NO reduction by CO over aluminate‐supported perovskites

Well crystallised La2CuO4 and LaMO3 perovskites were studied in the CO + NO reaction. Whereas for LaMO3 solids (M = Cr, Mn, Co and Ni) the activity decreased after reaction at 650 °C, the opposite was observed for LaFeO3 and La2CuO4 leading to the most active catalysts. Their activity was even more enhanced when supported onto magnesium aluminate of 60 m2 g−1.