Functional geopolymeric materials capable of reducing hydrocyanic acid in cigarette smoke and application thereof

Abstract

The invention belongs to the technical field of reduction of harm of tobaccos and lowering of tars, and particularly discloses functional geopolymeric materials capable of reducing hydrocyanic acid incigarette smoke and application thereof. The functional geopolymeric materials are geopolymer loaded with chitosan and metal ions; and a geopolymer composite substrate is synthesized by using the chitosan, sodium hydroxide, sodium silicate and nano-clay, and the functional geopolymeric materials are obtained by dipping the geopolymer composite substrate with metal ion solutions. The synthesizingprocess is simple, the cost is low, the metal ions and the chitosan are loaded firmly on the geopolymer, the stability is high, and the activity is high. The functional geopolymeric materials disclosed by the invention are high in selectivity and high in absorption ratio; and the functional geopolymeric materials are added in a cigarette filter, so that the release capacity of the hydrocyanic acidin the cigarette smoke can be effectively reduced, and the smoking quality of the cigarettes cannot be influenced.

Description

technical field [0001] The invention belongs to the technical field of cigarette harm reduction and tar reduction, and in particular relates to a functional geopolymer material for reducing hydrocyanic acid in cigarette smoke and an application thereof. Background technique [0002] Hydrocyanic acid (HCN) is a highly volatile Class A highly toxic substance. After inhalation, it combines with ferric cytochrome oxidase in the body to become cyanide ferric cytochrome oxidase, loses the function of transferring oxygen, and causes tissue Oxygen deficiency and poisoning are extremely harmful to the human body. Hydrocyanic acid is a major harmful substance in cigarette smoke, which is mainly produced by the cracking of amino acids and related compounds at 700-1000°C, and the content in smoke is about 30-300 μg / cigarette. Improving the safety of smoking cigarettes and reducing the release of hydrocyanic acid in cigarettes is an important direction of current tobacco research and an...

AI Technical Summary

Problems solved by technology

Among them, the catalytic oxidation temperature of the catalytic oxidation method is relatively high (such as patents CN1416950A and CN1462652A, the catalytic temperature requires 250-450°C), and harmful gaseous products may be generated, which cannot be applied to the removal of hydrocyanic acid in cigarette smoke; the dilution method It will cause a large loss of cigarette aroma and affect the quality of smoking; the adsorption method has become the most common method at home and abroad to reduce the release of hydrogen cyanide in mainstream cigarette smoke due to its convenient application

[0004] In the research on the removal of hydrocyanic acid in flue gas by adsorption method, the research on activated carbon is more in-depth. Activated carbon has good adsorption, but poor selectivity. It will reduce the smoking quality of cigarettes while adsorbing the gas phase components of flue gas, which has great limitations. Although the existing technology supports the active components capable of selectively adsorbing hydrocyanic acid by loading activated carbon, it cannot effectively solve the above problems

For example: Patent CN103030141A discloses a method for preparing a modified carbon material that selectively reduces the release of hydrocyanic acid in flue gas. By soaking activated carbon in copper sulfate solution, the surface is loaded with copper ions, and the copper ions are selectively adsorbed. For hydrocyanic acid in flue gas, this method has some effect, but the loading effect of copper ions is not good, the loading capacity is small, and the stability is poor, so the adsorption rate for hydrocyanic acid is not high, and the activated carbon itself has carbon The taste has not been eliminated, and the quality of smoking is difficult to improve

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