Comparative study of CuO supported on CeO2, Ce0.8Zr0.2O2 and Ce0.8Al0.2O2 based catalysts in the CO-PROX reaction |
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| Authors: | A Arango-Díaz JA Cecilia E Moretti A Talon P Núñez J Marrero-Jerez J Jiménez-Jiménez A Jiménez-López E Rodríguez-Castellón |
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| Affiliation: | 1. Departamento de Química Inorgánica, Facultad de Ciencias, Universidad de Málaga, 29071 Málaga, Spain;2. Dipartimento di Scienze Molecolari e Nanosistemi, Università Ca'' Foscari Venezia, Via Torino 155/b, 30172 Mestre-Venezia, Italy;3. Departamento de Química Inorgánica, Universidad de La Laguna, La Laguna, Spain |
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| Abstract: | CuO supported on CeO2, Ce0.8Zr0.2O2 and Ce0.8Al0.2O2 based catalysts (6%wt Cu) were synthesized and tested in the preferential oxidation of CO in a H2-rich stream (CO-PROX). Nanocrystalline supports, CeO2 and solid solutions of modified CeO2 with zirconium and aluminum were prepared by a freeze-drying method. CuO was supported by incipient wetness impregnation and calcination at 400 °C. All catalysts exhibit high activity in the CO-PROX reaction and selectivity to CO2 at low reaction temperature, being the catalyst supported on CeO2 the more active and stable. The influence of the presence of CO2 and H2O was also studied. |
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| Keywords: | Nanocrystalline CeO2 Freeze-drying method Copper oxide Preferential CO oxidation Hydrogen |
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