Selective catalytic reduction of NO by NH3 over a Ce/TiO2 catalyst

Samples of cerium supported on titania with different Ce loadings have been prepared by an impregnation method and tested for the selective catalytic reduction of NO by NH3 in the presence of excess oxygen. The catalysts with 5% Ce and above had high activity in the temperature range 275–400 °C at a space velocity of 50,000 h−1. All the catalysts showed an excellent selectivity to N2 and high tolerance to SO2 and H2O under our test conditions.