Smoking articles and smoking materials

Details Smoking articles and smoking materials Smoking articles and smoking materials

A - Human Necessities

24

D

A24D 3/16 (2006.01) A24B 15/28 (2006.01) A24D 3/04 (2006.01) B01D 53/62 (2006.01) B01J 23/52 (2006.01)

Patent

CA 2565830

A smoking article such as a cirgarette, or a smoke filter (3) or other component thereof, comprises a catalyst (3b) for the oxidation of carbon monoxide to carbon dioxide. The catalyst (3b) comprises gold, and an oxide of zinc or titanium. Titania and mixed oxides of zinc and copper or aluminium are preferred (TiO2, ZnO, ZnA1Ox or CuZnOx). The gold preferably comprises species in the metallic state (Au0), together with species in an oxiddise state (Au.delta.+).

L'invention porte sur un article à fumer tel qu'une cigarette, son filtre (3) ou d'autres de ses composants pourvus d'un catalyseur (3b) oxydant le CO en CO2. Ledit catalyseur (3b) comporte de l'or et un oxyde de zinc ou de titane. La composition préférée est de l'oxyde de titane et un mélange d'oxydes de zinc et de cuivre ou d'aluminium (TiO2, ZnO, ZnA1Ox ou CuZnOx). L'or se présente de préférence à l'état métallique (Au0), associé à l'état oxydé (Au<SP>?+</SP>).

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