Pt-Modified Nano-Sized Mn2O3 Oxide Prepared from the Mn3O4 Phase with Tetragonal Symmetry for CO Oxidation

One of the current problems in environmental catalysis is design an effective and less costly catalytic system for oxidation CO. The nano-sized α-Mn2O3 oxide has been prepared modified with 0.5 wt.% Pt. catalysts have characterized by X-ray diffraction (XRD), photoelectron spectroscopy (XPS), transmission electron microscopy (TEM), temperature-programmed reduction (TPR) diffuse-reflectance infrared (DRIFTS). Finely divided PtO Pt(OH)2 are being formed on Mn2O3 surface as a result strong interaction between platinum nano-oxide. Based DRIFTS investigations model calculations, Langmuir–Hinshelwood type mechanism supposed CO Pt/Mn2O3. oxygen adsorbed different types sites. Mars–van Krevelen most probable one over pure Mn2O3, thus suggesting that CO2 oxidized adsorption mixture + N2 or presence (CO O2) leads to partial Pt+ species formation linear Pt1+−CO Pt0−CO carbonyls. Both them take part reaction.