1. Recoverable rhodium nanoparticles: Synthesis, characterization and catalytic performance in hydrogenation reactions
- Author
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Marcos José Jacinto, Liane M. Rossi, Pedro Kunihiko Kiyohara, R. F. Jardim, and S. H. Masunaga
- Subjects
Process Chemistry and Technology ,Inorganic chemistry ,Magnetic separation ,Cyclohexene ,Nanoparticle ,chemistry.chemical_element ,Heterogeneous catalysis ,Catalysis ,law.invention ,Rhodium ,chemistry.chemical_compound ,chemistry ,Decantation ,law ,Filtration - Abstract
We here report the first magnetically recoverable Rh(0) nanoparticle-supported catalyst with extraordinary recovery and recycling properties. Magnetic separation has been suggested as a very promising technique to improve recovery of metal-based catalysts in liquid-phase batch reactions. The separation method is significantly simple, as it does not require filtration, decantation, centrifugation, or any other separation technique thereby, overcoming traditional time- and solvent-consuming procedures. Our new magnetically separable catalytic system, comprised of Rh nanoparticles immobilized on silica-coated magnetite nanoparticles, is highly active and could be reused for up to 20 times for hydrogenation of cyclohexene (180,000 mol/molRh) and benzene (11,550 mol/molRh) under mild conditions.
- Published
- 2008
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