Issue 2, 2007
From the journal:

New Journal of Chemistry

Catalytic evidence of the core/shell structure of bimetallic Pd/Rh colloids

Christian Bergounhou,a   Claudine Blandy,a   Robert Choukroun,*a   Pierre Lecante,b   Christian Lorbera  and  Jean-Louis Pellegattaa  

* Corresponding authors

a Laboratoire de Chimie de Coordination du CNRS (UPR 8241), lié par convention à l’Université Paul Sabatier, 205 route de Narbonne, Toulouse Cedex 4, France
E-mail: choukrou@lcc-toulouse.fr
Fax: +33 561 55 30 03
Tel: +33 561 33 31 61

b CEMES-LOE-CNRS, 29 rue Jeanne Marvig, BP 4347, Toulouse Cedex, France

Abstract

The co-reduction of [Rh(C2H4)2Cl]2 and [Pd(η3-C3H5)Cl]2 with vanadocene [Cp2V] in THF, and in presence of poly(vinylpyrrolidone) (PVP), gives bimetallic PVP-protected Rh/Pd colloids. HREM and WAXS experiments show a narrow size distribution centered near 2 nm, indicating the existence of bimetallic particles rather than physical mixtures of monometallic ones. CO chemisorption, followed by IR in CH2Cl2, as well as catalytic hydrogenation of quinoline and phenylacetylene, followed by GC in CH2Cl2 or CH2Cl2/H2O, confirm the presence of core/shell-structured bimetallic colloids, with Pd atoms surrounded by Rh atoms.

Graphical abstract: Catalytic evidence of the core/shell structure of bimetallic Pd/Rh colloids

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Article information

DOI
https://doi.org/10.1039/B614910C
Article type
Paper
Submitted
13 Oct 2006
Accepted
23 Nov 2006
First published
19 Dec 2006

New J. Chem., 2007,31, 218-223

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Catalytic evidence of the core/shell structure of bimetallic Pd/Rh colloids

C. Bergounhou, C. Blandy, R. Choukroun, P. Lecante, C. Lorber and J. Pellegatta, New J. Chem., 2007, 31, 218 DOI: 10.1039/B614910C

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