THE EFFECT OF ADSORBED OXYGEN ON THE STABILITY OF NCO ON RH(111) STUDIED BY REFLECTION-ABSORPTION INFRARED-SPECTROSCOPY

Authors
KISS J SOLYMOSI F
Citation
J. Kiss et F. Solymosi, THE EFFECT OF ADSORBED OXYGEN ON THE STABILITY OF NCO ON RH(111) STUDIED BY REFLECTION-ABSORPTION INFRARED-SPECTROSCOPY, Journal of catalysis (Print), 179(1), 1998, pp. 277-282
Citations number
38
Categorie Soggetti
Chemistry Physical
Journal title
Journal of catalysis (Print) → ACNP
ISSN journal
00219517
Volume
179
Issue
1
Year of publication
1998
Pages
277 - 282
Database
ISI
SICI code
0021-9517(1998)179:1<277:TEOAOO>2.0.ZU;2-H
Abstract
The interaction of HNCO with Rh(111) has been studied with reflection absorption infrared spectroscopy. HNCO adsorbs dissociatively on Rh(11 1) at 150 K to yield adsorbed H and NCO species. On clean Rh(111) the NCO species was found to decompose readily to adsorbed CO and N on war ming to room temperature. Preadsorbed oxygen atoms result in an increa se in the relative amount of NCO, shifts the dominant vibrational band of NCO from 2160 to 2182 cm(-1), and significantly stabilizes the NCO species on Rh(111). The possible relevance of the stabilization of NC O in the NO + CO reaction is discussed. (C) 1998 Academic Press.