SURFACE CHARACTERIZATION AND REACTIVITY OF PD8NI92(111) AND PD8NI92(110) ALLOYS

Authors
MICHEL AC LIANOS L ROUSSET JL DELICHERE P PRAKASH NS MASSARDIER J JUGNET Y BERTOLINI JC
Citation
Ac. Michel et al., SURFACE CHARACTERIZATION AND REACTIVITY OF PD8NI92(111) AND PD8NI92(110) ALLOYS, Surface science, 416(1-2), 1998, pp. 288-294
Citations number
19
Categorie Soggetti
Chemistry Physical
Journal title
Surface science → ACNP
ISSN journal
00396028
Volume
416
Issue
1-2
Year of publication
1998
Pages
288 - 294
Database
ISI
SICI code
0039-6028(1998)416:1-2<288:SCAROP>2.0.ZU;2-2
Abstract
Pd8Ni92 (111) and (110) surfaces have been investigated using X-ray ph otoelectron spectroscopy and low energy ion scattering. As expected, a high rate of Pd segregation is observed on both faces leading to Fd s urface concentrations of 76 and 81 at.% on the (111) and (110) surface s, respectively. The catalytic performances of these surfaces have bee n studied for the 1,3-butadiene hydrogenation reaction. The catalytic activity of these alloys is greatly enhanced relative to that of the p ure Fd(lll) and (110) surfaces. (C) 1998 Published by Elsevier Science B.V. All rights reserved.