Patent ID: 6054408
Filing Date: 2000-04-25
Classification: B01D,B01J

Abstract:
A catalyst for reducing the nitrogen oxide concentration in a flowing medium, comprising:a catalyst mass without rutilizing inhibitors, said catalyst mass including titanium, molybdenum and vanadium in the form of their oxides, containing an overall proportion of molybdenum trioxide MoO.sub.3 of from 0.01 to less than 5% by weight and a proportion of vanadium pentoxide V.sub.2 O.sub.5 of from 0.01 to 5% by weight, relative to the weight of the catalyst mass, and titanium dioxide TiO.sub.2 primarily in the form of chemically stabilized titanium dioxide TiO.sub.2 of the anatase type, and a proportion of titanium dioxide TiO.sub.2 of the rutile type of less than 5% by weight relative to an overall volume of said titanium dioxide TiO.sub.2 ;said titanium dioxide TiO.sub.2 containing impurities of sodium Na, potassium K, and iron Fe each of less than 500 ppm.