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Effect of thermal treatments on the catalytic behaviour in the CO preferential oxidation of a CuO-CeO2-ZrO2 catalyst with a flower-like morphology

 

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Opened Access Effect of thermal treatments on the catalytic behaviour in the CO preferential oxidation of a CuO-CeO2-ZrO2 catalyst with a flower-like morphology
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Author: Moretti, Elisa
Storaro, Loretta
Talon, Aldo
Lenarda, Maurizio
Riello, Piero
Frattini, Romana
Martínez de Yuso, María del Valle
Jiménez López, Antonio
Rodríguez Castellón, Enrique
Ternero, Fátima
Caballero Martínez, Alfonso
Holgado Vázquez, Juan Pedro
Department: Universidad de Sevilla. Departamento de Química Inorgánica
Date: 2011
Published in: Applied Catalysis B: Environmental, 102, 627-637.
Document type: Article
Abstract: A Ce-Zr-Cu oxide system with a flower-like morphology was prepared by a slow co-precipitation method in the absence of any structure directing agent. Four portions of the oxide were thermally treated at four different temperatures (350°C, 450°C, 550°C, 650°C). The resulting materials samples were characterized by quantitative XRD, adsorption-desorption of N2 at-196°C, SEM and TEM microscopy, -H2-TPR, XPS and Operando-XANES. All samples were tested in the preferential CO oxidation (CO-PROX) in the 40-190°C temperature range. Thermal treatments were found to induce slight structural changes without altering the starting morphology of the samples. The samples treated at higher temperature 550-650°C showed a quite interesting CO-PROX activity and selectivity in a temperature range suitable for a practical use within the FEMFC technology.
Cite: Moretti, E., Storaro, L., Talon, A., Lenarda, M., Riello, P., Frattini, R.,...,Holgado Vázquez, J.P. (2011). Effect of thermal treatments on the catalytic behaviour in the CO preferential oxidation of a CuO-CeO2-ZrO2 catalyst with a flower-like morphology. Applied Catalysis B: Environmental, 102, 627-637.
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URI: https://hdl.handle.net/11441/82827

DOI: 10.1016/j.apcatb.2011.01.004

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