Patent ID: 7641875

Claim:
A multi-phase catalyst for simultaneous conversion of oxides of nitrogen, carbon monoxide, and hydrocarbons represented by the general formula: Ce y Ln 1-x A x+s MO z , wherein: A is an element selected from the group consisting of Mg, Ca, Sr, Ba, Li, Na, K, Cs, Rb, and any combination thereof; Ln is a mixture of elements originally in the form of single-phase mixed lanthanides collected from natural ores, a single lanthanide, or a mixture of artificial lanthanides; M is an element selected from the group consisting of Fe, Mn, Cr, Ni, Co, Cu, V, Zr, Pt, Pd, Rh, Ru, Ag, Au, Al, Ga, Mo, W, Ti, and any combination thereof; x is a number defined by 0≦x<1.0; y is a number defined by 0≦y<10; s is a number defined by 0≦s<10; and z is a number defined by z>0, where s=0 only when y>0 and y=0 only when s>0.