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

Cies, Jose M.; del Rio, Eloy; Lopez Haro, Miguel; Delgado, Juan J.; Blanco, Ginesa; Collins, Sebastián Enrique; Calvino, Jose J.; Bernal, Serafin

Argentina | Artículos de revistas

Fecha

2010-12

Registro en:

Cies, Jose M.; del Rio, Eloy; Lopez Haro, Miguel; Delgado, Juan J.; Blanco, Ginesa; et al.; Fully Reversible Metal Deactivation Effects in Gold/Ceria-Zirconia Catalysts: Role of the Redox State of the Support; Wiley Vch Verlag; Angewandte Chemie; 49; 50; 12-2010; 9744-9748

1433-7851

http://hdl.handle.net/11336/13758

http://repositorioslatinoamericanos.uchile.cl/handle/2250/1893764

Autor

Cies, Jose M.

del Rio, Eloy

Lopez Haro, Miguel

Delgado, Juan J.

Blanco, Ginesa

Collins, Sebastián Enrique

Calvino, Jose J.

Bernal, Serafin

Institución

Consejo Nacional de Investigaciones Científicas y Tecnológicas (Argentina)

Resumen

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.

Materias

GOLD

CATALYSIS

INFRARED

ELECTRON-MICROSCOPY

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