CN113287782A - Carboxylated carbon-based adsorbent for cigarette filter tip and preparation method and application thereof - Google Patents
Carboxylated carbon-based adsorbent for cigarette filter tip and preparation method and application thereof Download PDFInfo
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- CN113287782A CN113287782A CN202110139021.1A CN202110139021A CN113287782A CN 113287782 A CN113287782 A CN 113287782A CN 202110139021 A CN202110139021 A CN 202110139021A CN 113287782 A CN113287782 A CN 113287782A
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- Prior art keywords
- based adsorbent
- carbon
- carboxylated carbon
- adsorbent
- carboxylated
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 66
- 239000003463 adsorbent Substances 0.000 title claims abstract description 66
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 59
- 235000019504 cigarettes Nutrition 0.000 title claims abstract description 53
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 235000002637 Nicotiana tabacum Nutrition 0.000 claims abstract description 41
- 241000208125 Nicotiana Species 0.000 claims abstract description 40
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000002699 waste material Substances 0.000 claims abstract description 14
- 229910021529 ammonia Inorganic materials 0.000 claims abstract description 11
- 241000196324 Embryophyta Species 0.000 claims abstract description 9
- MLUCVPSAIODCQM-NSCUHMNNSA-N crotonaldehyde Chemical compound C\C=C\C=O MLUCVPSAIODCQM-NSCUHMNNSA-N 0.000 claims abstract description 9
- MLUCVPSAIODCQM-UHFFFAOYSA-N crotonaldehyde Natural products CC=CC=O MLUCVPSAIODCQM-UHFFFAOYSA-N 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims abstract description 8
- 239000003575 carbonaceous material Substances 0.000 claims abstract description 7
- 238000010000 carbonizing Methods 0.000 claims abstract description 6
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 claims description 30
- 239000000779 smoke Substances 0.000 claims description 22
- 239000007864 aqueous solution Substances 0.000 claims description 17
- 238000001132 ultrasonic dispersion Methods 0.000 claims description 16
- 239000000654 additive Substances 0.000 claims description 15
- 230000000996 additive effect Effects 0.000 claims description 15
- BMYNFMYTOJXKLE-UHFFFAOYSA-N 3-azaniumyl-2-hydroxypropanoate Chemical compound NCC(O)C(O)=O BMYNFMYTOJXKLE-UHFFFAOYSA-N 0.000 claims description 13
- 235000006408 oxalic acid Nutrition 0.000 claims description 10
- 238000001035 drying Methods 0.000 claims description 7
- 238000001914 filtration Methods 0.000 claims description 7
- 238000005406 washing Methods 0.000 claims description 7
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 4
- 239000012298 atmosphere Substances 0.000 claims description 4
- 239000001307 helium Substances 0.000 claims description 4
- 229910052734 helium Inorganic materials 0.000 claims description 4
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims description 4
- 239000011261 inert gas Substances 0.000 claims description 4
- 229910052786 argon Inorganic materials 0.000 claims description 2
- 239000003610 charcoal Substances 0.000 claims description 2
- 229910052757 nitrogen Inorganic materials 0.000 claims description 2
- 238000001179 sorption measurement Methods 0.000 abstract description 8
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 6
- 239000003546 flue gas Substances 0.000 abstract description 6
- 230000002378 acidificating effect Effects 0.000 abstract description 2
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 abstract description 2
- 230000021523 carboxylation Effects 0.000 abstract description 2
- 238000006473 carboxylation reaction Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract description 2
- 239000000758 substrate Substances 0.000 abstract description 2
- FLAQQSHRLBFIEZ-UHFFFAOYSA-N N-Methyl-N-nitroso-4-oxo-4-(3-pyridyl)butyl amine Chemical compound O=NN(C)CCCC(=O)C1=CC=CN=C1 FLAQQSHRLBFIEZ-UHFFFAOYSA-N 0.000 description 5
- 238000010998 test method Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 239000002041 carbon nanotube Substances 0.000 description 2
- 229910021393 carbon nanotube Inorganic materials 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 229910021389 graphene Inorganic materials 0.000 description 2
- 239000012299 nitrogen atmosphere Substances 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 230000000391 smoking effect Effects 0.000 description 2
- 238000000527 sonication Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 235000019505 tobacco product Nutrition 0.000 description 2
- 244000061176 Nicotiana tabacum Species 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- 239000002156 adsorbate Substances 0.000 description 1
- 239000012300 argon atmosphere Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012496 blank sample Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000009210 therapy by ultrasound Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
- A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
- A24D3/06—Use of materials for tobacco smoke filters
- A24D3/16—Use of materials for tobacco smoke filters of inorganic materials
- A24D3/163—Carbon
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
- A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
- A24D3/06—Use of materials for tobacco smoke filters
- A24D3/14—Use of materials for tobacco smoke filters of organic materials as additive
Abstract
The invention belongs to the field of adsorbents, and particularly relates to a carboxylated carbon-based adsorbent for a cigarette filter as well as a preparation method and application of the carboxylated carbon-based adsorbent. The carbon-based material in the carboxylated carbon-based adsorbent is a carbonized product of a plant carbon source. The invention creatively uses carbonized products obtained by directly carbonizing waste tobacco stems and tobacco stalks in the tobacco generation process as the adsorbent substrate, and then carboxylation is carried out to obtain the carboxylated carbon-based adsorbent. The carbonized product has the advantage of large specific surface area of the carbon material, and has high adsorption effect when used as an adsorbent. The carboxylated carbon-based adsorbent disclosed by the invention utilizes the acidic effect of carboxyl to generate an adsorption effect with alkaline substances, namely ammonia and NNK, in the flue gas, the selectivity reduction rate of ammonia in the flue gas can reach 18-30%, and the selectivity reduction rate of NNK (4-methylnitrosamine-1-3-pyridyl-1-butanone) in the flue gas can reach 17-31%. In addition, the invention unexpectedly discovers that the selectivity reduction rate of the carboxylated carbon-based adsorbent to the crotonaldehyde in the gas can reach 16-25%.
Description
Technical Field
The invention belongs to the field of adsorbents, and particularly relates to a carboxylated carbon-based adsorbent for a cigarette filter as well as a preparation method and application of the carboxylated carbon-based adsorbent.
Background
Along with the development of society, the requirements of cigarette groups on the safety of cigarette products are continuously improved. Therefore, the content of harmful ingredients in the cigarette smoke is reduced so as to reduce the harm of the cigarette to human bodies, and the cigarette smoke is a hot point of common attention of the tobacco industry and cigarette enterprises. The method is an effective harm reduction method by adsorbing harmful components in smoke through the adsorbent in the cigarette filter, but the difficulty of adsorbent screening is how to realize selective adsorption of different harmful components.
The carbon-based material has the advantages of wide source, low preparation cost, safety and the like, and can realize selective adsorption on different adsorbates through modification, so the carbon-based material has a good application prospect in the field of adsorption. For example, the polyethylene glycol modified graphene adsorbent has a specific adsorption effect on phenol by virtue of hydrogen bonding. However, most of the currently used adsorbents such as modified carbon nanotubes and modified graphene have the advantage of large specific surface area, but the raw material carbon nanotubes or graphene needs to be purchased, so that the cost is high, and the method does not meet the policy requirements of energy conservation and emission reduction.
Disclosure of Invention
The present invention is proposed in order to solve at least one of the above-mentioned problems.
The invention provides a carboxylated carbon-based adsorbent for a cigarette filter, wherein a carbon-based material in the carboxylated carbon-based adsorbent is a carbonized product of a plant carbon source.
Preferably, the plant carbon source is selected from at least one of waste tobacco stems, waste tobacco stems and waste tobacco leaves.
The second aspect of the invention provides a preparation method of a carboxylated carbon adsorbent for a cigarette filter, which comprises the following steps:
(1) smashing a plant carbon source, and carbonizing at 150-230 ℃ for 30-150 minutes in an inert gas atmosphere to obtain a carbonized product;
(2) and (3) putting the carbonized product into a hydrobromic acid aqueous solution with the mass concentration of 30-70%, performing ultrasonic dispersion at 15-55 ℃ for 3-5 h, adding an oxalic acid aqueous solution with the mass concentration of 2.5-12.5%, continuing performing ultrasonic dispersion for 3-5 h, and filtering, washing and drying after the ultrasonic dispersion to obtain a carboxylated product, namely the carboxylated carbon-based adsorbent.
Preferably, the plant charcoal source in step (1) is at least one selected from waste tobacco stems, waste tobacco stems and waste tobacco leaves, and the inert gas is at least one selected from nitrogen, helium and argon.
Preferably, the charging proportion of the carbonized product in the step (2) is 5g/1L of hydrobromic acid, and the charging amount of the oxalic acid aqueous solution is 10 percent of the volume of the hydrobromic acid aqueous solution.
The third aspect of the present invention provides an application of the carboxylated carbon based adsorbent for a cigarette filter according to any one of the first aspect of the present invention, wherein the carboxylated carbon based adsorbent is used as a cigarette filter additive, so that after smoke generated by a cigarette is adsorbed by the carboxylated carbon based adsorbent in the cigarette filter additive, the selectivity reduction rate of ammonia in the smoke can reach 18 to 30%, the selectivity reduction rate of NNK in the smoke can reach 17 to 31%, and the selectivity reduction rate of crotonaldehyde in the smoke can reach 16 to 25%.
The technical scheme can be freely combined on the premise of no contradiction.
The invention has the following beneficial effects:
1. the existing cigarette adsorbent material is directly prepared from exotic raw materials such as graphene, carbon nanotubes and the like, and the use of tobacco materials as adsorbent raw materials is not thought. The invention creatively uses carbonized products obtained by directly carbonizing waste tobacco stems and tobacco stalks in the tobacco generation process as the adsorbent substrate, and then carboxylation is carried out to obtain the carboxylated carbon-based adsorbent. The carbonized product has the advantage of large specific surface area of the carbon material, and has high adsorption effect when used as an adsorbent. The carboxylated carbon-based adsorbent disclosed by the invention utilizes the acidic effect of carboxyl to generate an adsorption effect with alkaline substances, namely ammonia and NNK, in the flue gas, the selectivity reduction rate of ammonia in the flue gas can reach 18-30%, and the selectivity reduction rate of NNK (4-methylnitrosamine-1-3-pyridyl-1-butanone) in the flue gas can reach 17-31%. In addition, the invention unexpectedly discovers that the selectivity reduction rate of the carboxylated carbon-based adsorbent to the crotonaldehyde in the gas can reach 16-25%.
2. Among downstream tobacco products, cigarettes have the highest added value. However, during the tobacco leaf picking and cigarette production processes, a great deal of waste exists in the tobacco stems and the tobacco stalks. Therefore, the method provided by the invention has an important significance for further improving the added value of tobacco by chemically utilizing the tobacco stems and tobacco stalks. The sources of the tobacco stems and the tobacco stalks are wide and definite, the adsorbent prepared by taking the tobacco stems and the tobacco stalks as the base materials has the advantages of simple preparation process, less energy consumption, low cost and the like, and the adsorbent can be used as the cigarette filter additive to further realize the diversified utilization of tobacco products and better promote the harm reduction effect.
Drawings
None.
Detailed Description
The present invention will be further described with reference to the following embodiments.
The tobacco stems and tobacco stalks used in the embodiment are derived from tobacco plants, and only cleaned and dried; the distilled water is self-made; hydrobromic acid and oxalic acid were analytically pure.
Example 1
The embodiment 1 provides a preparation method of a carboxylated carbon-based adsorbent for a cigarette filter, which specifically comprises the following steps:
(1) and (3) crushing the tobacco stems, putting the crushed tobacco stems into a tubular muffle furnace, and carbonizing the crushed tobacco stems for 30 minutes at 230 ℃ in a helium atmosphere to obtain a carbonized product.
(2) And (2) according to the proportion of 5g of carbonized product/L of hydrobromic acid aqueous solution, adding the carbonized product obtained in the step (1) into 70% hydrobromic acid aqueous solution, performing ultrasonic dispersion at 35 ℃ for 30min, adding 10% oxalic acid aqueous solution with the mass concentration of 10% by volume, continuing performing ultrasonic dispersion for 300min, and filtering, washing and drying after ultrasonic dispersion is completed to obtain the carboxylated carbon-based adsorbent.
The carboxylated carbon-based adsorbent prepared in the embodiment 1 is used as a cigarette filter additive for removing harmful components in mainstream smoke of cigarettes. Adding the prepared carboxylated carbon adsorbent into the middle part of a cigarette filter according to 10mg/cig smoke to serve as a test sample, comparing blank cigarettes without the carboxylated carbon adsorbent serving as blank samples, balancing for 48 hours under the conditions that the temperature is (22 +/-2) DEG C and the humidity is (66 +/-2) RH percent, performing simulated smoking on a smoking machine, trapping particulate matters through a rear-end Cambridge filter sheet, and determining the content of related components by using a near-infrared instrument. Each sample was subjected to 5 replicates (i.e., 5 cigarettes) and averaged, with the results given in table 1 below:
TABLE 1
As can be seen from table 1, the removal rates of ammonia, NNK and crotonaldehyde in smoke of the carboxylated carbon-based adsorbent prepared in this example 1 as an additive for cigarette filters reach 30.1%, 23.4% and 21.3%, respectively.
Example 2
The embodiment 2 provides a preparation method of a carboxylated carbon-based adsorbent for a cigarette filter, which specifically comprises the following steps:
(1) the tobacco stalks are smashed and then placed in a tubular muffle furnace to be carbonized for 120 minutes at 150 ℃ in the nitrogen atmosphere, so as to obtain a carbonized product.
(2) And (2) according to the proportion of 5g/L, putting the carbonized product into a hydrobromic acid aqueous solution with the mass concentration of 50%, performing ultrasonic dispersion at 25 ℃ for 120min, then adding an oxalic acid aqueous solution with the mass concentration of 7.5% in a volume of 10%, continuing performing ultrasonic treatment for 240min, and filtering, washing and drying after the ultrasonic dispersion is finished to obtain the carboxylated carbon-based adsorbent.
The carboxylated carbon adsorbent prepared in the embodiment 2 is used as a cigarette filter additive for removing harmful components in the mainstream smoke of cigarettes, the test procedures refer to the embodiment 1, and the results are shown in the following table 2:
TABLE 2
As shown in table 2, the removal rates of ammonia, NNK and crotonaldehyde in smoke of the carboxylated carbon-based adsorbent prepared in this example 2 as an additive of cigarette filters were 25.9%, 17.4% and 25.2%, respectively.
Example 3
The embodiment 3 provides a preparation method of a carboxylated carbon-based adsorbent for a cigarette filter, which specifically comprises the following steps:
(1) crushing the tobacco stalks, placing the crushed tobacco stalks in a tubular muffle furnace, and carbonizing the crushed tobacco stalks for 150 minutes at 170 ℃ in a helium atmosphere to obtain a carbonized product.
(2) And (2) according to the proportion of 5g/L, putting the carbonized product into a hydrobromic acid aqueous solution with the mass concentration of 30%, performing ultrasonic dispersion for 60min at 55 ℃, adding an oxalic acid aqueous solution with the mass concentration of 5% in a volume of 10%, continuing performing ultrasonic dispersion for 60min, and filtering, washing and drying after the ultrasonic dispersion is finished to obtain the carboxylated carbon-based adsorbent.
The carboxylated carbon adsorbent prepared in the embodiment 3 is used as a cigarette filter additive for removing harmful components in the mainstream smoke of cigarettes, the test procedures refer to the embodiment 1, and the results are shown in the following table 3:
TABLE 3
As shown in table 3, the removal rates of ammonia, NNK and crotonaldehyde in smoke of the carboxylated carbon adsorbent prepared in this example 3 as an additive of cigarette filters were 23.4%, 25.0% and 24.7%, respectively.
Example 4
The embodiment 4 provides a preparation method of a carboxylated carbon-based adsorbent for a cigarette filter, which specifically comprises the following steps:
(1) the tobacco stems are smashed and then placed in a tubular muffle furnace to be carbonized for 60 minutes at 190 ℃ in the nitrogen atmosphere, and carbonized products are obtained.
(2) According to the proportion of 5g/L, the carbonized product is added into hydrobromic acid with the mass concentration of 60 percent and is subjected to ultrasonic dispersion for 90min at the temperature of 45 ℃. Then, 10% by volume of an aqueous solution of oxalic acid having a mass concentration of 12.5% was added and the sonication was continued for 180 min. And filtering, washing and drying after the reaction is finished to obtain the carboxylated carbon-based adsorbent.
The carboxylated carbon adsorbent prepared in the embodiment 4 is used as a cigarette filter additive for removing harmful components in the mainstream smoke of cigarettes, the test procedures refer to the embodiment 1, and the results are shown in the following table 4:
TABLE 4
Table 4 shows that the removal rates of ammonia, NNK and crotonaldehyde in smoke of the carboxylated carbon adsorbent prepared in this example 4 as an additive of cigarette filter can reach 26.2%, 31.1% and 22.8%, respectively.
Example 5
The embodiment 5 provides a preparation method of a carboxylated carbon-based adsorbent for a cigarette filter, which specifically comprises the following steps:
(1) the tobacco stalks are smashed and then placed in a tubular muffle furnace to be carbonized for 90 minutes at 210 ℃ in the argon atmosphere, so as to obtain a carbonized product.
(2) According to the proportion of 5g/L, the carbonized product is added into hydrobromic acid with the mass concentration of 40 percent and is subjected to ultrasonic dispersion for 150min at the temperature of 15 ℃. Then, 10% by volume of an aqueous solution of oxalic acid having a mass concentration of 2.5% was added and sonication was continued for 120 min. And filtering, washing and drying after the reaction is finished to obtain the carboxylated carbon-based adsorbent.
The carboxylated carbon adsorbent prepared in the embodiment 5 is used as a cigarette filter additive for removing harmful components in the mainstream smoke of cigarettes, the test procedures are referred to the embodiment 1, and the results are shown in the following table 5:
TABLE 5
As shown in table 4, the removal rates of ammonia, NNK and crotonaldehyde in smoke of the carboxylated carbon adsorbent prepared in this example 4 as an additive of cigarette filters reach 17.6%, 20.9% and 16.3%, respectively.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (6)
1. The carboxylated carbon-based adsorbent for the cigarette filter is characterized in that a carbon-based material in the carboxylated carbon-based adsorbent is a carbonized product of a plant carbon source.
2. The carboxylated carbon-based adsorbent for cigarette filters according to claim 1, wherein said plant carbon source is selected from at least one of waste tobacco stems, and waste tobacco leaves.
3. A preparation method of a carboxylated carbon-based adsorbent for cigarette filters is characterized by comprising the following steps:
(1) smashing a plant carbon source, and carbonizing at 150-230 ℃ for 30-150 minutes in an inert gas atmosphere to obtain a carbonized product;
(2) and (3) putting the carbonized product into a hydrobromic acid aqueous solution with the mass concentration of 30-70%, performing ultrasonic dispersion at 15-55 ℃ for 3-5 h, adding an oxalic acid aqueous solution with the mass concentration of 2.5-12.5%, continuing performing ultrasonic dispersion for 3-5 h, and filtering, washing and drying after the ultrasonic dispersion to obtain a carboxylated product, namely the carboxylated carbon-based adsorbent.
4. The method for preparing a carboxylated carbon-based adsorbent for cigarette filters according to claim 3, characterized in that: in the step (1), the plant charcoal source is at least one selected from waste tobacco stems, waste tobacco stems and waste tobacco leaves, and the inert gas is at least one selected from nitrogen, helium and argon.
5. The method for preparing a carboxylated carbon based adsorbent for cigarette filters according to claim 3, wherein the feeding ratio of the carbonized product in the step (2) is 5g/1L hydrobromic acid, and the feeding amount of the oxalic acid aqueous solution is 10% of the volume of the hydrobromic acid aqueous solution.
6. The application of the carboxylated carbon based adsorbent for the cigarette filter according to any one of claims 1 to 2, wherein the carboxylated carbon based adsorbent according to any one of claims 1 to 2 is used as an additive of the cigarette filter, so that after the smoke generated by the cigarette is adsorbed by the carboxylated carbon based adsorbent in the additive of the cigarette filter, the selectivity reduction rate of ammonia in the smoke can reach 18 to 30%, the selectivity reduction rate of NNK in the smoke can reach 17 to 31%, and the selectivity reduction rate of crotonaldehyde in the smoke can reach 16 to 25%.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110139021.1A CN113287782A (en) | 2021-02-01 | 2021-02-01 | Carboxylated carbon-based adsorbent for cigarette filter tip and preparation method and application thereof |
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|---|---|---|---|
| CN202110139021.1A CN113287782A (en) | 2021-02-01 | 2021-02-01 | Carboxylated carbon-based adsorbent for cigarette filter tip and preparation method and application thereof |
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| CN110961077A (en) * | 2019-11-12 | 2020-04-07 | 云南中烟工业有限责任公司 | Preparation method of titanium dioxide activated carbon composite adsorbent for cigarette filter |
-
2021
- 2021-02-01 CN CN202110139021.1A patent/CN113287782A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070295347A1 (en) * | 2006-02-22 | 2007-12-27 | Philip Morris Usa Inc. | Surface-modified porous substrates |
| CN103393219A (en) * | 2013-08-14 | 2013-11-20 | 中国烟草总公司郑州烟草研究院 | Modified natural plant filter tip additive material capable of selectively reducing burst size of hydrogen cyanide in main stream smoke of cigarettes and preparation method of modified natural plant filter tip additive material |
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Application publication date: 20210824 |