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1. WO2016100352 - SYSTÈMES CATALYTIQUES À BASE DE MÉTAUX DU GROUPE DU PLATINE (PGM) SYNERGISÉS COMPRENANT DU RHODIUM POUR UNE APPLICATION À CONVERTISSEUR CATALYTIQUE À TROIS VOIES (TWC)

Note: Texte fondé sur des processus automatiques de reconnaissance optique de caractères. Seule la version PDF a une valeur juridique

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CLAIMS

1. A synergized platinum group metals (SPGM) catalyst system comprising:

a) an overcoat comprising a platinum group metal (PGM) catalyst comprising rhodium supported on a carrier material oxide;

b) a washcoat comprising a Cu-Mn spinel supported on a support oxide; and

c) a substrate.

2. The SPGM catalyst system of claim 1, wherein the substrate is ceramic.

3. The SPGM catalyst system of claim 1, wherein the carrier oxide material is selected from the group consisting of aluminum oxide, doped aluminum oxide, zirconium oxide, doped zirconia, titanium oxide, tin oxide, silicon dioxide, zeolite, and mixtures thereof.

4. The SPGM catalyst system of claim 1, wherein the carrier material oxide is aluminum oxide.

5. The SPGM catalyst system of claim 1, wherein the Cu-Mn spinel is according to the formula

CuxMn3_x04.

6. The SPGM catalyst system of claim 1, wherein the Cu-Mn spinel is CuMn204.

7. The SPGM catalyst system of claim 1, wherein the support oxide is a doped Zr02 support oxide.

8. The SPGM catalyst system of claim 1, wherein the doped Zr02 support oxide is a Niobium-zirconia support oxide.

9. The SPGM catalyst system of claim 1, wherein the rhodium is about 1 g/ft3 of rhodium.

10. The SPGM catalyst system of claim 1, wherein the SPGM catalyst system is hydrothermally aged.

11. The SPGM catalyst system of claim 10, wherein the hydrothermal aged system was heated at about 900°C for about four hours.

12. The SPGM catalyst system of claim 1, wherein the SPGM catalyst system is fuel cut aged.

13. The SPGM catalyst system of claim 12, wherein the fuel cut aged system was heated at about 800°C for about twenty hours.

14. The SPGM catalyst system of claim 2, wherein the ceramic is ceramic foam.

15. The SPGM catalyst system of claim 1, wherein the substrate is a honeycomb structure.

16. The SPGM catalyst system of claim 1, wherein the substrate is a foam.

17. The SPGM catalyst system of claim 16, wherein the foam is selected from the group consisting of a ceramic foam, a metallic foam, a reticulated foam, and combinations thereof.

18. The SPGM catalyst system of claim 1, wherein the substrate is a metallic material, refractive material, or a combination thereof.

19. The SPGM catalyst system of claim 1, wherein the PGM catalyst further comprises palladium, platinum, or the combination of palladium and platinum.

20. The SPGM catalyst system of claim 1, wherein the SPGM catalyst system a) reduces nitrogen oxide to nitrogen and oxygen, b) oxidizes carbon monoxide to carbon dioxide, and c) oxidizes unburnt hydrocarbons to carbon dioxide and water.

21. A synergized platinum group metals (SPGM) catalyst system comprising:

a) an overcoat comprising a platinum group metal (PGM) catalyst comprising rhodium supported on aluminum oxide;

b) a washcoat comprising a CuMn204 spinel supported on a doped Zr02 support oxide; and

c) a ceramic substrate.

22. A method of decreasing pollutants comprising applying exhaust to a synergized platinum group metals (SPGM) catalyst system comprising:

a) an overcoat comprising a platinum group metal (PGM) catalyst comprising rhodium supported on a carrier material oxide;

b) a washcoat comprising a Cu-Mn spinel supported on a support oxide; and

c) a substrate.

23. The method of claim 22, wherein the exhaust is from an engine-equipped machine.

24. The method of claim 22, wherein the engine-equipped machine is an automobile, airplane, train, all-terrain vehicle, boat, or mining equipment.

25. The method of claim 22, wherein the exhaust is from a utility plant, processing plant, or manufacturing plant.

26. The method of claim 22, wherein the SPGM catalyst system converts about 72% of nitrogen oxide.

27. The SPGM catalyst system of claim 22, wherein the substrate is ceramic.

28. The SPGM catalyst system of claim 22, wherein the carrier oxide material is selected from the group consisting of aluminum oxide, doped aluminum oxide, zirconium oxide, doped zirconia, titanium oxide, tin oxide, silicon dioxide, zeolite, and mixtures thereof.

29. The SPGM catalyst system of claim 22, wherein the carrier material oxide is aluminum oxide.

30. The SPGM catalyst system of claim 22, wherein the Cu-Mn spinel is according to the formula

CuxMn3.x04.

31. The SPGM catalyst system of claim 22, wherein the Cu-Mn spinel is CuMn204.

32. The SPGM catalyst system of claim 22, wherein the support oxide is a doped Zr02 support oxide.

33. The SPGM catalyst system of claim 22, wherein the doped Zr02 support oxide is a Niobium-zirconia support oxide.

34. The SPGM catalyst system of claim 22, wherein the rhodium is about 1 g/ft3 of rhodium.

35. The SPGM catalyst system of claim 22, wherein the SPGM catalyst system is hydrothermally aged.

36. The SPGM catalyst system of claim 35, wherein the hydrothermal aged system was heated at about 900°C for about four hours.

37. The SPGM catalyst system of claim 22, wherein the SPGM catalyst system is fuel cut aged.

38. The SPGM catalyst system of claim 37, wherein the fuel cut aged system was heated at about 800°C for about twenty hours.

39. The SPGM catalyst system of claim 23, wherein the ceramic is ceramic foam.

40. The SPGM catalyst system of claim 22, wherein the substrate is a honeycomb structure.

41. The SPGM catalyst system of claim 22, wherein the substrate is a foam.

42. The SPGM catalyst system of claim 41, wherein the foam is selected from the group consisting of a ceramic foam, a metallic foam, a reticulated foam, and combinations thereof.

43. The SPGM catalyst system of claim 22, wherein the substrate is a metallic material, refractive material, or a combination thereof.

44. The SPGM catalyst system of claim 22, wherein the PGM catalyst further comprises palladium, platinum, or the combination of palladium and platinum.

45. The SPGM catalyst system of claim 22, wherein the SPGM catalyst system a) reduces nitrogen oxide to nitrogen and oxygen, b) oxidizes carbon monoxide to carbon dioxide, and c) oxidizes unburnt hydrocarbons to carbon dioxide and water.