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Organic-inorganic composite aerogel for reducing phenolic ketone harmful substances in mainstream smoke as well as preparation and application of organic-inorganic composite aerogel

An inorganic compound, mainstream smoke technology, applied in the fields of application, inorganic chemistry, tobacco, etc., can solve the problem of unsatisfactory universal harm reduction effect of harm reduction methods, and achieve the effect of improving harm reduction effect

Pending Publication Date: 2022-04-12
CHINA TOBACCO HUNAN INDAL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the technical deficiencies of the universality of harm reduction means of phenolic ketone harmful substances in mainstream smoke and the unsatisfactory harm reduction effect, the first purpose of the present invention is to provide an organic method for reducing phenolic ketone harmful substances in mainstream smoke. - Inorganic composite airgel (this application is also referred to as organic-inorganic composite aerogel or composite aerogel), which is a cigarette additive material that can effectively improve the harmful substances of phenolics and ketones

Method used

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  • Organic-inorganic composite aerogel for reducing phenolic ketone harmful substances in mainstream smoke as well as preparation and application of organic-inorganic composite aerogel
  • Organic-inorganic composite aerogel for reducing phenolic ketone harmful substances in mainstream smoke as well as preparation and application of organic-inorganic composite aerogel
  • Organic-inorganic composite aerogel for reducing phenolic ketone harmful substances in mainstream smoke as well as preparation and application of organic-inorganic composite aerogel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] First prepare silica airgel by sol-gel method: take tetraethyl orthosilicate as raw material, press ethyl orthosilicate: water: the volume ratio of alcohol is 1:4.2:8, add water and ethanol, will The mixed solution of the three was stirred for 12 hours, then the pH was adjusted to 3.2 with 1mol / L oxalic acid solution, and the mixed solution was left to stand at room temperature for several days (3-5 days) to fully hydrolyze the ethyl silicate in the mixed solution. Add ammonia solution to control the pH to 7.2 to obtain a silica hydrosol. The obtained silica hydrosol is left to stand at room temperature until a gel is formed. The gel is aged at room temperature for 3 days, and the aged gel is placed in n-hexane Soak in medium, replace the n-hexane once every 12 hours to extract the water and ethanol in the wet gel, and finally remove the n-hexane on the surface of the obtained gel, and use the normal pressure drying technology to dry the gel to obtain carbon dioxide Sil...

Embodiment 2

[0065] Compared with Example 1, the main difference is that the composite airgel prepared in Example 1 is used for the analysis of the removal rate of harmful components of aldehydes in mainstream smoke, specifically:

[0066] First prepare silica airgel by sol-gel method: take tetraethyl orthosilicate as raw material, press ethyl orthosilicate: water: the volume ratio of alcohol is 1:4.2:8, add water and ethanol, will The mixed solution of the three was stirred for 12 hours, then 1mol / L oxalic acid solution was used to adjust the pH to 3.2, and the mixed solution was left to stand at room temperature for several days to fully hydrolyze the ethyl silicate in the mixed solution, and the ammonia solution was slowly added to control the pH under constant stirring. Obtain silica hydrosol for 7.2, the gained silica hydrosol is allowed to stand at room temperature until a gel is formed, the gel is aged at room temperature for 3 days, the aged gel is soaked in n-hexane, every The n-h...

Embodiment 3

[0070] First prepare silica airgel by sol-gel method: take tetraethyl orthosilicate as raw material, press ethyl orthosilicate: water: the volume ratio of alcohol is 1:4.2:8, add water and ethanol, will The mixed solution of the three was stirred for 12 hours, then 1mol / L oxalic acid solution was used to adjust the pH to 3.2, and the mixed solution was left to stand at room temperature for several days to fully hydrolyze the ethyl silicate in the mixed solution, and the ammonia solution was slowly added to control the pH under constant stirring. Obtain silica hydrosol for 7.2, the gained silica hydrosol is allowed to stand at room temperature until a gel is formed, the gel is aged at room temperature for 3 days, the aged gel is soaked in n-hexane, every The n-hexane is replaced once every 12 hours to extract the water and ethanol in the wet gel, and finally the n-hexane on the surface of the obtained gel is removed, and the gel is dried by normal pressure drying technology to o...

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Abstract

The invention belongs to the technical field of tobacco harm reduction, and particularly discloses organic-inorganic composite aerogel for reducing phenolic ketone harmful substances in mainstream smoke, which is characterized by comprising silicon dioxide aerogel and an organic matter layer compounded on the surface of a framework of the silicon dioxide aerogel, the organic matter is a compound with a structural formula as shown in a formula 1 or a metal coordination compound of the compound; and R1-R4 are independently H, C1-C6 alkane, phenyl or substituted phenyl. The invention further discloses a preparation method of the composite aerogel and an application method of the composite aerogel in cigarettes. The research finds that the adsorption and degradation effects on harmful substances such as phenols, aldehydes and ketones in mainstream smoke can be accidentally improved based on the synergism of the material components and the occurrence structure of the material.

Description

technical field [0001] The invention belongs to the technical field of adsorbent materials, and in particular relates to a preparation method of an adsorbent for degrading harmful substances of phenolic ketones in cigarettes. Background technique [0002] Smoking has strong damage to the human body's respiratory, gastrointestinal, cardiovascular, nervous system, liver and other organs. Long-term smoking may cause many diseases such as lung cancer. With the tobacco control movement actively responded by the public, the product development and promotion of low-harm cigarettes have attracted more and more attention. Various components in cigarette smoke mainly come from thermal decomposition, thermal synthesis, dry distillation, polymerization, condensation and other reactions in the process of cutting tobacco combustion. Technical research on specific harmful components such as aldehydes, nitrosamines, ammonia, and free radicals is also emerging. Generally speaking, the harm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/22B01J20/28B01J20/30B01D53/02A24D3/04A24D3/10
Inventor 胡念念范湘红肖启振戴云辉彭圣明夏平宇
Owner CHINA TOBACCO HUNAN INDAL CORP
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