Stadler, Lisa and Homafar, Maryam and Hartl, Andreas and Najafishirtari, Sharif and Colombo, Massimo and Zboril, Radek and Martin, Petr and Gawande, Manoj B. and Zhi, Jian and Reiser, Oliver (2019) Recyclable Magnetic Microporous Organic Polymer (MOP) Encapsulated with Palladium Nanoparticles and Co/C Nanobeads for Hydrogenation Reactions. ACS SUSTAINABLE CHEMISTRY & ENGINEERING, 7 (2). pp. 2388-2399. ISSN 2168-0485,
Full text not available from this repository. (Request a copy)Abstract
Microporous organic polymers (MOPs) encapsulated with palladium nanoparticles (NPs) and immobilized on magnetic Co/C nanobeads show excellent activity in hydrogenation reactions of alkenes, alkynes, and nitro arenes with turnover frequencies (TOFs) up to 3000h(-1). The magnetic core of the nanobeads ensures an easy and fast recyclability for at least six consecutive runs by applying an external magnet to recapture the catalyst. The catalytic system reported here uses cross-linked toluene as a polymer structure and is readily prepared via a cost-efficient and versatile synthesis based on commercially available starting materials. The novel catalysts combine the advantages of a heterogeneous magnetic support with MOPs that prevent NPs from agglomeration or deactivation. In addition, the advantages of palladium NPs as exceedingly active catalyst due to their high surface-area-to-volume ratio are exploited. Furthermore, the polymeric structure can easily be varied by the change of the aromatic monomer. Introducing hydroxyl groups by 2,2'-biphenol as the monomer into the MOP, the leaching of palladium and cobalt from the catalyst can be reduced to a minimum.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | SURFACE-AREA; HETEROGENEOUS CATALYST; P-AMINOPHENOL; REDUCTION; EFFICIENT; CARBON; NANOCATALYST; SEPARATIONS; FRAMEWORKS; NETWORKS; Hydrogenation; Palladium; Microporous polymer; Magnetic nanoparticle; Nanocatalysis |
| Subjects: | 500 Science > 540 Chemistry & allied sciences |
| Divisions: | Chemistry and Pharmacy > Institut für Organische Chemie Chemistry and Pharmacy > Institut für Organische Chemie > Lehrstuhl Prof. Dr. Oliver Reiser |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 21 Apr 2020 04:41 |
| Last Modified: | 21 Apr 2020 04:41 |
| URI: | https://pred.uni-regensburg.de/id/eprint/27716 |
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