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Issue 11, 2013
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Tuning the properties of PdAu bimetallic nanocatalysts for selective hydrogenation reactions

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Abstract

Bimetallic PdAu nanocatalysts have been prepared in a one-step synthesis using a colloidal approach, with a variety of techniques employed to determine their structure. The supported nanocatalysts show good performance in the selective hydrogenation of 2-chloronitrobenze to 2-chloroaniline and the direct formation of hydrogen peroxide. The reaction rate for 2-chloronitrobenzene hydrogenation increased with the decrease of Pd/Au ratio, while the selectivity was only slightly affected. The structure of the bimetallic nanoparticles had a significant impact, with a Pd-rich surface offering superior selectivity and reaction rates. In contrast, for hydrogen peroxide synthesis, it was found that there was an optimal quantity of gold required to ensure high productivity and this is ascribed to avoiding the formation of Au rich alloy phase and electronic effects hindering the necessary O2 adsorption and activation.

Graphical abstract: Tuning the properties of PdAu bimetallic nanocatalysts for selective hydrogenation reactions

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Publication details

The article was received on 15 Apr 2013, accepted on 21 May 2013 and first published on 23 May 2013


Article type: Paper
DOI: 10.1039/C3CY00255A
Catal. Sci. Technol., 2013,3, 2934-2943

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    Tuning the properties of PdAu bimetallic nanocatalysts for selective hydrogenation reactions

    E. C. Corbos, P. R. Ellis, J. Cookson, V. Briois, T. I. Hyde, G. Sankar and P. T. Bishop, Catal. Sci. Technol., 2013, 3, 2934
    DOI: 10.1039/C3CY00255A

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