title: Low-temperature CO oxidation on multicomponent gold based catalysts.
abstract: In this work the development of gold catalysts, essentially based on γ-alumina with small superficial fraction of Ce-Fe mixed oxides as support for the low temperature CO oxidation is proposed. Characterization results obtained by means of TEM, OSC, XPS, UV-Vis spectroscopy and H2-TPR are employed to correlate the activity data with the catalysts composition. The bare γ-alumina supported gold catalyst demonstrates the poorest activity within the series. The addition of CeO2 or FeOX improves the catalytic performance, especially observed for the CeO2-FeOx mixed oxide doped samples. This enhanced CO oxidation activity was related to the Ce-Fe interaction producing materials with promoted redox properties and therefore oxidation activity.
authors.affiliation: Departamento de Química Inorgánica e Instituto de Ciencia de Materiales de Sevilla, Centro mixto CSIC-Universidad de Sevilla Sevilla, Spain.
authors.forename: Tomás
authors.initials: T
authors.lastname: Ramírez Reina
authors.affiliation: Departamento de Química Inorgánica e Instituto de Ciencia de Materiales de Sevilla, Centro mixto CSIC-Universidad de Sevilla Sevilla, Spain.
authors.forename: Svetlana
authors.initials: S
authors.lastname: Ivanova
authors.affiliation: Departamento de Química Inorgánica e Instituto de Ciencia de Materiales de Sevilla, Centro mixto CSIC-Universidad de Sevilla Sevilla, Spain.
authors.forename: Miguel A
authors.initials: MA
authors.lastname: Centeno
authors.affiliation: Departamento de Química Inorgánica e Instituto de Ciencia de Materiales de Sevilla, Centro mixto CSIC-Universidad de Sevilla Sevilla, Spain.
authors.forename: José A
authors.initials: JA
authors.lastname: Odriozola
keywords: CO oxidation; cerium oxide; gold catalysts; iron oxide; mixed oxides