Bimetallic Nanoparticles in Supported Ionic Liquid Phases as Multifunctional Catalysts for the Selective Hydrodeoxygenation of Aromatic Substrates

• Published in: Angewandte Chemie International Edition 2018-09, Vol.57 (39), p.12721-12726
• Main Authors: Offner‐Marko, Lisa, Bordet, Alexis, Moos, Gilles, Tricard, Simon, Rengshausen, Simon, Chaudret, Bruno, Luska, Kylie L., Leitner, Walter
• Format: Article
• Language: English
• Subjects: bimetallic nanoparticles; Bimetals; Carbonyl groups; Carbonyls; Catalysis; Catalysts; Chemical Sciences; Communication; Communications; hydrodeoxygenation; Hydrogenolysis; Ionic liquids; Ions; Iron; Ketones; Liquid phases; Nanoparticles; Reagents; Ruthenium; Substrates; supported ionic liquid phases
• ISSN: 1433-7851; 1521-3773
• DOI: 10.1002/anie.201806638

Bimetallic iron–ruthenium nanoparticles embedded in an acidic supported ionic liquid phase (FeRu@SILP+IL‐SO3H) act as multifunctional catalysts for the selective hydrodeoxygenation of carbonyl groups in aromatic substrates. The catalyst material is assembled systematically from molecular components to combine the acid and metal sites that allow hydrogenolysis of the C=O bonds without hydrogenation of the aromatic ring. The resulting materials possess high activity and stability for the catalytic hydrodeoxygenation of C=O groups to CH2 units in a variety of substituted aromatic ketones and, hence, provide an effective and benign alternative to traditional Clemmensen and Wolff–Kishner reductions, which require stoichiometric reagents. The molecular design of the FeRu@SILP+IL‐SO3H materials opens a general approach to multifunctional catalytic systems (MM′@SILP+IL‐func). A bimetallic, bifunctional catalyst composed of iron–ruthenium nanoparticles immobilized on an acid‐functionalized supported ionic liquid phase (FeRu@SILP+IL‐SO3H) was developed. This catalyst showed high activity for the hydrodeoxygenation of aromatic ketones and excellent selectivity towards aromatic deoxygenation products.