Catalyst and process for converting nitrogen oxide compounds

摘要

Catalyst comprising a titania carrier and one or more metal compounds which metals are selected from the group consisting of vanadium, molybdenum and tungsten, which catalyst has a surface area measured by nitrogen adsorption of between 70 and 99 m<2>/g and which catalyst is obtainable by impregnating the carrier with the metal compound(s) after extrusion of the titania carrier; a process for preparing such catalyst, catalyst obtainable by such preparation process and a process for selectively converting nitrogen oxide compounds with the help of such catalyst.