Kainz, Quirin M. and Linhardt, Roland and Grass, Robert N. and Vile, Gianvito and Perez-Ramirez, Javier and Stark, Wendelin J. and Reiser, Oliver (2014) Palladium Nanoparticles Supported on Magnetic CarbonCoated Cobalt Nanobeads: Highly Active and Recyclable Catalysts for Alkene Hydrogenation. ADVANCED FUNCTIONAL MATERIALS, 24 (14). pp. 2020-2027. ISSN 1616-301X, 1616-3028
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Palladium nanoparticles are deposited on the surface of highly magnetic carbon-coated cobalt nanoparticles. In contrast to the established synthesis of Pd nanoparticles via reduction of Pd(II) precursors, the microwave decomposition of a Pd(0) source leads to a more efficient Pd deposition, resulting in a material with considerably higher activity in the hydrogenation of alkenes. Systematic variation of the Pd loading on the carbon-coated cobalt nanoparticle surface reveals a distinct trend to higher activities with decreased loading of Pd. The activity of the catalyst is further improved by the addition of 10 vol% Et2O to iso-propanol that is found to be the solvent of choice. With respect to activity (turnover frequencies up to 11 095 h(-1)), handling, recyclability through magnetic decantation, and leaching of Pd (6 ppm/cycle), this novel magnetic hybrid material compares favorably to conventional Pd/C or Pd@CNT catalysts.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | SEMI-HETEROGENEOUS CATALYST; MIYAURA COUPLING REACTION; GREEN CHEMISTRY; PD NANOPARTICLES; SUZUKI REACTION; HECK REACTIONS; ARYL HALIDES; NANOCATALYSTS; GRAPHENE; NANOMAGNETS; magnetic nanoparticles; hydrogenation; palladium nanoparticles; microwave synthesis; catalysts; hybrid nanomaterials |
| Subjects: | 500 Science > 540 Chemistry & allied sciences |
| Divisions: | Chemistry and Pharmacy > Institut für Organische Chemie > Lehrstuhl Prof. Dr. Oliver Reiser |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 14 Nov 2019 14:49 |
| Last Modified: | 14 Nov 2019 14:49 |
| URI: | https://pred.uni-regensburg.de/id/eprint/10350 |
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