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Catalysts 2016, 6(12), 213; doi:10.3390/catal6120213

P-Stereogenic Phosphines for the Stabilisation of Metal Nanoparticles. A Surface State Study

1
Université de Toulouse 3—Paul Sabatier, Laboratoire Hétérochimie Fondamentale et Appliquée (LHFA), 118 Route de Narbonne, 31062 Toulouse CEDEX 9, France and CNRS, LHFA UMR 5069, 31062 Toulouse CEDEX 9, France
2
Departament de Química Inorgànica i Orgànica, Secció de Química Inorgànica, Universitat de Barcelona, Martí i Franquès 1-11, 08028 Barcelona, Spain
3
Service Commun RMN, ICT, Université de Toulouse, UPS, 118 Route de Narbonne, 31062 Toulouse CEDEX 9, France
*
Authors to whom correspondence should be addressed.
Academic Editors: Alain Roucoux and Audrey Denicourt
Received: 9 November 2016 / Revised: 13 December 2016 / Accepted: 13 December 2016 / Published: 20 December 2016
(This article belongs to the Special Issue Soluble Nanoparticles in Catalytic Applications)
View Full-Text   |   Download PDF [3437 KB, uploaded 20 December 2016]   |  

Abstract

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. View Full-Text
Keywords: P-stereogenic phosphines; metal nanoparticles; palladium; ruthenium; surface reactivity P-stereogenic phosphines; metal nanoparticles; palladium; ruthenium; surface reactivity
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MDPI and ACS Style

Raluy, E.; Grabulosa, A.; Lavedan, P.; Pradel, C.; Muller, G.; Favier, I.; Gómez, M. P-Stereogenic Phosphines for the Stabilisation of Metal Nanoparticles. A Surface State Study. Catalysts 2016, 6, 213.

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