The effect of adsorbed oxygen on the stability of NCO on Rh(111) studied by reflection absorption infrared spectroscopy

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

The interaction of HNCO with Rh(111) has been studied with reflection absorption infrared spectroscopy. HNCO adsorbs dissociatively on Rh(111) 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 warming to room temperature. Preadsorbed oxygen atoms result in an increase 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 NCO in the NO+CO reaction is discussed.

Original languageEnglish
Pages (from-to)277-282
Number of pages6
JournalJournal of Catalysis
Volume179
Issue number1
Publication statusPublished - 1998

Fingerprint

Carbon Monoxide
Absorption spectroscopy
Infrared spectroscopy
oxygen atoms
absorption spectroscopy
Stabilization
stabilization
infrared spectroscopy
Oxygen
Atoms
heating
shift
room temperature
oxygen
interactions
Temperature

Keywords

  • Adsorption of HNCO
  • Decomposition of NCO
  • Effects of coadsorbed oxygen
  • NCO surface complex
  • NO+CO reaction
  • Reflection absorption infrared spectroscopy
  • Stabilizing effect of oxygen adatoms

ASJC Scopus subject areas

  • Catalysis
  • Process Chemistry and Technology

Cite this

@article{0e030ddad8f8428ba38153f091db097d,
title = "The effect of adsorbed oxygen on the stability of NCO on Rh(111) studied by reflection absorption infrared spectroscopy",
abstract = "The interaction of HNCO with Rh(111) has been studied with reflection absorption infrared spectroscopy. HNCO adsorbs dissociatively on Rh(111) 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 warming to room temperature. Preadsorbed oxygen atoms result in an increase 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 NCO in the NO+CO reaction is discussed.",
keywords = "Adsorption of HNCO, Decomposition of NCO, Effects of coadsorbed oxygen, NCO surface complex, NO+CO reaction, Reflection absorption infrared spectroscopy, Stabilizing effect of oxygen adatoms",
author = "J. Kiss and F. Solymosi",
year = "1998",
language = "English",
volume = "179",
pages = "277--282",
journal = "Journal of Catalysis",
issn = "0021-9517",
publisher = "Academic Press Inc.",
number = "1",

}

TY - JOUR

T1 - The effect of adsorbed oxygen on the stability of NCO on Rh(111) studied by reflection absorption infrared spectroscopy

AU - Kiss, J.

AU - Solymosi, F.

PY - 1998

Y1 - 1998

N2 - The interaction of HNCO with Rh(111) has been studied with reflection absorption infrared spectroscopy. HNCO adsorbs dissociatively on Rh(111) 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 warming to room temperature. Preadsorbed oxygen atoms result in an increase 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 NCO in the NO+CO reaction is discussed.

AB - The interaction of HNCO with Rh(111) has been studied with reflection absorption infrared spectroscopy. HNCO adsorbs dissociatively on Rh(111) 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 warming to room temperature. Preadsorbed oxygen atoms result in an increase 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 NCO in the NO+CO reaction is discussed.

KW - Adsorption of HNCO

KW - Decomposition of NCO

KW - Effects of coadsorbed oxygen

KW - NCO surface complex

KW - NO+CO reaction

KW - Reflection absorption infrared spectroscopy

KW - Stabilizing effect of oxygen adatoms

UR - http://www.scopus.com/inward/record.url?scp=0000740421&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0000740421&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0000740421

VL - 179

SP - 277

EP - 282

JO - Journal of Catalysis

JF - Journal of Catalysis

SN - 0021-9517

IS - 1

ER -