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Synfacts 2011(5): 0563-0563  
DOI: 10.1055/s-0030-1259817
Polymer-Supported Synthesis
© Georg Thieme Verlag Stuttgart ˙ New York

Rhodium Nanoparticle Catalysts Stabilized with Modified Polyvinylpyrrolidones

Contributor(s):Yasuhiro Uozumi, Yoichi M. A. Yamada, Maki Minakawa
N. Yan*, Y. Yuan, P. J. Dyson*
Ecole Polytechnique Fédérale de Lausanne, Switzerland
Rhodium Nanoparticle Catalysts Stabilized with a Polymer that Enhances Stability without Compromising Activity
Chem. Commun.  2011,  47:  2529-2531  
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Publication History

Publication Date:
15 April 2011 (online)

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Key words

rhodium - nanoparticles - polyvinylpyrrolidones - hydrogenation

Significance

Rhodium nanoparticle catalysts coated with a modified polyvinylpyrrolidone (PVP) were developed. The Rh nanoparticles (NPs) coated with 1 (1-Rh) exhibited thermal and catalytic stability compared to Rh NPs coated with PVP (PVP-Rh). Hydrogenation of aromatic substrates was performed with 1-Rh, or 2-Rh to give the corresponding cyclohexanes.

Comment

Rh NPs were characterized by X-ray photoelectron spectrometry (XPS), transmission electron microscopy (TEM), and high-resolution transmission electron microscopy (HRTEM). Catalyst 1-Rh was reused without loss of catalytic activity in the hydrogenation of phenol (14 times) and toluene (8 times) while PVP-Rh showed significant loss of catalytic activity.

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