Studies of selective CO oxidation on copper and ceria catalysts

The CO selective oxidation in hydrogen-rich gas was investigated with different Cu-Ce-O/γ-Al2O3 catalysts prepared with impregnation method.The results showed that the optimal total mass ratio of CuO and CeO2 in Cu-Ce-O/γ-Al2O3 catalyst was 40%.The addition of 1% ruthenium into the 40% Cu-Ce-O/γ-Al2O3 catalyst exhibited higher catalytic activity at lower temperatures.The doping of 1.5%Pt into the Cu-Ce-O/γ-Al2O3 catalyst improved the catalytic performance at higher temperatures.