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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

AuthorsMoretti, Elisa; Storaro, L.; Talon, A.; Lenarda, M.; Riello, P.; Frattini, R.; Yuso, M. D. V. M. de; Jiménez-López, A. ; Rodríguez-Castellón, Enrique; Ternero, Fátima ; Caballero, Alfonso ; Holgado, Juan P.
Issue Date2011
CitationApplied Catalysis B: Environmental 102: 627- 637 (2011)
AbstractA 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. © 2011 Elsevier B.V.
Identifiersdoi: 10.1016/j.apcatb.2011.01.004
issn: 0926-3373
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