The loading of pre-treated amorphous silica with platinum or palladium was carried out by using the molecular precursors Pt2(m-Cl)2Cl2(CO)2, or Pd2(m-Cl)2Cl2(CO)2, respectively, which contain the required amount of coordinated CO to carry out the formation of the metal particles upon contact with moisture. The reactivity of the well-soluble mononuclear platinum complex cis-PtCl2(CO)2 with stoichiometric amounts of water was investigated either under N2 or CO. The metal nanoparticles produced on the silica matrix have been characterized by X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD) and transmission electron microscopy (TEM). The catalytic performance of the silica-supported metals thus produced was evaluated in the hydrogenation of cyclohexene.
|Autori:||LIDIA ARMELAO; BELLI DELL'AMICO D.; ROBERTO BRAGLIA; FAUSTO CALDERAZZO; FABIO GARBASSI; GIANLUIGI MARRA; ALESSANDRA MERIGO|
|Titolo:||Loading silica with Metals (Palladium or Platinum) Under Mild Conditions by Using Well-Defined Molecular Precursors|
|Anno del prodotto:||2009|
|Digital Object Identifier (DOI):||10.1039/b903655e|
|Appare nelle tipologie:||1.1 Articolo in rivista|