CuO and CeO2 catalysts supported on Al2O3, ZrO2, and SiO2 in the oxidation of CO at low temperature

Aguila, G; Gracia, F.; Araya, P

Abstract

The effect of the support, Al2O3, ZrO2, and SiO2, on the activity for CO oxidation of a series of CuO and CeO2 monometallic and bimetallic catalysts was studied. The catalysts were prepared by coimpregnation of the support with the adequate amount of Cu and Ce nitrates to obtain a loading of 2% Cu and/or 8% Ce. It was found that the support has a strong influence on the activity of the different bimetallic catalysts. Interestingly, the SiO2 supported catalyst shows the higher activity. The bimetallic supported catalysts follow the activity sequence CuO-CeO2/SiO2 > CuO-CeO2/ZrO2 > CuO-CeO2/Al2O3. In the absence of CeO2, the most active monometallic catalyst was the CuO/ZrO2 system. The different degree of interaction between CuO and CeO2 particles, induced by the support, can explain the activity results for the bimetallic catalysts. © 2008 Elsevier B.V. All rights reserved.

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Título según WOS: CuO and CeO2 catalysts supported on Al2O3, ZrO2, and SiO2 in the oxidation of CO at low temperature
Título según SCOPUS: CuO and CeO2 catalysts supported on Al2O3, ZrO2, and SiO2 in the oxidation of CO at low temperature
Título de la Revista: APPLIED CATALYSIS A-GENERAL
Volumen: 343
Número: 01-feb
Editorial: ELSEVIER SCIENCE BV
Fecha de publicación: 2008
Página de inicio: 16
Página final: 24
Idioma: English
URL: http://linkinghub.elsevier.com/retrieve/pii/S0926860X08001762
DOI:

10.1016/j.apcata.2008.03.015

Notas: ISI, SCOPUS