EVIDENCE FOR 2 KINETICALLY DISTINCT ATOMIC OXYGEN SPECIES ON AG(110) - A MOLECULAR-BEAM STUDY OF THE CO OXIDATION REACTION

Authors
BURGHAUS U CONRAD H
Citation
U. Burghaus et H. Conrad, EVIDENCE FOR 2 KINETICALLY DISTINCT ATOMIC OXYGEN SPECIES ON AG(110) - A MOLECULAR-BEAM STUDY OF THE CO OXIDATION REACTION, Surface science, 338(1-3), 1995, pp. 869-874
Citations number
19
Categorie Soggetti
Chemistry Physical
Journal title
Surface science → ACNP
ISSN journal
00396028
Volume
338
Issue
1-3
Year of publication
1995
Pages
869 - 874
Database
ISI
SICI code
0039-6028(1995)338:1-3<869:EF2KDA>2.0.ZU;2-C
Abstract
Molecular beam titration measurements of CO reacting with preadsorbed atomic oxygen show evidence of two kinetically distinct oxygen species on Ag(110) produced by the dissociation of molecular oxygen at 180 K. The CO2 reaction pathways observed at various temperatures (100-200 K ) can be rationalized on the basis of an extended Langmuir-Hinshelwood mechanism, which involves a competitive reaction of the two oxygen sp ecies.