CeO₂ supported CoO_x catalysts showed promising results in many NO reduction processes including NO reduction by CO. In this work, a series of CeO₂ supports with different calcination temperatures (as received-800 °C calcination) were prepared, followed by the synthesis of a series of CoO_x/CeO₂ catalysts with a surface density of 2.5 Co/nm² using the incipient wetness impregnation method. To understand the physicochemical properties of catalysts, various characterizations techniques, including BET, Raman spectroscopy, XRD, and H₂-TPR, were performed. The results showed that as calcination temperature increased, physical properties of supporting materials were changed. Surface CoO_x improved the reducibility of CeO₂, but it was not affected by the support calcination temperatures confirmed by H₂-TPR. The presence of CoO_x was crucial to enhance the catalytic activity during the NO reduction by CO reaction, rather than physical properties (surface area, pore size, particle size) of the catalyst.

CeO ₂负载的CoO _x催化剂在许多NO还原过程（包括用CO还原NO）中均显示出令人鼓舞的结果。在这项工作中，制备了一系列具有不同煅烧温度（在800°C煅烧时）的CeO ₂载体，然后进行合成初始湿润浸渍法制备一系列表面密度为2.5 Co / nm ²的CoO _x / CeO ₂催化剂。要了解催化剂的物理化学性质，可以使用各种表征技术，包括BET，拉曼光谱，XRD和H ₂-TPR，进行。结果表明，随着煅烧温度的升高，载体材料的物理性能发生变化。表面CoO _x改善了CeO ₂的还原性，但不受H ₂ -TPR证实的载体煅烧温度的影响。CoO _x的存在对于提高通过CO反应进行的NO还原过程中的催化活性而不是催化剂的物理性质（表面积，孔径，粒径）至关重要。