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The Influence of the Gold Particle Size on the Catalytic Oxidation of 5-(Hydroxymethyl)furfural

Schade, Oliver; Dolcet, Paolo; Nefedov, Alexei; Huang, Xiaohui; Saraçi, Erisa; Wöll, Christof; Grunwaldt, Jan-Dierk

Abstract:
For the production of chemicals from biomass, new selective processes are required. The selective oxidation of 5-(Hydroxymethyl)furfural (HMF), a promising platform molecule in fine chemistry, to 2,5-furandicarboxylic acid (FDCA) is considered a promising approach and requires the oxidation of two functional groups. In this study, Au/ZrO2 catalysts with different mean particle sizes were prepared by a chemical reduction method using tetrakis(hydroxymethyl)phosphonium chloride (THPC) and tested in HMF oxidation. The catalyst with the smallest mean particle size (2.1 nm) and the narrowest particle size distribution was highly active in the oxidation of the aldehyde moiety of HMF, but less active in alcohol oxidation. On the other hand, increased activity in FDCA synthesis up to 92% yield was observed over catalysts with a larger mean particle size (2.7 nm), which had a large fraction of small and some larger particles. A decreasing FDCA yield over the catalyst with the largest mean particle size (2.9 nm) indicates that the oxidation of both functional groups require different particle sizes and hint at the presence of an optimal particle size for both oxidation steps. ... mehr

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Verlagsausgabe §
DOI: 10.5445/IR/1000117906
Veröffentlicht am 30.03.2020
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Technische Chemie und Polymerchemie (ITCP)
Institut für Funktionelle Grenzflächen (IFG)
Institut für Nanotechnologie (INT)
Institut für Katalyseforschung und -Technologie (IKFT)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2020
Sprache Englisch
Identifikator ISSN: 2073-4344
KITopen-ID: 1000117906
HGF-Programm 37.03.01 (POF III, LK 01)
Catalysts and Mechanisms
Erschienen in Catalysts
Band 10
Heft 3
Seiten Article: 342
Vorab online veröffentlicht am 19.03.2020
Schlagwörter gold catalysis; selective oxidation; colloidal synthesis; 5-(hydroxymethyl)furfural; 2,5-furandicarboxylic acid; particle size; biomass conversion
Nachgewiesen in Scopus
Web of Science
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