Issue 31, 2006
From the journal:

Physical Chemistry Chemical Physics

Direct IR observation of vibrational properties of carbonyl species formed on Pd nano-particles supported on amorphous carbon: comparison with Pd/SiO2–Al2O3

S. Bertarione,a   C. Prestipino,†a   E. Groppo,a   D. Scarano,a   G. Spoto,a   A. Zecchina,a   R. Pellegrini,b   G. Leofantibc  and  C. Lamberti*a  

* Corresponding authors

a Dipartimento di Chimica IFM, NIS Centre of Excellence and INSTM (Centro di Riferimento), Università di Torino, Via P. Giuria 7, Italy
E-mail: carlo.lamberti@unito.it.
Fax: +39-011-6707855
Tel: +39-011-6707841

b Chimet SpA-Catalyst Division, Via di Pescaiola 74, Viciomaggio Arezzo, Italy

c Consultant, Via Firenze 43, Canegrate (Milano), Italy

Abstract

By diluting optically opaque carbon-supported Pd particles in silica Aerosil® we succeeded in observing the IR bands of adsorbed carbonyls and extracting information on the particle dispersion. Comparison with literature single crystal data and with silica–alumina supported Pd allowed us to make an assignment in terms of linear and 2-fold bridged carbonyls formed on Pd(111) and Pd(100) faces. Two Pd/C samples have been investigated. The relative intensities of the two carbonyl families observed on the two samples are consistent with the Pd dispersion independently measured with CO chemisorption, TEM and EXAFS analysis.

Graphical abstract: Direct IR observation of vibrational properties of carbonyl species formed on Pd nano-particles supported on amorphous carbon: comparison with Pd/SiO2–Al2O3

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Article information

DOI
https://doi.org/10.1039/B606431K
Article type
Paper
Submitted
08 May 2006
Accepted
20 Jun 2006
First published
30 Jun 2006

Phys. Chem. Chem. Phys., 2006,8, 3676-3681

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Direct IR observation of vibrational properties of carbonyl species formed on Pd nano-particles supported on amorphous carbon: comparison with Pd/SiO2–Al2O3

S. Bertarione, C. Prestipino, E. Groppo, D. Scarano, G. Spoto, A. Zecchina, R. Pellegrini, G. Leofanti and C. Lamberti, Phys. Chem. Chem. Phys., 2006, 8, 3676 DOI: 10.1039/B606431K

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