祝贺周晓梅博士的工作发表在ACS Appl. Mater. Inter.
Enhancing CO Preferential Oxidation in H2-Rich Stream on Solid Solution CuO_CeO2 Catalyst with Abundant Oxygen Vacancies
Xiaomei Zhou, Yu Shu, Fu Li, Liang Xu, Yingjun Chen, Qingxin Guan*, Wei Li*, ACS Appl. Mater. Inter., 2025, 17, 39663–39675.
https://doi.org/10.1021/acsami.5c07237
In this study, we propose a strategy for preparing solid solution CuO_CeO2 catalysts derived from Ce-based MOFs for CO preferential oxidation. The support provided by frameworks and the anchoring of amino groups prevent the agglomeration of Cu species during subsequent annealing. Therefore, highly dispersed Cu species are formed, and even some are atomically embedded in the CeO2 lattice. Notably, 99.5% CO conversion and 58.2% CO2 selectivity are achieved at a WHSV of 36,000 mL/(h·gcat) with only 4.41 wt % Cu loading. No decrease in efficiency is observed within 150 h. DFT calculations reveal that the O2 is favorably adsorbed and activated at oxygen vacancies of Cu–Ce–V[O], whereas the CO adsorption is localized at Cu ion sites. Highly dispersed Cu species and neighboring oxygen vacancies provide abundant active sites for CO oxidation via the noncompetitive L–H mechanism. This research offers insights for designing efficient non-noble metal catalysts and understanding the reaction mechanism.
