Catalysts For Co Oxidation,Voc Combustion And Nox Reduction And Methods Of Making And Using The Same

1 . A method for oxidizing carbon monoxide, the method comprising contacting a carbon monoxide containing gas with a catalyst in the presence of an O 2 containing gas, wherein the catalyst comprises: a) cobalt, its oxides or mixtures thereof, and b) ruthenium, its oxides or mixtures thereof.

2 . A method for converting nitrogen oxide, the method comprising contacting a nitrogen oxide containing gas with a catalyst comprising cobalt, its oxides or mixtures thereof and ruthenium, its oxides or mixtures thereof.

3 . A method for converting volatile organic compounds, the method comprising contacting a volatile organic compound containing gas with a catalyst in the presence of an O 2 containing gas, wherein the catalyst comprises: a) cobalt, its oxides or mixtures thereof; and b) ruthenium, its oxides or mixtures thereof.

4 - 13 . (canceled)

14 . The method of claim 1 , wherein the catalyst composition comprises a carrier selected from the group consisting of alumina, zirconia, titania, ceria, magnesia, lanthania, niobia, yttria, silica, iron oxide, cobalt oxide, active carbon, bentonite, zeolite, clay, spinels and mixtures thereof.

15 - 17 . (canceled)

18 . The method of claim 1 , wherein the catalyst further comprising cerium, its oxides or mixtures thereof, or yttrium, its oxides or mixtures thereof.

19 - 28 . (canceled)

29 . The method of claim 1 , wherein the catalyst further comprising a noble metal, wherein the ratio of cobalt to noble metal is from about 1000:1 to about 1:1 by weight.

30 - 35 . (canceled)

36 . The method of claim 1 , wherein the catalyst has an essential absence of platinum, molybdenum, or both platinum and molybdenum.

37 . (canceled)

38 . The method of claim 1 , wherein the catalyst further comprising copper, chromium, manganese, niobium, tin, titanium, silver, zirconium, cerium, iron, nickel, rhenium, rare earth, their oxides or mixtures thereof in an amount of 0.1% to about 10% by weight of the catalyst.

39 - 54 . (canceled)

55 . The method of any of claim 2 , further comprising contacting the nitrogen oxide containing gas with an O 2 containing gas, ammonia or urea.

56 - 61 . (canceled)

62 . A catalyst for use in a reaction selected from the group consisting of (i) carbon monoxide oxidation reactions in the presence of an O 2 containing gas, (ii) nitrogen oxide conversion reactions, (iii) volatile organic compound conversion reactions in the presence of an O 2 containing gas, and (iv) combinations thereof, the catalyst comprising cobalt, its oxides or mixtures thereof and ruthenium, its oxides or mixtures thereof.

63 - 65 . (canceled)

66 . The method of claim 2 , wherein the catalyst comprises a carrier selected from the group consisting of alumina, zirconia, titania, ceria, magnesia, lanthania, niobia, yttria, silica, iron oxide, cobalt oxide, active carbon, bentonite, zeolite, clay, spinels and mixtures thereof.

67 . The method of claim 2 , wherein the catalyst further comprising cerium, its oxides or mixtures thereof, or yttrium, its oxides or mixtures thereof.

68 . The method of claim 2 , wherein the catalyst further comprising a noble metal, wherein the ratio of cobalt to noble metal is from about 1000:1 to about 1:1 by weight.

69 . The method of claim 2 , wherein the catalyst has an essential absence of platinum, molybdenum, or both platinum and molybdenum.

70 . The method of claim 2 , wherein the catalyst further comprising copper, chromium, manganese, niobium, tin, titanium, silver, zirconium, cerium, iron, nickel, rhenium, rare earth, their oxides or mixtures thereof in an amount of 0.1% to about 10% by weight of the catalyst.

71 . The method of claim 3 , wherein the catalyst comprises a carrier selected from the group consisting of alumina, zirconia, titania, ceria, magnesia, lanthania, niobia, yttria, silica, iron oxide, cobalt oxide, active carbon, bentonite, zeolite, clay, spinels and mixtures thereof.

72 . The method of claim 3 , wherein the catalyst further comprising cerium, its oxides or mixtures thereof, or yttrium, its oxides or mixtures thereof.

73 . The method of claim 3 , wherein the catalyst further comprising a noble metal, wherein the ratio of cobalt to noble metal is from about 1000:1 to about 1:1 by weight.

74 . The method of claim 3 , wherein the catalyst has an essential absence of platinum, molybdenum, or both platinum and molybdenum.

75 . The method of claim 3 , wherein the catalyst further comprising copper, chromium, manganese, niobium, tin, titanium, silver, zirconium, cerium, iron, nickel, rhenium, rare earth, their oxides or mixtures thereof in an amount of 0.1% to about 10% by weight of the catalyst.

76 . The catalyst of claim 62 , wherein the catalyst comprises a carrier selected from the group consisting of alumina, zirconia, titania, ceria, magnesia, lanthania, niobia, yttria, silica, iron oxide, cobalt oxide, active carbon, bentonite, zeolite, clay, spinels and mixtures thereof.

77 . The catalyst of claim 62 , wherein the catalyst further comprising cerium, its oxides or mixtures thereof, or yttrium, its oxides or mixtures thereof.

78 . The catalyst of claim 62 , wherein the catalyst further comprising a noble metal, wherein the ratio of cobalt to noble metal is from about 1000:1 to about 1:1 by weight.

79 . The catalyst of claim 62 , wherein the catalyst has an essential absence of platinum, molybdenum, or both platinum and molybdenum.

80 . The catalyst of claim 62 , wherein the catalyst further comprising copper, chromium, manganese, niobium, tin, titanium, silver, zirconium, cerium, iron, nickel, rhenium, rare earth, their oxides or mixtures thereof in an amount of 0.1% to about 10% by weight of the catalyst.