Patent ID: 7879759

Claim:
A composition for the catalytic reduction of NO x compounds, comprising an active catalyst component deposited on the surface of a porous support; wherein said active component comprises one or more first metal(s) and/or metal oxide(s); and wherein said porous support comprises: a) a crystalline phase comprising titanium dioxide, a titanium-zirconium mixed oxide or a mixture of titanium dioxide and a titanium-zirconium mixed oxide; b) an amorphous phase that comprises zirconium oxide; and c) about 0.1% to about 5% by weight of one or more of second metal oxide(s) and/or a metalloid oxide(s) deposited on the surface of said catalyst support, wherein said second metal oxide(s) may be the same or different than the first metal oxide; wherein said first metal(s) and/or metal oxide(s) exhibit catalytic activity for reduction of NOx compounds; and greater than 25% of the pore volume of said porous support is comprised of pores with a diameter greater than 150 angstroms.