STUDY OF Pt/Ce-Mn-O x CATALYSTS FOR THE LOW-TEMPERATURE CO OXIDATION REACTION

The possibility to obtain low-temperature active platinum-based catalysts is investigated. Catalysts of the composition Pt/Ce 1– x Mn x O 2–δ are synthesized in two steps: firstly, Ce 1– x Mn x O 2–δ carriers with different manganese concentrations (10-30 at.%) are obtained by co-precipitation, then final catalysts are prepared by impregnating with platinum nitrate. The introduction of manganese into the carrier composition is found to decrease the platinum load to the required one for anomalous low-temperature СО oxidation at Т < 0 °C.