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Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/118960
P-Stereogenic Phosphines for the Stabilisation of Metal Nanoparticles. A Surface State Study
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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.
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RALUY, Eva, et al. P-Stereogenic Phosphines for the Stabilisation of Metal Nanoparticles. A Surface State Study. Catalysts. 2016. Vol. 6, num. 213. ISSN 2073-4344. [consulted: 18 of June of 2026]. Available at: https://hdl.handle.net/2445/118960