Aerobic Oxidation of 5-(Hydroxymethyl)furfural in Ionic Liquids with Solid Ruthenium Hydroxide Catalysts

Aerobic Oxidation of 5-(Hydroxymethyl)furfural in Ionic Liquids with Solid Ruthenium Hydroxide Catalysts

The aerobic oxidation of 5-(hydroxymethyl)furfural was investigated over solid ruthenium hydroxide catalysts in ionic liquids at elevated temperatures and pressures. Several different catalyst supports were tested in combination with various ionic liquids. The best result was obtained in [EMIm][OAc]...

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Veröffentlicht in:Catalysis letters 2012-09, Vol.142 (9), p.1089-1097
Hauptverfasser: Ståhlberg, Tim, Eyjólfsdóttir, Ester, Gorbanev, Yury Y., Sádaba, Irantzu, Riisager, Anders
Format: Artikel
Sprache:eng
Schlagworte:
Acetates
Catalysis
Catalysts
Catalytic activity
Catalytic oxidation
Chemical properties
Chemistry
Chemistry and Materials Science
Exact sciences and technology
General and physical chemistry
High temperature
Hydroxides
Hydroxymethylfurfural
Industrial Chemistry/Chemical Engineering
Ionic liquids
Ions
Lanthanum oxides
Organometallic Chemistry
Oxidation
Oxidation-reduction reaction
Physical Chemistry
Ruthenium
Solvents
Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry
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Zusammenfassung:The aerobic oxidation of 5-(hydroxymethyl)furfural was investigated over solid ruthenium hydroxide catalysts in ionic liquids at elevated temperatures and pressures. Several different catalyst supports were tested in combination with various ionic liquids. The best result was obtained in [EMIm][OAc] at 100 °C with 30 bar of oxygen over Ru(OH) x /La 2 O 3 which afforded 48 % of 2,5-furandicarboxylic acid and 12 % of 5-hydroxymethyl-2-furancarboxylic acid. During use the catalysts were found to leach some of the metal inventory. However, the leached Ru species did not contribute to the catalytic activity, thus verifying that the catalytic oxidation proceeded heterogeneously under the applied reaction conditions. Graphical Abstract
ISSN:1011-372X
1572-879X
DOI:10.1007/s10562-012-0858-5