Patent ID: 9107452
Filing Date: 2015-08-18
Classification: A24B,A24D,B01J

Abstract:
1. A method of making a cigarette, comprising: (i) adding a catalyst to tobacco cut filler, cigarette paper and/or a cigarette filter, wherein the catalyst comprises nanoscale metal particles and/or nanoscale metal oxide particles supported on high surface area support particles; (ii) providing the cut filler to a cigarette making machine to form a tobacco column; (iii) placing a paper wrapper around the tobacco column to form a tobacco rod; and (iv) attaching the filter to the tobacco rod to form the cigarette, wherein the nanoscale metal and/or metal oxide particles include a metal selected from the group consisting of B, Mg, Si, Ti, Fe, Co, Ni, Zn, Ge, Zr, Nb, Mo, Ru, Rh, Ag, Sn, Hf, Ta, W, Re, Os, Ir, Pt and mixtures thereof, further comprising forming the catalyst by: combining a metal precursor and a solvent to form a metal precursor solution; combining the metal precursor solution with a dispersion of nanoscale high surface area support particles to form a mixture; and heating the mixture to a temperature sufficient to thermally decompose the metal precursor to form nanoscale particles within and/or on the high surface area support, wherein the high surface area support particles are selected from the group consisting of iron oxide, cobalt oxide, nickel oxide, copper oxide, yttria, manganese oxide optionally doped with palladium and mixtures thereof.