Identificador persistente para citar o vincular este elemento: http://hdl.handle.net/10553/51122
Título: FTIR study of the interaction of CO and CO2 with silica-supported PtSn alloy
Autores/as: Llorca, J.
Homs, N.
Araña, J. 
Sales, J.
Ramírez De La Piscina, P.
Clasificación UNESCO: 221001 Catálisis
Palabras clave: Infrared absorption spectroscopy
Catalysis chemisorption
Platinum
Tin
Supported platinum–tin alloys
Fecha de publicación: 1998
Editor/a: 0169-4332
Publicación seriada: Applied Surface Science 
Resumen: The interaction between CO2 and the silica-supported PtSn alloy gave rise to an infrared band at 2339 cm−1 which was assigned to the coordination of this molecule to the bimetallic phase. The coadsorption of CO and CO2 indicates that both compete for similar coordination sites on the supported PtSn alloy. A CO singleton vibration frequency at ca. 2054 cm−1 was determined for both Pt/SiO2 and PtSn/SiO2 catalysts. A dilution effect caused by tin in the silica-supported PtSn alloy is proposed. The presence of isolated Pt sites in the particles of this alloy determine their unique capability to coordinate the CO2 molecule in the active sites.
URI: http://hdl.handle.net/10553/51122
ISSN: 0169-4332
DOI: 10.1016/S0169-4332(98)00225-6
Fuente: Applied Surface Science [ISSN 0169-4332], v. 134, p. 217-224
Colección:Artículos
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