Composition for absorbing nitrogen oxide from tobacco smoke, met

Details Composition for absorbing nitrogen oxide from tobacco smoke, met Composition for absorbing nitrogen oxide from tobacco smoke, met

1989-07-14

1992-01-28

Millin, V.

Tobacco

Smoke separator or treater

By chemical reaction, e.g., ion-exchange, chelating,...

131341, 131342, 131345, A24D 306, A24D 308, A24D 310, A24D 312

Patent

active

050835793

ABSTRACT:
The invention consists of a method for absorbing nitrogen oxide and carbon monoxide from tobacco smoke. It includes a base made of acetate, cellulose and acetate-cellulose fibers. The base is impregnated with an absorbing agent, and the absorbing agent may include a complex compound of ferrous iron and thiol-containing low-molecular ligands. A method for impregnating the base of the filter with the absorbing agent comprises immersing the base in an aqueous suspension of a complex compound of ferrous iron and thiol-containing low-molecular ligands and then drying it; or, treating the base with an aqueous solution of a thiol-containing low-molecular ligand, treating the resulting compound with an aqueous solution of ferrous salts and then drying the resulting compound. A composition for absorbing nitrogen oxide and carbon monoxide from smoke comprises a complex compound of ferrous iron and thiol-containing low-molecular ligands. A method of removing nitrogen oxide and carbon monoxide from smoke consists of passing the smoke through an absorbing agent consisting of a complex compound of ferrous iron and thiol-containing low-molecular ligands.

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DeRubertis F. et al., Science, vol. 193, pp. 897-899, 1976.
Arnold W. P. et al., Science, vol. 198, pp. 934-936, 1977.
Murad F. et al., Advances in Cyclic Nucleotied Research, vol. II, pp. 175-204, 1979.

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