title: A stable single-site palladium catalyst for hydrogenations.
abstract: We report the preparation and hydrogenation performance of a single-site palladium catalyst that was obtained by the anchoring of Pd atoms into the cavities of mesoporous polymeric graphitic carbon nitride. The characterization of the material confirmed the atomic dispersion of the palladium phase throughout the sample. The catalyst was applied for three-phase hydrogenations of alkynes and nitroarenes in a continuous-flow reactor, showing its high activity and product selectivity in comparison with benchmark catalysts based on nanoparticles. Density functional theory calculations provided fundamental insights into the material structure and attributed the high catalyst activity and selectivity to the facile hydrogen activation and hydrocarbon adsorption on atomically dispersed Pd sites.
authors.affiliation: Institute for Chemical and Bioengineering, Department of Chemistry and Applied Biosciences, ETH Zurich, Vladimir-Prelog-Weg 1, 8093 Zurich (Switzerland).
authors.forename: Gianvito
authors.initials: G
authors.lastname: Vilé
authors.affiliation: Institute for Chemical and Bioengineering, Department of Chemistry and Applied Biosciences, ETH Zurich, Vladimir-Prelog-Weg 1, 8093 Zurich (Switzerland).
authors.forename: Davide
authors.initials: D
authors.lastname: Albani
authors.affiliation: Paul Scherrer Institute, 5232 Villigen (Switzerland).
authors.forename: Maarten
authors.initials: M
authors.lastname: Nachtegaal
authors.affiliation: Max-Planck Institute of Colloids and Interfaces, Department of Colloid Chemistry, Research Campus Golm, 14424 Potsdam (Germany).
authors.forename: Zupeng
authors.initials: Z
authors.lastname: Chen
authors.affiliation: Max-Planck Institute of Colloids and Interfaces, Department of Colloid Chemistry, Research Campus Golm, 14424 Potsdam (Germany).
authors.forename: Dariya
authors.initials: D
authors.lastname: Dontsova
authors.affiliation: Max-Planck Institute of Colloids and Interfaces, Department of Colloid Chemistry, Research Campus Golm, 14424 Potsdam (Germany).
authors.forename: Markus
authors.initials: M
authors.lastname: Antonietti
authors.affiliation: Institute of Chemical Research of Catalonia (ICIQ), Av. Països Catalans 16, 43007 Tarragona (Spain). nlopez@iciq.es.
authors.forename: Núria
authors.initials: N
authors.lastname: López
authors.affiliation: Institute for Chemical and Bioengineering, Department of Chemistry and Applied Biosciences, ETH Zurich, Vladimir-Prelog-Weg 1, 8093 Zurich (Switzerland). jpr@chem.ethz.ch.
authors.forename: Javier
authors.initials: J
authors.lastname: Pérez-Ramírez
mesh_terms: D002384:Catalysis; D006865:Hydrogenation; D017348:Microscopy, Electron, Scanning Transmission; D010165:Palladium / Q000737:chemistry*
chemical_list: D010165:Palladium
keywords: carbon nitride; flow chemistry; palladium; selective hydrogenation; single-site catalysis