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Selective oxidation of 5-hydroxymethyl-2-furfural using supported gold-copper nanoparticles

Pasini, Thomas, Piccinini, Marco, Blosi, Magda, Bonelli, Rosa, Albonetti, Stefania, Dimitratos, Nikolaos, Lopez-Sanchez, Jose Antonio, Sankar, Meenakshisundaram, He, Qian, Kiely, Christopher John, Hutchings, Graham John and Cavani, Fabrizio 2011. Selective oxidation of 5-hydroxymethyl-2-furfural using supported gold-copper nanoparticles. Green Chemistry 13 (8) , pp. 2091-2099. 10.1039/c1gc15355b

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Abstract

The oxidation of 5-hydroxymethyl-2-furfural was studied under mild reaction conditions using TiO2-supported Au and Au–Cu catalysts synthesized from pre-formed nanoparticles. Bimetallic gold-copper catalysts display superior activity as compared to monometallic gold. Moreover, after reaction, the bimetallic Au–Cu catalysts can be recovered by filtration and reused without significant loss of activity and selectivity whereas gold materials are not stable. STEM-HAADF imagining and XEDS spectra obtained from bimetallic materials show that particles are homogeneous AuCu alloys. No AuCu ordering or segregation effects were noted from these analyses, and the Au:Cu ratio was quite consistent from particle-to-particle irrespective of its absolute size, proving the efficiency of the original method of synthesis utilized. Isolation effects of gold by copper in the alloy nanoparticles is imagined to play a pivotal role in the reaction. The effect of oxygen pressure, metal loading, reaction time, amount of base and temperature were studied in detail and a 99% yield of furandicarboxylic acid was achieved under optimized reaction conditions.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Cardiff Catalysis Institute (CCI)
Chemistry
Subjects: Q Science > QD Chemistry
Publisher: RSC
ISSN: 1463-9262
Last Modified: 04 Jun 2017 02:52
URI: http://orca-mwe.cf.ac.uk/id/eprint/13132

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