CESIUM-CATALYZED OXIDATION OF ZINC SURFACES

Authors
RODRIGUEZ JA HRBEK J
Citation
Ja. Rodriguez et J. Hrbek, CESIUM-CATALYZED OXIDATION OF ZINC SURFACES, Catalysis letters, 26(3-4), 1994, pp. 393-399
Citations number
34
Categorie Soggetti
Chemistry Physical
Journal title
Catalysis letters → ACNP
ISSN journal
1011372X
Volume
26
Issue
3-4
Year of publication
1994
Pages
393 - 399
Database
ISI
SICI code
1011-372X(1994)26:3-4<393:COOZS>2.0.ZU;2-C
Abstract
On zinc films, the adsorption probability of O2 is extremely low (10(- 3)-10(-2)), and O2 exposures in the range of 10(3)-10(4) langmuir are necessary to produce a significant transformation of metallic zinc int o zinc oxide. The presence of submonolayer coverages of cesium enhance s the oxidation rate of zinc by 2-3 orders of magnitude. The cesium ad atoms interact with O2 molecules, producing a reservoir of reactive ox ygen species that oxidize zinc.