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

被引：28

作者：

Bertarione, S.

Prestipino, C.

Groppo, E.

Scarano, D.

Spoto, G.

Zecchina, A.

Pellegrini, R.

Leofanti, G.

Lamberti, C.

机构：

[1] Univ Turin, Dipartimento Chim IFM, NIS Ctr Excellence & INSTM, Ctr Riferimento, I-10125 Turin, Italy

[2] Chimet SpA Catalyst Div, I-52040 Viciomaggio Arezzo, Italy

来源：

PHYSICAL CHEMISTRY CHEMICAL PHYSICS | 2006年 / 8卷 / 31期

关键词：

D O I：

10.1039/b606431k

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

By diluting optically opaque carbon-supported Pd particles in silica Aerosil (R) 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.

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页码：3676 / 3681

页数：6

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