The solvent determines the product in the hydrogenation of aromatic ketones using unligated RhCl<sub>3</sub> as catalyst precursor
作者:Soumyadeep Chakrabortty、Nils Rockstroh、Stephan Bartling、Henrik Lund、Bernd H. Müller、Paul C. J. Kamer、Johannes G. de Vries
DOI:10.1039/d1cy01504d
日期:——
Alkyl cyclohexanes were synthesized in high selectivity via a combined hydrogenation/hydrodeoxygenation of aromaticketones using ligand-free RhCl3 as pre-catalyst in trifluoroethanol as solvent. The true catalyst consists of rhodiumnanoparticles (Rh NPs), generated in situ during the reaction. A range of conjugated as well as non-conjugated aromaticketones were directly hydrodeoxygenated to the corresponding
An active bifunctional nickel catalyst was prepared by decomposing Ni(CO)4 to highly dispersed metallic Ni onto Hβ zeolite and first applied in hydroconverting benzyloxybenzene (BOB), which was used as a lignin-related model compound. Ni/Hβ proved to be effective for converting BOB to bicyclic cyclanes (BCCs) via CalkO bond cleavage induced by H+ addition, benzylium addition to 2- and 4-positions in
Bimetallic Nanoparticles in Supported Ionic Liquid Phases as Multifunctional Catalysts for the Selective Hydrodeoxygenation of Aromatic Substrates
作者:Lisa Offner-Marko、Alexis Bordet、Gilles Moos、Simon Tricard、Simon Rengshausen、Bruno Chaudret、Kylie L. Luska、Walter Leitner
DOI:10.1002/anie.201806638
日期:2018.9.24
Bimetallic iron–ruthenium nanoparticles embedded in an acidic supported ionic liquidphase (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
sed supported ionicliquid phase (Rh@SILP(Ph3‐P‐NTf2)) enabled the selective hydrogenation and hydrodeoxygenation of aromatic ketones. The flexible molecular approach used to assemble the individual catalyst components (SiO2, ionicliquid, nanoparticles) led to outstanding catalytic properties. In particular, intimate contact between the nanoparticles and the phosphonium ionicliquid is required for
Fast pyrolysis of biomass for bio-oil production is a direct route to renewable liquid fuels, but raw bio-oil must be upgraded in order to remove easily polymerized compounds (such as phenols and furfurals). Herein, a synthesis strategy for graphene encapsulated Ru nanoparticles (NPs) on carbon sheets (denoted as Ru@G-CS) and their excellent performance for the upgrading of raw bio-oil were reported