ИСТИНА

Unique redox properties provide high efficiency of ceria-based systems in the oxidation of CO and soot particles. However, in terms of catalytic activity, they are inferior to widespread catalysts, including supported metals. Nowadays the development of new approaches to improve catalytic properties of relatively cheap CeO2-based systems is a pressing task. Several methods have been proposed to improve the efficiency of catalytic systems based on cerium oxide, among them doping with the oxides of the other rare-earth or transition elements, the addition of modifiers and promoters, and optimization of preparation conditions. In our work, we tried to reveal the combination of these ways which is the most effective to improve catalytic properties of CeO2 in the total oxidation of CO, alone or in the presence of hydrogen (PROX).