Patent ID: 8263032

Claim:
An oxidation catalyst comprising an extruded solid body comprising: 10-95% by weight of at least one binder/matrix component; 5-90% by weight of a molecular sieve selected from the group consisting of a zeolitic molecular sieve, a non-zeolitic molecular sieve, and a mixture of any two or more thereof, wherein the zeolitic molecular sieve is a synthetic aluminosilicate zeolite and has a silica-to-alumina ratio of 10 to 150, and wherein the zeolitic molecular sieve is a medium pore molecular sieve, a large pore molecular sieve, or a meso pore molecular sieve; and 0-80% by weight optionally stabilised ceria, which catalyst comprising at least one precious metal and optionally at least one non-precious metal, wherein: (i) a majority of the at least one precious metal is located at a surface of the extruded solid body; (ii) the at least one precious metal is carried in one or more coating layer(s) on a surface of the extruded solid body; (iii) at least one metal is present throughout the extruded solid body and is also present in a higher concentration at a surface of the extruded solid body; (iv) at least one metal is present throughout the extruded solid body and is also carried in one or more coating layer(s) on a surface of the extruded solid body; or (v) at least one metal is present throughout the extruded solid body, is present in a higher concentration at a surface of the extruded solid body and is also carried in one or more coating layer(s) on the surface of the extruded solid body.