FTIR EVIDENCE OF THE FORMATION OF PLATINUM CARBONYLS FROM PT METAL-CLUSTERS ENCAGED IN KL ZEOLITE

Authors
STAKHEEV AY SHPIRO ES JAEGER NI SCHULZEKLOFF G
Citation
Ay. Stakheev et al., FTIR EVIDENCE OF THE FORMATION OF PLATINUM CARBONYLS FROM PT METAL-CLUSTERS ENCAGED IN KL ZEOLITE, Catalysis letters, 34(3-4), 1995, pp. 293-303
Citations number
40
Categorie Soggetti
Chemistry Physical
Journal title
Catalysis letters → ACNP
ISSN journal
1011372X
Volume
34
Issue
3-4
Year of publication
1995
Pages
293 - 303
Database
ISI
SICI code
1011-372X(1995)34:3-4<293:FEOTFO>2.0.ZU;2-J
Abstract
Reactivity of Pt metal clusters supported on KL zeolite toward CO was studied by FTIR spectroscopy. Investigation of the CO adsorption was p erformed within a wide CO pressure range (1-500 mbar). IR data on the CO adsorption at high pressure (500 mbar) suggest the transformation o f the finest Pt particles into neutral Pt carbonyls ((Zeol-O:)(m)Pt-x( CO)(y)) stabilized by the basic oxygen atoms of the KL framework. The transformation is found to be readily reversible upon CO adsorption-de sorption at room temperature (RT).