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28.12.2016 | Original Paper

Structural and catalytic properties of Au/MgO-type catalysts prepared in aqueous or methanol phase: application in the CO oxidation reaction

verfasst von: Willinton Y. Hernández, Funda Aliç, Sara Navarro-Jaen, Miguel A. Centeno, Pieter Vermeir, Pascal Van Der Voort, An Verberckmoes

Erschienen in: Journal of Materials Science | Ausgabe 8/2017

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Abstract

Au/MgO and Au/Mg(OH)₂-type catalysts for CO oxidation reaction were prepared by using two different synthesis methods in presence of either an aqueous or methanol phase. The influence of the porous and morphological properties of the starting magnesium oxide supports was analyzed and correlated with the catalytic performances of the final gold-supported catalysts. It was found that the deposition of gold in the presence of methanol as a solvent avoids the total rehydration of the MgO support and maintains the textural and morphological properties of the starting oxides. The support synthesized by a surfactant-assisted hydrothermal route, having a combined meso-macroporous structure (i.e., MgO-P) showed a positive influence on the CO oxidation reaction as it favored the dispersion of gold and the surface-to-gas phase interaction during the catalytic process.

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Titel: Structural and catalytic properties of Au/MgO-type catalysts prepared in aqueous or methanol phase: application in the CO oxidation reaction
verfasst von: Willinton Y. Hernández
Funda Aliç
Sara Navarro-Jaen
Miguel A. Centeno
Pieter Vermeir
Pascal Van Der Voort
An Verberckmoes
Publikationsdatum: 28.12.2016
Verlag: Springer US
Erschienen in: Journal of Materials Science / Ausgabe 8/2017
Print ISSN: 0022-2461
Elektronische ISSN: 1573-4803
DOI: https://doi.org/10.1007/s10853-016-0715-9

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