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

Authors:Moretti, E.
Storaro, L.
Talon, A.
Lenarda, M.
Riello, P.
Frattini, R.
de Yuso, M.D.V.M.
Jiménez-López, A.
Rodríguez-Castellón, E.
Ternero, F.
Caballero, A.
Holgado, Juan P.
Issue Date:2011
Citation:Applied Catalysis B: Environmental 102: 627- 637 (2011)
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. © 2011 Elsevier B.V.
Identifiers:doi: 10.1016/j.apcatb.2011.01.004
issn: 0926-3373
Appears in Collections:(ICMS) Artículos

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