A method and apparatus for treating the atmosphere comprising moving a vehicle through the atmosphere, the vehicle having at least one atmosphere contacting surface and a pollutant treating composition located on said surface. A specific embodiment comprises coating a motor vehicle radiator with pol
A method and apparatus for treating the atmosphere comprising moving a vehicle through the atmosphere, the vehicle having at least one atmosphere contacting surface and a pollutant treating composition located on said surface. A specific embodiment comprises coating a motor vehicle radiator with pollutant treating catalyst.
대표청구항▼
1. A method of applying a mixture to a substrate comprising the steps of:forming a mixture comprising water and a particulate catalytically-active material, the catalytically-active material comprising a manganese component having a BET N 2 surface area of greater than 150 m 2 /g, and wherein appr
1. A method of applying a mixture to a substrate comprising the steps of:forming a mixture comprising water and a particulate catalytically-active material, the catalytically-active material comprising a manganese component having a BET N 2 surface area of greater than 150 m 2 /g, and wherein approximately 90% of the particles are less than 8 micrometers;adding to the mixture a dispersant comprising a compound selected from the group consisting of a polymer containing carboxylic acid groups, an ester of the polymer and a salt of the polymer;adding to the mixture a polymeric binder selected from the group consisting of an acrylic polymer and a poly(vinyl) acetate; andafter adding the dispersant and polymeric binder, applying the mixture to a motor vehicle contacting surface. 2. The method of claim 1, wherein the slurry is applied by spray coating, brushing, or dipping. 3. The method of claim 2, wherein the slurry is applied by spray coating. 4. The method as recited in claim 1 wherein the atmosphere contacting surface is selected from the group consisting of the outer surface of an air conditioner condenser, a radiator, a radiator fan, an air charge cooler, a wind deflector, engine oil cooler, a transmission oil cooler and a power steering fluid cooler. 5. The method of as recited in claim 1 further comprising adjusting the pH of the mixture to at least 8.5. 6. A method of forming a slurry comprising the steps of:forming a mixture comprising water and a particulate catalytically-active material, the catalytically-active material comprising a manganese component having a BET N 2 surface area of greater than 150 m 2 /g, and wherein approximately 90% of the particles are less than 8 micrometers;adding to the mixture a dispersant comprising a compound selected from the group consisting of a polymer containing carboxylic acid groups, an ester of the polymer and a salt of the polymer; andadding to the mixture a polymeric binder selected from the group consisting of an acrylic polymer and a poly(vinyl) acetate. 7. The method of claim 6, wherein the dispersant is a dicarboxylic acid ester or salt derivative. 8. The method of claim 7, wherein the dispersant is a maleic acid/isobutylene copolymer. 9. The method of claim 8, wherein the dispersant is a salt of a maleic acid/isobutylene copolymer. 10. The method of claim 9, wherein the dispersant is a sodium salt of a maleic acid/isobutylene copolymer. 11. The method of claim 6, wherein the dispersant is a polymeric acrylate. 12. The method of claim 11, wherein the dispersant is a salt of a polymeric acrylate. 13. The method of claim 12, wherein the dispersant is a sodium salt of a polyacrylate/methacrylate copolymer. 14. The method of as recited in claim 6 further comprising adjusting the pH of the mixture to at least 8.5. 15. The method of claims 14 , 6 , 11 , 12 , 13 , 7 , 8 , 9 , or 10 , wherein the binder is an acrylic latex binder or an ethylene vinyl acetate binder. 16. The method as recited in claims 14 , 6 or 1 wherein the catalytically active material further comprises a platinum group metal component. 17. The method as recited in claim 16 further comprising the step of calcining the catalytically active material prior to adding the polymeric binder. 18. The method as recited in claim 16 further comprising the step of reducing the catalytically active material. 19. The method as recited in claims 14 , 6 , or 1 wherein the manganese component is MnO 2 . 20. The method as recited in claim 48 wherein the MnO 2 is α-MnO 2 . 21. The method as recited in claim 20 wherein the α-MnO 2 is selected from the group consisting of hollandite, cryptomelane, manjiroite and coronadite. 22. The method as recited in claim 21 wherein the α-MnO 2 is cryptomelane having a surface area of about from 200 to 350 m 2 /g. 23. The method as recited in claim 20 wherein the α-MnO 2 comprises up to 2% by weight of silica. 24. The method of claims 14 , 6 or 1 wherein the mixture further comprises thickeners, biocides, and antioxidants. 25. A composition made by the method of claims 14 , 6 , 11 , 12 , 13 , 7 , 8 , 9 , or 10 . 26. The composition of claim 25, wherein the binder is an acrylic latex binder or an ethylene vinyl acetate binder. 27. The composition of claim 26 further comprising at least one additive selected from the group consisting of a thickener, a biocide, and an antioxidant. 28. A catalytic slurry for adhering to a substrate comprising:a particulate catalytically-active material comprising a manganese component having a BET N 2 surface area of greater than 150 m 2 /g, and wherein approximately 90% of the particles are less than 8 micrometers;a dispersant comprising a compound selected from the group consisting of a polymer containing carboxylic acid groups, an ester of the polymer and a salt of the polymer;a polymeric binder selected from the group consisting of an acrylic polymer and a poly(vinyl) acetate; andwater.
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