Título:
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P-Stereogenic Phosphines for the Stabilisation of Metal Nanoparticles. A Surface State Study
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Autor/a:
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Raluy, E.; Grabulosa, Arnald; Lavedan, P.; Pradel, C.; Müller Jevenois, Guillermo; Favier, I.; Gómez, M.
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Otros autores:
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Universitat de Barcelona |
Abstract:
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Palladium and ruthenium nanoparticles have been prepared following the organometallic precursor decomposition methodology, under dihydrogen pressure and in the presence of borane protected P-stereogenic phosphines. NMR (Nuclear Magnetic Resonance) monitoring of the corresponding syntheses has permitted to determine the optimal metal/ligand ratio for leading to small and well-dispersed nanoparticles. Exchange ligand reactions of the as-prepared materials have proven the strong interaction of the phosphines with the metal surface; only oxidative treatment using hydrogen peroxide could release the phosphine-based stabiliser from the metal surface. Pd and Ru nanoparticles have been evaluated in hydrogenation reactions, confirming the robustness of the stabilisers, which selectively permitted the hydrogenation of exocyclic C=C bonds, preventing the coordination of the aromatic rings and as a result, their hydrogenation. |
Materia(s):
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-Nanopartícules -Lligands -Hidrogenació -Nanoparticles -Ligands -Hydrogenation |
Derechos:
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cc-by (c) Raluy, E. et al., 2016
http://creativecommons.org/licenses/by/3.0/es |
Tipo de documento:
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Artículo Artículo - Versión publicada |
Editor:
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MDPI
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Compartir:
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