States of Pt/CeO2 catalysts for CO oxidation below room temperature

• DOI: 10.1016/j.jcat.2023.03.004
• Publication Date: 2023-03-06T20:52:24Z
• Authors: Elena M. Slavinskaya; Andrey I. Stadnic...; Jon E. Quinlivan ...; Olga A. Stonkus; Mykhailo Vorokhta; Břetislav Šmíd; Pablo Castro-Latorre; Albert Bruix; Konstantin M. Neyman; Andrei I. Boronin
• Keywords: Reactivity; Reaction conditions

CO molecules can be efficiently oxidized over Pt/CeO2 catalysts, but the stability and reactivity of different states Pt in catalysts are still unclear. Here we combine experimental computational methods to characterize subjected reductive oxidative pre-treatments exposed oxidation reaction conditions. Particles metallic Pt, known catalytically active at elevated temperature, shown precursors for formation, under operando conditions, more stable PtOx particles that enable below room temperature. These similarly – than atomically dispersed Pt2+ species. The results approaches presented this study illustrate complex response catalytic materials conditions pave way future efforts improve similar using dedicated pre-treatment strategies.