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Sustainable Synthesis of Magnetic Ruthenium-Coated Iron Nanoparticles and Application in the Catalytic Transfer Hydrogenation of Ketones
- Hudson, Reuben, Chazelle, Vanessa, Bateman, Mary, Roy, Ranjan, Li, Chao-Jun, Moores, Audrey
- ACS sustainable chemistry 2015 v.3 no.5 pp. 814-820
- X-ray photoelectron spectroscopy, aldehydes, catalysts, copper, hydrogenation, iron, iron oxides, ketones, leaching, nanoparticles, palladium, transmission electron microscopy
- The galvanic reduction of catalytically active metals onto iron/iron oxide core/shell nanoparticles is a rapid, efficient and sustainable method to access new catalysts, already explored with copper and palladium. Herein, we present novel bimetallic ruthenium–iron nanoparticles synthesized by this method. This material constitutes a magnetically recoverable heterogeneous catalyst for transfer hydrogenation with a pronounced selectivity for ketones over aldehydes and nitro groups. The nanoparticles are recyclable up to five times without a significant decrease in activity or leaching, and characterized by transmission electron microscopy, X-ray photoelectron spectroscopy and inductively coupled plasma.