The Formation of Mn-Ce Oxide Catalysts for CO Oxidation by Oxalate Route: The Role of Manganese Content.

ABSTRACT: The Mn-Ce oxide catalysts active in the oxidation of CO were studied by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), temperature-programmed reduction (TPR), transition electron microscopy (TEM), energy dispersive X-Ray (EDX), and a differential dissolution technique. The Mn-Ce catalysts were prepared by thermal decomposition of oxalates by varying the Mn:Ce ratio. The nanocrystalline oxides with a fluorite structure and particle sizes of 4-6 nm were formed. The introduction of manganese led to a reduction of the oxide particle size, a decrease in the surface area, and the formation of a Mn_yCe_1-yO_2-δ solid solution. An increase in the manganese content resulted in the formation of manganese oxides such as Mn₂O₃, Mn

SUBMITTER: Bulavchenko OA 

PROVIDER: S-EPMC8070498 | biostudies-literature | 2021 Apr

REPOSITORIES: biostudies-literature