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Design of bimetallic Au/Cu nanoparticles in ionic liquids: Synthesis and catalytic properties in 5‐(hydroxymethyl)furfural oxidation

Uzunidis, Georgios 1; Schade, Oliver 1,2; Schild, Dieter ORCID iD icon 1,3; Grunwaldt, Jan-Dierk 1,2; Behrens, Silke 1
1 Institut für Katalyseforschung und -technologie (IKFT), Karlsruher Institut für Technologie (KIT)
2 Institut für Technische Chemie und Polymerchemie (ITCP), Karlsruher Institut für Technologie (KIT)
3 Institut für Nukleare Entsorgung (INE), Karlsruher Institut für Technologie (KIT)

Abstract:

In alloyed nanoparticles, synergistic electronic and/or geometric effects may enhance the catalytic properties compared to their monometallic counterparts. Herein, we address the synthesis of bimetallic Au/Cu nanoparticles with different compositions by wet chemical reduction in ionic liquids. The nanoparticles were successively supported on carbon. The ionic liquid could be recycled after synthesis. Annealing of the carbon-supported NPs at 400 °C led to NPs of the ordered intermetallic L1$_{0}$ AuCu phase. The nanoparticle-derived catalysts were characterized by X-ray diffraction analysis, transmission electron microscopy, X-ray photoelectron spectroscopy and optical emission spectroscopy with inductively coupled plasma. Oxidation of biomass-derived furans is a prominent process for biomass transformation into value-added chemicals. Herein, the oxidation of 5-hydroxymethyl-2-furfural (HMF) to 2,5-furandicarboxylic acid (FDCA) was chosen as a model reaction to evaluate the effect of Cu addition and intermetallic structure on the catalytic performance. Particularly Au/Cu nanoparticles with an Au/Cu ratio of 3 : 1 showed very high conversion to FDCA.


Verlagsausgabe §
DOI: 10.5445/IR/1000136344
Veröffentlicht am 12.08.2021
Originalveröffentlichung
DOI: 10.1002/cnma.202100258
Scopus
Zitationen: 2
Web of Science
Zitationen: 2
Dimensions
Zitationen: 2
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Katalyseforschung und -technologie (IKFT)
Institut für Nukleare Entsorgung (INE)
Institut für Technische Chemie und Polymerchemie (ITCP)
Publikationstyp Zeitschriftenaufsatz
Publikationsmonat/-jahr 10.2021
Sprache Englisch
Identifikator ISSN: 2199-692X, 2199-692X
KITopen-ID: 1000136344
HGF-Programm 38.03.02 (POF IV, LK 01) Power-based Fuels and Chemicals
Weitere HGF-Programme 32.11.03 (POF IV, LK 01) Fundamental Scientific Aspects
Erschienen in ChemNanoMat
Verlag John Wiley and Sons
Band 7
Heft 10
Seiten 1108-1116
Projektinformation SPP 1708 (DFG, DFG KOORD, BE 2243/3-2)
Vorab online veröffentlicht am 22.07.2021
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Scopus
Web of Science
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