Fig. 2: Catalytic performance of PtCu/MgO catalysts in CO oxidation.

a, b Catalytic performance for all catalysts (1vol.%CO/20%O₂/79%He, 120,000 ml h⁻¹ g_cat⁻¹), (c) Arrhenius plots, (d) Stability test of PtCu/MgO and Pt/MgO at 150 °C for CO oxidation reaction (GHSV: 190,000 ml h⁻¹ g_cat⁻¹).