One step closer to the low-temperature CO oxidation over non-noble CuO/CeO2 nanocatalyst: The effect of CuO loading

Synthesis of Inexpensive Ternary Metal Oxides by a Co‐Precipitation Method for Catalytic Oxidation of Carbon Monoxide

“…[25,26] Meanwhile, the surface Cu + components, which coexist with Cu 2 + , provide strong CO adsorption sites. [16,[27][28][29][30] Yet, further research should be done to investigate the detailed reaction mechanism.…”

Cerium-Copper Oxides Synthesized in a Multi-Inlet Vortex Reactor as Effective Nanocatalysts for CO and Ethene Oxidation Reactions

“…The 5%CuCeO x and 10%CuCeO x samples exhibit similar reducibility properties to 20%CuCeO x (see Figure 6), but their lower abundancy of O α , Ce 3+ and structural defects is likely responsible for their slightly lower catalytic activity. The CO oxidation performances of the 20%CuCeO x sample were compared with those of the most performing catalysts studied in references [17,[86][87][88][89][90][91][92]. The latter research works deal with copper-cerium based catalysts synthesized by means of different co-precipitation techniques, such as Solution Combustion Synthesis (SCS) [17,86], Sol-gel [87,88], hydrothermal [89,90] and wet impregnation method [91,92].…”

“…The CO oxidation performances of the 20%CuCeO x sample were compared with those of the most performing catalysts studied in references [17,[86][87][88][89][90][91][92]. The latter research works deal with copper-cerium based catalysts synthesized by means of different co-precipitation techniques, such as Solution Combustion Synthesis (SCS) [17,86], Sol-gel [87,88], hydrothermal [89,90] and wet impregnation method [91,92]. The comparison, in terms of T 50% for CO oxidation, is shown in Figure 9.…”

CeO2/CuO/3DOM SiO2 catalysts with very high efficiency and stability for CO oxidation

“…[2][3][4]12 Extensive research has demonstrated that reducible metal oxides such as CeO 2 /CuO and their composite catalysts possess high CO oxidation properties, which can make them appropriate candidates for highactivity noble metal oxidation catalysts, and due to their low price, they are expected to replace the noble metal-based catalyst. 13,14 The uniqueness of applying CeO 2 in catalysts lies in the high concentration of oxygen vacancies, which endow high oxygen storage and release capabilities, and effectively provide oxygen to the catalytic reaction. 8,15,16 In addition, there are two main valence states of Ce including Ce 3+ and Ce 4+ in cerium oxide.…”

“…The interaction between Ce 3+ and Ce 4+ can provide very high catalytic activity for surface redox reactions. 14,17 However, due to the weak oxidation mobility and easy sintering of pure CeO 2 , it is often doped or mixed with other metals to improve the catalytic performance. The transition metal Cu is also an element with good valence changing properties (Cu + /Cu 2+ ), but its catalytic activity for CO oxidation is low when used as a single catalyst and needs to be further composited with other metals to improve its performance.…”