Tobacco powder supported catalyst particles
Cut filler compositions, cigarettes, methods for making cut filler compositions and cigarettes, and methods for treating mainstream tobacco smoke of cigarettes are provided that use catalyst particles capable of converting carbon monoxide to carbon dioxide. The catalyst particles are supported on tobacco powder. The tobacco powder supported catalyst particles can be prepared by dry admixing the catalyst particles and tobacco powder or by combining a dispersion of catalyst particles with the tobacco powder.
1. A cut filler composition comprising tobacco and an admixture comprising catalyst particles and tobacco powder particles, wherein the catalyst particles are supported on the tobacco powder particles.
2. The cut filler composition of claim 1 , wherein the catalyst particles comprise one or more metallic elements selected from the group consisting of Group IB, IIB, IIIB, IVB, VB, VIB, VIIB, VIII, IIIA and IVA elements of the Periodic Table of Elements.
3. The cut filler composition of claim 1 , wherein the catalyst particles comprise:
copper manganese spinel and/or metal oxides selected from the group consisting of manganese oxide, iron oxide, copper oxide, cerium oxide and mixtures thereof; and/or
catalyst particles with a specific surface area from about 10 to 2500 m 2 /g; and/or
catalyst particles that at least partially cover the surface of the tobacco powder particles; and/or
catalyst particles with an average particle size of less than about 5 μm.
4. The cut filler composition of claim 1 , wherein the admixture comprises:
a dry admixture; and/or
from about 0.1 to 50 wt. % catalyst particles supported on tobacco powder particles.
5. The cut filler composition of claim 1 , wherein the tobacco powder particles have an average particle size of less than 500 microns.