Preparation method of cigarette filter additive for removing NO

Abstract

The invention relates to a preparation method of a cigarette filter additive for removing NO. The additive aims at the containing of harmful substances comprising sulfur dioxide, formaldehyde, nitrogen monoxide in cigarette smoke. The cigarette filter additive is prepared by adopting active carbon fiber felts as a raw material and copper nitrate and cerium nitrate as active component precursors, adopting ultrasonic immersion and carrying out microwave roasting under the protection of nitrogen. The preparation method has the advantages of advanced process and accurate and complete data, the above product obtained in the invention is a black slice, the thickness of the slice is not greater than 1mm, each of the length and the width of the slice is not greater than 10mm, the surface of the active carbon fiber felts has -C=C, -OH and -C-O organic functional groups, and the active components are uniformly dispersed as nanoparticles, wherein the copper element exists as crystal Cu2O, metallic element Cu and amorphous CuO, a relative atom percentage ratio of Cu<2+> to low valence copper component is 42.1:57.9, cerium exists as Ce<3+> and Ce<4+>, and a relative atomic content ratio of Ce<3+> / Ce<4+> is 55.5 / 44.5.The cigarette filter additive has a good cigarette smoke filtering effect, and makes the NO removal rate reach 71.9% and the SO2 removal rate reach 60%.

Description

technical field [0001] The invention relates to a method for preparing a cigarette filter additive for removing NO, and belongs to the technical field of preparation and application of the cigarette filter additive. Background technique [0002] Cigarette smoke has complex components and contains a variety of harmful substances, including tar, nicotine, nitric oxide, carbon monoxide, formaldehyde, sulfur dioxide, etc. Among them, nitric oxide can destroy the balance of oxidation and anti-oxidation in the human body, and accelerate the process of oxidation and peroxidation in the body , causing damage to human organs, so it needs to be removed; the removal of nitric oxide in cigarette smoke can be done by adding appropriate additives to cigarette filters, mainly through two means of selective adsorption and selective catalytic reaction Selective adsorption mainly uses the special functional groups and special structures of bioactive additives, or the adsorption of activated c...

AI Technical Summary

Problems solved by technology

[0002] Cigarette smoke has complex components and contains a variety of harmful substances, including tar, nicotine, nitric oxide, carbon monoxide, formaldehyde, sulfur dioxide, etc. Among them, nitric oxide can destroy the balance of oxidation and anti-oxidation in the human body, and accelerate the process of oxidation and peroxidation in the body , causing damage to human organs, so it needs to be removed; the removal of nitric oxide in cigarette smoke can be done by adding appropriate additives to cigarette filters, mainly through two means of selective adsorption and selective catalytic reaction Selective adsorption mainly uses the special functional groups and special structures of bioactive additives, or the adsorption of activated carbon and zeolite with a large number of nanoporous structures and large specific surface areas; selective catalysis uses palladium, gold, platinum and other precious metals as catalysts active ingredients, but the cost is high and it is difficult to realize industrial production

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