1. Role of the Support in Determining the Vibrational Properties of Carbonyls Formed on Pd Supported on SiO2−Al2O3, Al2O3, and MgO
- Author
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Giovanni Agostini, A. Zecchina, Domenica Scarano, G. Leofanti, Elena Groppo, Carlo Lamberti, Riccardo Pellegrini, Serena Bertarione, and F. Rotunno
- Subjects
OXIDE SURFACES ,Inorganic chemistry ,PALLADIUM CATALYSTS ,Oxide ,MgO ,Infrared spectroscopy ,Metal carbonyl ,METAL-CARBONYLS ,REFLECTION-ABSORPTION-SPECTROSCOPY ,SURFACE-CHEMISTRY ,chemistry.chemical_compound ,CO ADSORPTION ,Adsorption ,High surface area ,Physical and Theoretical Chemistry ,Fourier transform infrared spectroscopy ,Metal nanoparticles ,Sio2 al2o3 ,Surfaces, Coatings and Films ,Electronic, Optical and Magnetic Materials ,General Energy ,FTIR ,chemistry ,Physical chemistry ,SINGLE-CRYSTALS ,ALUMINA ,MODEL CATALYSTS - Abstract
The vibrational properties of adsorbed carbonyls on heterogeneous Pd/oxide systems (SiO2−Al2O3, Al2O3, and MgO) are compared and discussed. On the basis of the surface science literature, the complex IR spectra of carbonyls formed on Pd particles are interpreted in terms of what occurs on well-defined Pd(111) and Pd(100) faces and on edge/corner defects, typical of metal nanoparticles, thus bridging the gap between single crystals and high surface area systems. Furthermore, the influence of the electronic properties of the support (i.e., surface acidity/basicity) in determining the spectral features of carbonyls formed on Pd particles is clearly demonstrated.
- Published
- 2007
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