Ce0.8Zr0.2O2 solid solutions were prepared by three different methods, namely, surfactant-assisted, co-precipitation, and sol–gel methods, and were used as supports of CuO nanocatalysts by the deposition-precipitation (DP) method. The prepared supports and catalysts were characterized by using XRD, N2 adsorption, TEM, and H2-TPR techniques. The influence of preparation methods on the low-temperature carbon monoxide oxidation activity of these CuO/Ce0.8Zr0.2O2 catalysts was investigated comparatively by using a microreactor-GC system. The catalyst prepared by surfactant-assisted method is more active for low-temperature CO oxidation than the ones prepared by the co-precipitation and sol–gel methods. The support and catalysts prepared by surfactant-assisted method possess mesoporous framework, nanoscale particle size, and high surface area, improving the synergistic effect between CuO species and support, which is beneficial for enhancing the catalytic performance of low-temperature CO oxidation.
CeO2 Copper Species ZrO2 Catalyst Support Copper Oxide Nanoscale Particle Size
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This work was supported by the National Natural Science Foundation of China (No. 20473041 and 20673060), the National Basic Research Program of China (No. 2009CB623502), the Specialized Research Fund for the Doctoral Program of Higher Education (20070055014), the Natural Science Foundation of Tianjin (08JCZDJC21500), the Program for New Century Excellent Talents in University (NCET-06-0215), and Nankai University.
1.Institute of New Catalytic Materials Science, Key Laboratory of Energy-Material Chemistry (Tianjin) & Engineering Research Center of Energy Storage and Conversion (Ministry of Education), College of ChemistryNankai UnviersityTianjinPeople’s Republic of China