraction were performed to characterise the synthesised catalyst. The results show a uniform dispersion of Pd@Ni nanoparticles on MWCNT with an average particle size of 4.0 nm. The as synthesised catalyst was applied to the oxidation of benzyl alcohol. A 99 % conversion of benzyl alcohol and a 98 % selectivity of benzaldehyde were achieved by using the Pd@Ni/MWCNT (Pd: 0.2 mmol) catalyst with water as a solvent and H2O2 as oxidant at 80°C. The catalytic activity of Pd@Ni/MWCNT towards benzyl alcohol is higher than that of a Pd/MWCNT catalyst at the same Pd loadings. The catalyst can be easily separated due to its magnetic properties.

Graphical Abstract Image


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