Preferential Oxidation of Carbon Monoxide in Hydrogen-Rich Streams over CuO/CeO2 Catalysts: How Nano (and Subnano) Structure Affects Catalytic Activity and Selectivity

Preferential oxidation of carbon monoxide in hydrogen-rich streams needs a suitable catalyst that selectively oxidizes CO avoiding H2 oxidation. Among the proposed catalysts, copper oxide supported on ceria (CuO/CeO2) received wide interest due to its intrinsic activity and selectivity and low cost with respect to noble metals.