Low sidestream smoke cigarette with combustible paper
A low sidestream smoke cigarette comprises a conventional tobacco rod, and a combustible treatment paper having a sidestream smoke treatment composition. The treatment composition comprises in combination, an oxygen storage and donor metal oxide oxidation catalyst and an essentially non-combustible finely divided porous particulate adjunct for said catalyst.
1. A method comprising:
mixing a treatment composition with paper furnish to form a paper slurry;
forming a cigarette paper from the paper slurry;
forming a cigarette with the cigarette paper;
wherein the treatment composition comprises in combination, an oxygen storage and donor metal oxide oxidation catalyst and an essentially non-combustible finely divided porous particulate adjunct, wherein said oxygen storage and donor metal oxide oxidation catalyst releases oxygen at free burn rate temperatures for said cigarette.
2. A method of claim 1 , wherein said catalyst and said adjunct have an average particle size less than about 30 μm.
3. A method of claim 2 , wherein said adjunct is selected from the group consisting of clays, essentially non-combustible milled fibres, monolithic mineral based materials, essentially non-combustible activated carbon, zeolites and mixtures thereof, and said catalyst is selected from the group consisting of a transition metal oxide selected from the group consisting of group VB, VIIB, VIII, IB metal oxides and mixtures thereof; a rare earth metal oxide and mixtures thereof; and a mixture of said transition metal oxide and said rare earth metal oxide.
4. A method of claim 3 , wherein said non-combustible milled fibres are selected from the group consisting of zirconium fibres, zirconium/cerium fibres, ceramic fibres, carbon fibres and mixtures thereof.
5. A method of claim 1 , wherein said catalyst is a mixture of a rare earth metal oxide and a transition metal oxide, said transition metal oxide being selected from the group consisting of oxides of group IVB, VB, VIB, VIIB, VIII, IB metals and mixtures thereof, and said rare earth metal oxides are selected from the group consisting of oxides of scandium, yttrium, lanthanum, lanthanide metals and mixtures thereof.
6. A method of claim 1 , wherein said catalyst is cerium oxide and said adjunct is a zeolite.
7. A method of claim 1 , further comprising a processing aid selected from the group consisting of zirconium fibres and zirconium/cerium fibres.
8. A method of claim 1 , wherein said catalyst is a mixture of a rare earth metal oxide and a transition metal oxide, said transition metal oxide being selected from the group consisting of group IVB, VB, VIB, VIIB, VIII, IB metal oxides and mixtures thereof.
9. A method of claim 8 , wherein said adjunct is selected from the group consisting of clays, essentially non-combustible milled fibres, monolithic mineral based materials, essentially non-combustible activated carbon, zeolites and mixtures thereof, and said catalyst is selected from the group consisting of a transition metal oxide selected from the group consisting of group VIIB and VIII metal oxides and mixtures thereof; a rare earth metal oxide and mixtures thereof; and a mixture of said transition metal oxide and said rare earth metal oxide.