CATALYST CERAMIC CANDLE FILTER FOR COMBINED PARTICULATE REMOVAL AND THE SELECTIVE CATALYTIC REDUCTION (SCR) OF NITROGEN-OXIDES

摘要

The present invention pertains to a catalyst for use in the selective catalytic reduction (SCR) of nitrogen oxides comprising: • a ceramic candle filter substrate and • a coating which comprises an oxidic metal carrier comprising an oxide of titanium and a catalytic metal oxide which comprises an oxide of vanadium wherein the mass ratio vanadium/titanium is 0.03 to 0.27, • wherein the mass ratio is calculated based on the mass of vanadium metal and titanium metal, and • wherein the catalyst comprises from about 1 to about 10 % by weight of the catalytically active material, and • wherein the catalytic metal oxide is adsorbed onto the surface of the oxidic metal carrier.