Transition metal catalysts, such as copper oxide, are more attractive alternatives to noble metal catalysts for emission control due to their higher abundance, lower cost, and excellent catalytic activity. In this study, we report the preparation and application of a novel CuO/CeO catalyst using a hydroxyl-rich Ce(OH) support for CO oxidation and NO reduction by CO. Compared to the catalyst prepared from a regular CeO support, the new CuO/CeO catalyst prepared from the OH-rich Ce(OH) (CuO/CeO-OH) showed significantly higher catalytic activity under different testing conditions.
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