DIFFUSE-REFLECTANCE IR STUDY OF CO ADSORPTION ON A BIMETALLIC PT-PD CATALYST SUPPORTED ON NAY ZEOLITE - EVIDENCE OF ALLOY FORMATION

Authors
RADES T BOROVKOV VY KAZANSKY VB POLISSETTHFOIN M FRAISSARD J
Citation
T. Rades et al., DIFFUSE-REFLECTANCE IR STUDY OF CO ADSORPTION ON A BIMETALLIC PT-PD CATALYST SUPPORTED ON NAY ZEOLITE - EVIDENCE OF ALLOY FORMATION, Journal of physical chemistry, 100(40), 1996, pp. 16238-16241
Citations number
22
Categorie Soggetti
Chemistry Physical
Journal title
Journal of physical chemistry → ACNP
ISSN journal
00223654
Volume
100
Issue
40
Year of publication
1996
Pages
16238 - 16241
Database
ISI
SICI code
0022-3654(1996)100:40<16238:DISOCA>2.0.ZU;2-0
Abstract
NaY-supported bimetallic Pt-Pd clusters have been studied by diffuse r eflectance infrared spectroscopy of adsorbed CO. Spectra are quite dif ferent for Pt and Pd samples: on metallic Pt particles two singleton f requencies of linearly adsorbed CO molecules are observed whereas CO i s mainly adsorbed on Pd in the form of bridging species. The spectrum of CO adsorbed on a bimetallic Pt-Pd catalyst is more complicated and suggests tile formation of Pt-Pd alloy particles having a Pd-enriched surface.