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 cigarette comprising a tobacco rod and a cigarette paper for said tobacco rod, said paper which is combustible, burns and ashes, comprising, in combination, a rare earth metal oxide and an essentially non-combustible finely divided porous particulate adjunct for said rare earth metal oxide wherein said rare earth metal oxide releases oxygen at free burn rate temperatures for said cigarette.
2. A cigarette of claim 1 , wherein said rare earth metal oxide is cerium oxide and said adjunct is zeolite.
3. A cigarette of claim 2 , wherein said cerium oxide is fixed to the surface of said zeolite.
4. A cigarette of claim 1 , wherein said rare earth metal oxide is cerium oxide and said adjunct is zirconium oxide.
5. A cigarette of claim 4 , wherein said cerium oxide and zirconium oxide form a mixed metal oxide.
6. The cigarette of claim 4 , wherein the paper further comprises at least one metal and metal oxide oxidation catalyst, said metal and/or metal oxide oxidation catalyst being selected from the group consisting of precious metals, transition metal oxides, rare earth metal oxides, metals from groups HA and IVA, and mixtures thereof.
7. A cigarette of claim 6 , wherein said selected metal or metal oxide oxidation catalyst is selected from the group consisting of platinum, palladium, copper oxide, iron oxide, magnesium oxide, silver oxide, titanium oxide, zirconium oxide and mixtures thereof.
8. A cigarette of claim 6 , wherein said transition metal oxide is iron oxide.
9. A low sidestream smoke cigarette comprising a tobacco rod, and a treatment paper, which is combustible, burns and ashes, said treatment paper having a sidestream smoke treatment composition, said treatment composition comprising, in combination, a rare earth metal oxide and an essentially non-combustible finely divided porous particulate adjunct for said rare earth metal oxide wherein said rare earth metal oxide releases oxygen at free burn rate temperatures for said cigarette.
10. A cigarette of claim 9 , wherein said treatment composition comprises, in combination, a mixture of said rare earth metal oxide and a transition metal oxide and an essentially non-combustible finely divided porous particulate adjunct for said mixture.
11. A cigarette of claim 10 , wherein said rare earth metal oxide is cerium oxide, said transition metal oxide is zirconium oxide and the porous particulate adjunct is zeolite.
12. A cigarette of claim 11 , wherein said cerium oxide and zirconium oxide is a mixed metal oxide used in admixture with the zeolite.