Issue 8, 2006
From the journal:

New Journal of Chemistry

A simple and reproducible method for the synthesis of silica-supported rhodium nanoparticles and their investigation in the hydrogenation of aromatic compounds

Vincent Mévellec,a   Audrey Nowicki,a   Alain Roucoux,*a   Christophe Dujardin,b   Pascal Granger,b   Edmond Payenb  and  Karine Philippotc  

* Corresponding authors

a CNRS UMR 6226 ‘Sciences Chimiques de Rennes’—Equipe Synthèse Organique et Systèmes Organisés-Ecole Nationale Supérieure de Chimie de Rennes, Avenue du Gal Leclerc, 35700 Rennes, France
E-mail: Alain.Roucoux@ensc-rennes.fr
Fax: +33 (0)223238199

b Unité de Catalyse et de Chimie du Solide, UMR 8181, Université des Sciences et Technologies de Lille, F-59655 Villeneuve d’Ascq, France

c Laboratoire de Chimie de Coordination du CNRS, UPR 8241, 205 route de Narbonne, 31077 Toulouse Cedex 04, France

Abstract

Colloidal suspensions of rhodium nanoparticles have been easily prepared in aqueous solution by chemical reduction of the precursor RhCl3·3H2O in the presence of the surfactant N,N-dimethyl-N-cetyl-N-(2-hydroxyethyl)ammonium chloride (HEA16Cl) and further used to immobilize rhodium nanoparticles on silica by simple impregnation. The obtained silica-supported rhodium nanoparticles have been investigated by adapted characterization methods such as transmission electron microscopy and X-ray photoelectron spectroscopy. A particle size increase from 2.4 to 5 nm after the silica immobilization step and total elimination of the surfactant has been observed. This “heterogeneous” catalyst displayed good activities for the hydrogenation of mono-, di- alkylsubstituted and/or functionalized aromatic derivatives in water under atmospheric hydrogen pressure and at room temperature. In all cases, the catalyst could be recovered several times after a simple decantation or filtration and reused without any significant loss in catalytic activity. This supported catalyst has also been tested under higher hydrogen pressure giving rise to TOFs reaching 6430 h−1 at 30 bar and in terms of catalytic lifetime 30 000 TTO in 8.5 h for pure anisole hydrogenation at 40 bar.

Graphical abstract: A simple and reproducible method for the synthesis of silica-supported rhodium nanoparticles and their investigation in the hydrogenation of aromatic compounds

About
Cited by
Related
Download options Please wait...

Article information

DOI
https://doi.org/10.1039/B605893K
Article type
Paper
Submitted
25 Apr 2006
Accepted
02 Jun 2006
First published
22 Jun 2006

New J. Chem., 2006,30, 1214-1219

Permissions

Request permissions

A simple and reproducible method for the synthesis of silica-supported rhodium nanoparticles and their investigation in the hydrogenation of aromatic compounds

V. Mévellec, A. Nowicki, A. Roucoux, C. Dujardin, P. Granger, E. Payen and K. Philippot, New J. Chem., 2006, 30, 1214 DOI: 10.1039/B605893K

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements