System and Method for Two and Three Way NB-ZR Catalyst

1 . A method for reducing emissions from an engine having associated therewith an exhaust system, the method providing a catalyst system for a catalytic reaction, the method further comprising the steps of:

providing a substrate; and

depositing on said substrate a washcoat suitable for deposition on the substrate and comprising at least one carrier material oxide, at least one catalyst, or mixtures thereof;

wherein the at least one catalyst comprises at least one material selected from the group consisting of niobium, zirconium, tin, and mixtures thereof.

2 . The method of claim 1 , wherein the at least one carrier material oxide is selected from the group consisting of cerium oxide, alumina, lanthanum doped alumina, titanium oxide, zirconia, and ceria/zirconia.

3 . The method of claim 1 , wherein the tin is deposited by impregnation.

4 . The method of claim 1 , wherein a T50 conversion temperature for hydrocarbons is less than about 500 degrees Celsius.

5 . The method of claim 1 , wherein the at least one catalyst is prepared by co-precipitation utilizing at least one material selected from the group consisting of niobium pentoxide, niobium oxalate, or mixtures thereof.

6 . The method of claim 5 , wherein the preparation further comprises sulfuric acid acting as a solvent.

7 . The method of claim 1 , wherein the washcoat further comprises at least one oxygen storage material.

8 . The method of claim 7 , wherein the oxygen storage material is selected from the group consisting of at least one of cerium, zirconium, neodymium, praseodymium, samarium, lanthanum, and yttrium.

9 . The method of claim 7 , wherein the at least one catalyst is precipitated on said at least at least one oxygen storage material.

10 . The method of claim 1 , wherein the at least one catalyst is precipitated on the at least one carrier material oxide.

11 . A method for reducing emissions from an engine having associated therewith an exhaust system, the method providing a catalyst system effective for providing a catalytic reaction, the method further comprising the steps of:

providing a substrate; and

depositing on said substrate a washcoat suitable for deposition on the substrate and comprising at least one carrier material oxide, at least one catalyst, or mixtures thereof;

wherein the at least one catalyst comprises at least one material selected from the group consisting of niobium oxide, zirconium oxide, cerium oxide, cerium-niobium oxide, and aluminum zirconium oxide, and mixtures thereof.

12 . The method of claim 11 , wherein the at least one carrier material oxide is selected from the group consisting of cerium oxide, alumina, lanthanum doped alumina, titanium oxide, zirconia, and ceria/zirconia.

13 . The method of claim 11 , wherein the at least one catalyst further comprises at least one oxide selected from the group consisting of tin oxide, and tin dioxide, and mixtures thereof

14 . The method of claim 13 , wherein the at least one oxide is deposited by impregnation.

15 . The method of claim 11 , wherein a T50 conversion temperature for hydrocarbons is less than about 500 degrees Celsius.

16 . The method of claim 11 , wherein the catalyst is prepared by co-precipitation utilizing at least one material selected from the group consisting of niobium pentoxide, and niobium oxalate, or mixtures thereof.

17 . The method of claim 16 , wherein the preparation further utilizes sulfuric acid as a solvent.

18 . The method of claim 11 , wherein the washcoat further comprises at least one oxygen storage material.

19 . The method of claim 18 , wherein the oxygen storage material is selected from the group consisting of at least one of cerium, zirconium, neodymium, praseodymium, samarium, lanthanum, and yttrium.

20 . The method of claim 18 , wherein the at least one catalyst is precipitated on the at least at least one oxygen storage material.

21 . The method of claim 11 , wherein the at least one catalyst is precipitated on the at least one carrier material oxide.