Catalysts to reduce carbon monoxide such as in the mainstream smoke of a cigarette
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B01J-021/12
B01J-021/00
출원번호
UP-0698192
(2007-01-26)
등록번호
US-7569510
(2009-08-24)
발명자
/ 주소
Deevi, Sarojini
Ettireddy, Padmanabha Reddy
출원인 / 주소
Philip Morris USA Inc.
대리인 / 주소
Buchanan Ingersoll & Rooney PC
인용정보
피인용 횟수 :
14인용 특허 :
11
초록▼
Catalysts for the conversion, or oxidation, of carbon monoxide to carbon dioxide. Cigarettes with filters containing the catalysts have acceptable resistance to draw. Additionally, the catalysts can be used to reduce the concentration of carbon monoxide from a vehicle exhaust emission, a gas used in
Catalysts for the conversion, or oxidation, of carbon monoxide to carbon dioxide. Cigarettes with filters containing the catalysts have acceptable resistance to draw. Additionally, the catalysts can be used to reduce the concentration of carbon monoxide from a vehicle exhaust emission, a gas used in a CO2 laser, a gas used in a fuel cell and/or ambient air undergoing air filtration.
대표청구항▼
What is claimed is: 1. A catalyst comprising noble metal nanoparticles on non-noble metal oxides incorporated in a porous support of mesoporous silica wherein the catalyst is catalytically active for oxidation of carbon monoxide and wherein the noble metal nanoparticles are selected from the group
What is claimed is: 1. A catalyst comprising noble metal nanoparticles on non-noble metal oxides incorporated in a porous support of mesoporous silica wherein the catalyst is catalytically active for oxidation of carbon monoxide and wherein the noble metal nanoparticles are selected from the group consisting of gold, palladium, platinum and mixtures thereof and the non-noble metal oxides are selected from the group consisting of titania, alumina, ceria, zirconia, iron oxide, zinc oxide, magnesium oxide, and mixtures thereof. 2. The catalyst of claim 1, wherein the mesoporous silica is selected from the group consisting of SBA-15, SBA-16, MCM-41, and MCM-48. 3. A catalyst comprising noble metal nanoparticles on non-noble metal oxides incorporated in a porous support wherein the catalyst is catalytically active for oxidation of carbon monoxide and wherein the noble metal nanoparticles are gold, the non-noble metal oxides are selected from the group consisting of ceria, zirconia, iron oxide, magnesium oxide, and mixtures thereof and the porous support is mesoporous silica. 4. The catalyst of claim 1, comprising 1-2 weight % gold-titania. 5. A cigarette comprising a filter containing the catalyst of claim 1. 6. A method of making a catalyst catalytically active for oxidation of carbon monoxide comprising: treating a catalyst comprising noble metal nanoparticles on non-noble metal oxides incorporated in a support to develop porosity in the support, wherein the noble metal nanoparticles are gold, the non-noble metal oxides are selected from the group consisting of ceria, zirconia, iron oxide, magnesium oxides, and mixtures thereof and the porous support is mesoporous silica. 7. The method of claim 6, wherein the catalyst is subjected to an oxidation treatment to develop porosity in the support by heating the catalyst in the presence of an oxidizing agent selected from the group consisting of steam, carbon dioxide, air and mixtures thereof. 8. A cigarette comprising a filter containing a catalyst, the catalyst comprising noble metal nanoparticles on non-noble metal oxides incorporated in a porous support, wherein the catalyst is catalytically active for oxidation of carbon monoxide, the noble metal nanoparticles are selected from the group consisting of gold, palladium, platinum and mixtures thereof, the non-noble metal oxides are selected from the group consisting of titania, alumina, ceria, zirconia, iron oxide, zinc oxide, magnesium oxide, and mixtures thereof, the support is selected from the group consisting of carbon beads, activated carbon, mesoporous silica, mesoporous titania, mesoporous alumina, and mesoporous ceria and the mesoporous silica is selected from the group consisting of SBA-15, SBA-16, MCM-41, and MCM-48.
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이 특허에 인용된 특허 (11)
Upchurch Billy T. (Virginia Beach VA) Miller Irvin M. (Newport News VA) Brown David R. (Norfolk VA) Davis Patricia P. (Newport News VA) Schryer David R. (Hampton VA) Brown Kenneth G. (Virginia Beach , Catalyst for carbon monoxide oxidation.
Adams John M. ; Braunshteyn Michael S. ; Hajaligol Mohammad R. ; Sanderson Wesley G., Heater and method for efficiently generating an aerosol from an indexing substrate.
Deevi Seetharama C. (Midlothian VA) Hajaligol Mohammad R. (Richmond VA) Herman Herbert (Port Jefferson VA) Higgins Charles T. (Richmond VA) Watkins Michael L. (Chester VA) Waymack Bruce E. (Prince Ge, Heater for an electric flavor-generating article.
Fleischhauer Grier S. (Midlothian VA) Hayes Patrick H. (Chester VA) Morgan Constance H. (Chesterfield VA) Hajaligol Mohammad R. (Richmond VA) Watkins Michael L. (Chester VA) Nichols Walter A. (Richmo, Heater for use in an electrical smoking system.
Luan,Zhaohua; Fournier,Jay A; Deevi,Sarojini; Skinner,Ila; Koller,Kent B.; Gee,Diane L., Nanoscale catalyst particles/aluminosilicate to reduce carbon monoxide in the mainstream smoke of a cigarette.
Upchurch Billy T. (Virginia Beach VA) Davis Patricia A. (Newport News VA) Miller Irvin M. (Newport News VA), Process for making a noble metal on tin oxide catalyst.
Verdier, Stephan; Criniere, Guillaume; Ifrah, Simon; Jorge Coelho Marques, Rui, Catalyst compositions based on nanoparticles of a zirconium oxide, a titanium oxide or a mixed zirconium/titanium oxide deposited onto an alumina or aluminum oxyhydroxide support therefor.
Reddy, Budda V.; Rasouli, Firooz, Reduction of carbon monoxide and nitric oxide in smoking articles using nanoscale particles and/or clusters of nitrided transition metal oxides.
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