A Ce-Sn-Ox catalyst for the selective catalytic reduction of NOx with NH3

A series of Ce-Sn-O-x catalysts prepared by the facile coprecipitation method exhibited good catalytic activity in a broad temperature range from 100 degrees C to 400 degrees C for the selective catalytic reduction of NOx with NH3 at the space velocity of 20,000 h(-1). The Ce4Sn4Ox catalyst calcined at 400 degrees C showed high resistance to H2O, SO2, K2O and PbO under our test conditions. The better catalytic performance was associated with the synergistic effect between CeO2 and SnO2, which strengthened the NH3 and NOx adsorption capacity on the surface of the catalyst (C) 2013 Elsevier B.V. All rights reserved.