Graphene smoke adsorption material for reducing harmful ingredients in cigarette smoke as well as preparation method and application thereof

A technology for adsorbing materials and harmful components, applied in the field of graphene flue gas adsorbing materials and preparation thereof, can solve problems such as unfavorable suction, affecting suction resistance, phenol reduction rate needs to be improved, etc., and achieves simple and easy operation and low cost in the preparation process. Inexpensive, adjustable aperture effect

Active Publication Date: 2021-06-25
CHINA TOBACCO YUNNAN IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Obviously, the reduction rate of phenol needs to be improved
[0005] In addition, a small number of researchers have studied the adsorption of ammonia in cigarette smoke. In patent CN201410134481, the adsorption of ammonia can reach more than 30%, but the amount of material added in this patent is more than 40mg. Too much material will affect the suction resistance and is not conducive to suction

Method used

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  • Graphene smoke adsorption material for reducing harmful ingredients in cigarette smoke as well as preparation method and application thereof
  • Graphene smoke adsorption material for reducing harmful ingredients in cigarette smoke as well as preparation method and application thereof
  • Graphene smoke adsorption material for reducing harmful ingredients in cigarette smoke as well as preparation method and application thereof

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Experimental program
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Effect test

Embodiment 1

[0030] This embodiment is the preparation of graphene flue gas adsorption material sample 1, comprising the following steps:

[0031] (1) Add flake graphite into a single-necked flask equipped with a hydrochloric acid-hydrofluoric acid mixture (volume ratio of 1:0.5) and stir for 3 hours, separate solid from liquid, and obtain pretreated graphite after washing and drying. (100g / L) and potassium persulfate (100g / L) concentrated sulfuric acid to oxidize and dehydrate the pre-treated graphite, stir at 80°C for 6h, separate solid from liquid, and obtain pre-oxidized graphite after washing and drying. The mass ratio of sulfuric acid to pretreated graphite is 0.5:1; add preoxidized graphite, sodium nitrate, and potassium permanganate in sequence to concentrated sulfuric acid, and then place it in a water bath at 35°C for 9 hours, where concentrated sulfuric acid and preoxidized The mass ratio of graphite is 1:1, and the graphite of preoxidation: sodium nitrate: the mass ratio of pot...

Embodiment 2

[0037] This embodiment is the preparation of graphene flue gas adsorption material sample 2, comprising the following steps:

[0038] (1) Add flake graphite into a single-necked flask equipped with hydrochloric acid-hydrofluoric acid mixture (volume ratio 1:1) and stir for 4 hours, separate solid from liquid, and obtain pretreated graphite after washing and drying. (120g / L) and potassium persulfate (120g / L) concentrated sulfuric acid to oxidize and dehydrate the pretreated graphite, stir at 60°C for 6h, separate solid from liquid, and obtain preoxidized graphite after washing and drying. The mass ratio of sulfuric acid to pretreated graphite is 0.5:0.5; add preoxidized graphite, sodium nitrate, and potassium permanganate in sequence to concentrated sulfuric acid, and then place it in a water bath at 40°C for 8 hours, wherein concentrated sulfuric acid and preoxidized The mass ratio of graphite is 0.5:1, and the graphite of preoxidation: sodium nitrate: the mass ratio of potass...

Embodiment 3

[0044] Present embodiment is the preparation of a kind of graphene flue gas adsorption material sample 3, comprises the following steps:

[0045] (1) Add flake graphite into a single-necked flask equipped with hydrochloric acid-hydrofluoric acid mixture (volume ratio 1.5:1) and stir for 5 hours, separate solid from liquid, and obtain pretreated graphite after washing and drying. (150g / L) and potassium persulfate (150g / L) concentrated sulfuric acid to oxidize and dehydrate the pretreated graphite, stir at 50°C for 6h, separate solid from liquid, and obtain preoxidized graphite after washing and drying. The mass ratio of sulfuric acid to pretreated graphite is 1:0.5; add preoxidized graphite, sodium nitrate, and potassium permanganate in sequence to concentrated sulfuric acid, and then place it in a water bath at 50°C for 5 hours, where concentrated sulfuric acid and preoxidized The mass ratio of graphite is 0.5:0.75, and the graphite of preoxidation: sodium nitrate: the mass ra...

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Abstract

The invention discloses a graphene smoke adsorption material for reducing harmful ingredients in cigarette smoke and a preparation method and application thereof. The graphene smoke adsorption material is prepared by reducing graphene oxide through hydrazine hydrate, and the harmful ingredients in cigarettes can be reduced by adding the graphene smoke adsorption material into cigarette filters. The graphene smoke adsorption material has a good adsorption effect on benzo [a] pyrene, hydrogen cyanide, ammonia, crotonaldehyde, phenol and CO in smoke, the preparation method of the graphene smoke adsorption material is simple, the reaction conditions are mild, and the prepared adsorption material is large in specific surface area, has a stable regular hexagonal lattice structure, and is easy to form pi-pi interaction with phenolic compounds. In addition, the surface of the graphene smoke adsorption material prepared by the method has abundant chemical functional groups such as carboxyl and hydroxyl, and the graphene smoke adsorption material can form hydrogen bonds with phenolic compounds. When the graphene smoke adsorption material is used as a cigarette filter tip additive, harmful ingredients in smoke can be effectively reduced, and the tar reduction and harm reduction effects are outstanding.

Description

technical field [0001] The patent of the invention belongs to the technical field of cigarettes, and specifically relates to a graphene smoke adsorption material for reducing harmful components in cigarette smoke, and a preparation method and application thereof. Background technique [0002] Cigarette smoke is a mixture of extremely complex components produced by high-temperature combustion, cracking, distillation and other processes during the smoking process of tobacco products. Tobacco tar and harm reduction has always been the focus and hotspot of international tobacco research. [0003] At present, six major harmful substances recognized in the world, benzo[a]pyrene, hydrogen cyanide, ammonia, crotonaldehyde, phenol, and CO, have a greater impact on human health. Hydrogen cyanide is a kind of fiber toxin, which will affect human respiratory tract cells. When the human body ingests a certain amount of hydrogen cyanide, it will eventually cause death due to cell suffoca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/30A24D3/02
CPCB01J20/20A24D3/0225
Inventor 何沛杨文娟蒋丽红杨晨王亚明司晓喜刘春波张凤梅李振杰向能军刘志华
Owner CHINA TOBACCO YUNNAN IND
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