A method for oxidizing carbon monoxide to carbon dioxide is provided which utilizes specific supported catalyst particles. The supported catalyst comprises catalyst particles that are supported on particles of an electrically conductive support selected from the group consisting of graphitic carbon
A method for oxidizing carbon monoxide to carbon dioxide is provided which utilizes specific supported catalyst particles. The supported catalyst comprises catalyst particles that are supported on particles of an electrically conductive support selected from the group consisting of graphitic carbon and a partially reduced oxide of a transition metal of the Magnéli phase selected from the group consisting of titanium, vanadium, zirconium, niobium, molybdenum, and mixtures thereof.
대표청구항▼
1. A method for oxidizing a carbon monoxide component of a gas to carbon dioxide comprising contacting said gas to supported catalyst particles comprising catalyst particles supported in and/or on electrically conductive support particles of a partially reduced oxide of a transition metal comprising
1. A method for oxidizing a carbon monoxide component of a gas to carbon dioxide comprising contacting said gas to supported catalyst particles comprising catalyst particles supported in and/or on electrically conductive support particles of a partially reduced oxide of a transition metal comprising a Magnéli phase selected from the group consisting of titanium, vanadium, zirconium, niobium, molybdenum, and mixtures thereof, wherein said supported particles act in synergy with said catalyst particles for the catalytic combustion of carbon monoxide. 2. The method of claim 1, wherein said catalyst particles comprise nanoscale particles and/or said support particles comprise nanoscale particles; (b) said catalyst particles comprise a transition metal or an oxide of a transition metal; or (c) said catalyst particles comprise a noble metal or an oxide of a noble metal. 3. The method of claim 1, wherein said partially reduced oxide of a transition metal comprising a Magnéli phase further comprises a dopant that is different than the transition metal. 4. The method of claim 3, wherein the dopant is selected from the group consisting of titanium, vanadium, zirconium, niobium, molybdenum, and mixtures thereof. 5. The method of claim 1, wherein the support particles further comprise a graphitic nanostructure. 6. The method of claim 1, wherein the support particles further comprise carbon nanotubes and at least some of the catalyst particles are enveloped by the carbon nanotubes. 7. The method of claim 1, wherein the support particles further comprise electrospun graphitic carbon. 8. A method for oxidizing a carbon monoxide component of a gas comprising contacting said gas to supported catalyst particles comprising catalyst particles supported in and/or on electrically conductive support particles of a partially reduced oxide of a transition metal comprising a Magnéli phase selected from the group consisting of titanium, vanadium, zirconium, niobium, molybdenum, and mixtures thereof, wherein said support particles act in synergy with said catalyst particles for the catalytic combustion of carbon monoxide, and wherein the gas is selected from the group consisting of mainstream cigarette smoke, sidestream cigarette smoke, vehicle exhaust emission, a gas used in a laser, a gas used in a fuel cell, and ambient air undergoing air filtration. 9. The method of claim 8, wherein said catalyst particles comprise nanoscale particles and/or said support particles comprise nanoscale particles; (b) said catalyst particles comprise a transition metal or an oxide of a transition metal; or (c) said catalyst particles comprise a noble metal or an oxide of a noble metal. 10. The method of claim 8, wherein said partially reduced oxide of a transition metal comprising a Magnéli phase further comprises a dopant that is different than the transition metal. 11. The method of claim 10, wherein the dopant is selected from the group consisting of titanium, vanadium, zirconium, niobium, molybdenum, and mixtures thereof. 12. The method of claim 8, wherein the support particles further comprise a graphitic nanostructure. 13. The method of claim 8, wherein the support particles further comprise carbon nanotubes and at least some of the catalyst particles are enveloped by the carbon nanotubes. 14. The method of claim 8, wherein the support particles further comprise electrospun graphitic carbon.
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