The cobalt oxidation state in preferential CO oxidation on CoO<sub><i>x</i></sub>/Pt(111) investigated by <i>operando</i> X-ray photoemission spectroscopy
Eoghan Rattigan, Zhaozong Sun, Tamires Gallo, Miguel Ángel Niño, Sofía O. Parreiras, Cristina Martín‐Fuentes, Juan Carlos Martín Romano, David Écija, Carlos Escudero, Ignacio J. Villar‐García, Jonathan Rodrı́guez-Fernández, Jeppe V. Lauritsen
Abstract
. This variation, however, has no influence on the temperature where CO oxidation is observed. Our study points to the general importance of a dynamic reducibility window of cobalt oxide, which is influenced by hydroxylation, and the bonding strength of CO to the reduced oxide phase as important parameters for the activity of the system.
Topics & Concepts
PROXCatalysisCobaltOxidation stateCobalt oxideOxideX-ray photoelectron spectroscopyChemistryCarbon monoxideHydrogenAdsorptionMetalInorganic chemistryPhysical chemistryChemical engineeringOrganic chemistryBiochemistryEngineeringCatalytic Processes in Materials ScienceCatalysis and Oxidation ReactionsElectrocatalysts for Energy Conversion