Fully Reversible Metal Deactivation Effects in Gold/Ceria-Zirconia Catalysts: Role of the Redox State of the Support

Fully Reversible Metal Deactivation Effects in Gold/Ceria-Zirconia Catalysts: Role of the Redox State of the Support

Strong and reversible modification of the chemical properties of supported Au nanoparticles caused by alternating oxidizing (a and c) and reducing (b) pretreatment of Au/CeO2–ZrO2 catalysts were revealed by a methodology that combines FTIR spectroscopy (see picture), studies on the volumetric adsorp...

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Veröffentlicht in:Angewandte Chemie (International ed.) 2010-12, Vol.49 (50), p.9744-9748
Hauptverfasser: Cíes, José M, del Río, Eloy, López-Haro, Miguel, Delgado, Juan J, Blanco, Ginesa, Collins, Sebastián, Calvino, José J, Bernal, Serafín
Format: Artikel
Sprache:eng
Schlagworte:
carbon monoxide
ceria-zirconia
chemisorption
gold
supported catalysts
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Zusammenfassung:Strong and reversible modification of the chemical properties of supported Au nanoparticles caused by alternating oxidizing (a and c) and reducing (b) pretreatment of Au/CeO2–ZrO2 catalysts were revealed by a methodology that combines FTIR spectroscopy (see picture), studies on the volumetric adsorption of CO and ultimate oxygen storage capacity, determination of metal dispersion by electron microscopy, and X‐ray photoelectron spectroscopy.
ISSN:1433-7851
1521-3773
DOI:10.1002/anie.201005002