CN108835709B - Modified molecular sieve additive for reducing CO release amount in smoke and preparation method and application thereof - Google Patents
Modified molecular sieve additive for reducing CO release amount in smoke and preparation method and application thereof Download PDFInfo
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- CN108835709B CN108835709B CN201810235756.2A CN201810235756A CN108835709B CN 108835709 B CN108835709 B CN 108835709B CN 201810235756 A CN201810235756 A CN 201810235756A CN 108835709 B CN108835709 B CN 108835709B
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- 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
- A24D3/02—Manufacture of tobacco smoke filters
- A24D3/0204—Preliminary operations before the filter rod forming process, e.g. crimping, blooming
- A24D3/0212—Applying additives to filter materials
- A24D3/0225—Applying additives to filter materials with solid additives, e.g. incorporation of a granular product
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- 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
- A24D3/061—Use of materials for tobacco smoke filters containing additives entrapped within capsules, sponge-like material or the like, for further release upon smoking
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
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- Cigarettes, Filters, And Manufacturing Of Filters (AREA)
Abstract
The invention relates to a modified molecular sieve additive for reducing CO release amount in smoke and a preparation method and application thereof, belonging to the technical field of cigarette harm reduction. The preparation method comprises the following steps of: 10-100, adding the polyvinylpyrrolidone compound into water, and stirring to dissolve the polyvinylpyrrolidone compound to obtain a PVP aqueous solution; adjusting PVP aqueous solution to a pH =4.0-5.5 value by using acid, adding silicate, reacting at room temperature for 1-4hr, adding a molecular sieve, stirring at room temperature for 30-60min, filtering, and drying filter residues to obtain the modified molecular sieve additive for reducing the CO release amount in smoke. The modified molecular sieve additive is simple to prepare and low in cost, can obviously reduce the CO release amount in smoke when added into a filter tip, has no obvious influence on the smoking taste of cigarettes, and has good application prospect.
Description
Technical Field
The invention belongs to the technical field of cigarette harm reduction, and particularly relates to a modified molecular sieve additive for reducing CO release amount in smoke and a preparation method thereof. The invention also relates to the application of the additive.
Background
In recent years, the international cigarette consumption market has changed due to the influence of the world health organization and the anti-smoking movement, and the consumers pay more attention to their health. In order to reduce the harm of tobacco products to consumers, the international tobacco industry has increased research strength in many fields including tobacco production, cigarette production process, tar and harm reducing technology and the like, and the international cigarette market also has a trend of accelerating the development of cigarettes with lower harmful components such as tar and low nicotine. In China, the tobacco industry faces multiple stresses of World Health Organization (WHO), World Trade Organization (WTO) and future tobacco control framework treaty, and the situation is very severe. The comprehensive reduction of tar and harmful components in cigarette smoke is a very important work in the tobacco industry, and the future and development of the tobacco industry are concerned.
Carbon monoxide (CO) is one of harmful substances in smoke, has the largest content and has great harm to human bodies. Once inhaled, the oxygen and the hemoglobin are combined, and once the carbon-oxygen hemoglobin is formed, the carbon-oxygen hemoglobin is not easy to separate, so that the normal oxygen carrying function of blood is disabled, the body is lack of oxygen, and hypoxia blood is caused, so that the tissue cells are hypoxic. However, carbon monoxide is a small molecular gas and exists in the gas phase part of the smoke, and the carbon monoxide is difficult to capture and eliminate by a common method, so that the research on a new technology for selectively reducing CO in the smoke of the cigarettes has very important practical significance.
Polyvinylpyrrolidone (PVP) has a molecular structure with strong polarity and amide groups which are easy to form hydrogen bonds, and the O atoms and N atoms in the molecule are typical coordination atoms which have the capability of forming complexes with certain metals, so that PVP can form solid complexes with a plurality of substances, particularly compounds containing hydroxyl, carboxyl, amino and active hydrogen atoms thereof.
However, the time for smoke to pass through the filter is very short, and the components in the smoke are mixed together and pass through the filter in the form of aerosol. In order to quickly and selectively reduce the CO content in the flue gas, after a soluble complex is formed by combining PVP and silicic acid, the surface of the molecular sieve is subjected to liquid phase adsorption modification, so that the contact area of the material and the flue gas is increased, and the adsorption efficiency and the adsorption capacity of the material to the CO in the flue gas are improved. Therefore, how to overcome the defects of the prior art is a problem which needs to be solved urgently in the technical field of cigarette harm reduction at present.
Disclosure of Invention
The invention aims to solve the defects of the prior art and provide a modified molecular sieve additive for reducing the release amount of CO in smoke and a preparation method and application thereof.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the preparation method of the modified molecular sieve additive for reducing the CO release amount in the smoke comprises the following steps:
according to the mass ratio of 1: 10-100, adding the polyvinylpyrrolidone compound into water, and stirring to dissolve the polyvinylpyrrolidone compound to obtain a PVP aqueous solution; adjusting PVP aqueous solution to pH 4.0-5.5 with acid, adding silicate, reacting at room temperature for 1-4hr, adding molecular sieve, stirring at room temperature for 30-60min, filtering, and drying the filter residue to obtain modified molecular sieve additive for reducing CO release in flue gas;
the polyvinylpyrrolidone compound is one or the combination of two of polyvinylpyrrolidone and vinylpyrrolidone-maleic acid copolymer;
the silicate is sodium silicate or potassium silicate;
the acid is acetic acid or hydrochloric acid;
the molecular sieve is a silicon-aluminum molecular sieve, a phosphorus-aluminum molecular sieve, clinoptilolite, erionite or chabazite;
the mass ratio of the silicate to the polyvinylpyrrolidone compounds is 1: 1-10;
the mass ratio of the molecular sieve to the water is 10-100: 1.
further, it is preferable that the molecular weight of the polyvinylpyrrolidone-based compound is 1000-1000000.
Further, it is preferable that the molecular weight of the polyvinylpyrrolidone-based compound is 5000-100000.
The invention also provides the modified molecular sieve additive for reducing the release amount of CO in the smoke, which is prepared by the preparation method of the modified molecular sieve additive for reducing the release amount of CO in the smoke.
The invention also provides application of the modified molecular sieve additive for reducing CO release amount in smoke as a filter tip additive.
Further, when the modified molecular sieve additive is used as a filter tip additive, the modified molecular sieve additive is added into the filter tip, and the addition amount of each filter tip is 10-100 mg.
Compared with the prior art, the invention has the beneficial effects that:
the modified molecular sieve additive is simple to prepare and low in cost, can obviously reduce the CO release amount in smoke when added into a filter tip, has no obvious influence on the smoking taste of cigarettes, and has good application prospect.
Detailed Description
The present invention will be described in further detail with reference to examples.
It will be appreciated by those skilled in the art that the following examples are illustrative of the invention only and should not be taken as limiting the scope of the invention. The examples do not specify particular techniques or conditions, and are performed according to the techniques or conditions described in the literature in the art or according to the product specifications. The materials or equipment used are not indicated by manufacturers, and all are conventional products available by purchase.
The percentage numbers represent percent by mass unless otherwise specified herein.
Example 1
Adding 1g of polyvinylpyrrolidone with the molecular weight of 1000000 into 100g of water, stirring to dissolve the polyvinylpyrrolidone into PVP aqueous solution, adjusting the pH value to 4.0 by using acetic acid, adding 1g of sodium silicate, reacting at room temperature for 1hr, adding 10g of silicon-aluminum molecular sieve, stirring at room temperature for 30min, filtering, and drying filter residues to obtain the modified molecular sieve additive for reducing the CO release amount in the smoke;
adding the modified molecular sieve additive into a cigarette filter tip according to the amount of 50mg per cigarette, and preparing the cigarette according to a conventional method. The prepared cigarette is subjected to smoke component analysis, meanwhile, a blank sample and a reference sample are set for comparison, wherein the blank sample is the cigarette without any material, the reference sample 1 is the cigarette with the same weight and molecular sieve directly added into a filter rod, and the results are shown in table 1:
TABLE 1 flue gas data measurement results
Example 2
Adding 10g of vinyl pyrrolidone-maleic acid copolymer with the molecular weight of 1000 into 100g of water, stirring to dissolve the copolymer into PVP aqueous solution, adjusting the pH value to 5.5 by using hydrochloric acid, adding 1g of potassium silicate, reacting for 4 hours at room temperature, adding 1g of phosphorus-aluminum molecular sieve, stirring for 60 minutes at room temperature, filtering, and drying filter residues to obtain the modified molecular sieve additive for reducing the CO release amount in smoke;
adding the modified molecular sieve additive into a cigarette filter tip according to the amount of 10mg per cigarette, and preparing the cigarette according to a conventional method. The prepared cigarettes are subjected to smoke component analysis, meanwhile, blank samples and reference samples are set for comparison, wherein the blank samples are cigarettes without any materials, the reference samples 2 are cigarettes directly added with the same weight of molecular sieves and entering the filter rods, and the results are shown in table 2:
table 2 flue gas data measurement results
Example 3
Adding 3g of polyvinylpyrrolidone with the molecular weight of 5000 and 3g of vinylpyrrolidone-maleic acid copolymer with the molecular weight of 100000 into 100g of water, stirring to dissolve the polyvinylpyrrolidone into PVP aqueous solution, adjusting the pH value to 5.0 by using hydrochloric acid, adding 3g of sodium silicate, reacting at room temperature for 1hr, adding 6g of clinoptilolite, stirring at room temperature for 30min, filtering, and drying filter residues to obtain the modified molecular sieve additive for reducing the CO release amount in the smoke;
adding the modified molecular sieve additive into a cigarette filter tip according to the amount of 100mg per cigarette, and preparing the cigarette according to a conventional method. The prepared cigarettes were subjected to smoke component analysis, and meanwhile, blank samples and control samples were set for comparison, wherein the blank samples were cigarettes without any material added, and the control sample 3 was a cigarette with the same weight directly added into the filter rod, and the results are shown in table 3:
TABLE 3 flue gas data measurement results
Example 4
Adding 8g of vinyl pyrrolidone-maleic acid copolymer with the molecular weight of 40000 into 100g of water, stirring to dissolve the copolymer into PVP aqueous solution, adjusting the pH value to 4.0 by using acetic acid, adding 3g of sodium silicate, reacting at room temperature for 3 hours, adding 3g of erionite, stirring at room temperature for 40min, filtering, and drying filter residues to obtain the modified molecular sieve additive for reducing the CO release amount in smoke;
adding the modified molecular sieve additive into a cigarette filter tip according to the amount of 70mg per cigarette, and preparing the cigarette according to a conventional method. The prepared cigarettes were subjected to smoke component analysis, and meanwhile, blank samples and control samples were set for comparison, wherein the blank samples were cigarettes without any material added, and the control sample 4 was a cigarette with the same weight directly added to a filter rod, and the results are shown in table 4:
table 4 flue gas data measurement results
Example 5
Adding 3g of polyvinylpyrrolidone with the molecular weight of 80000 into 100g of water, stirring to dissolve the polyvinylpyrrolidone into PVP aqueous solution, adjusting the pH value to 4.0 by using acetic acid, adding 3g of sodium silicate, reacting at room temperature for 1hr, adding 5g of chabazite, stirring at room temperature for 30min, filtering, and drying filter residues to obtain the modified molecular sieve additive for reducing the CO release amount in the smoke;
adding the modified molecular sieve additive into a cigarette filter tip according to the amount of 30mg per cigarette, and preparing the cigarette according to a conventional method. The prepared cigarettes were subjected to smoke component analysis, and meanwhile, blank samples and control samples were set for comparison, wherein the blank samples were cigarettes without any material added, and the control sample 4 was a cigarette with the same weight directly added to a filter rod, and the results are shown in table 5:
TABLE 5 flue gas data measurements
The comparison of the comparative example and the example shows that the modified molecular sieve additive for reducing the CO gas release amount obviously improves the CO adsorption effect.
In addition, the cigarettes prepared according to the conventional method were subjected to smoking evaluation, and compared with the blank cigarettes, and the smoking evaluation results are shown in table 6. Research shows that the addition of the modified molecular sieve additive has no obvious influence on the smoking taste of the cigarettes and improves the irritation.
TABLE 6 evaluation suction table
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. The preparation method of the modified molecular sieve additive for reducing the CO release amount in the smoke is characterized by comprising the following steps:
according to the mass ratio of 1: 10-100, adding the polyvinylpyrrolidone compound into water, and stirring to dissolve the polyvinylpyrrolidone compound to obtain a polyvinylpyrrolidone compound aqueous solution; adjusting the pH of the aqueous solution of the polyvinylpyrrolidone compounds to 4.0-5.5 with acid, adding silicate, reacting at room temperature for 1-4hr, adding molecular sieve, stirring at room temperature for 30-60min, filtering, and drying the filter residue to obtain the modified molecular sieve additive for reducing the CO release amount in the smoke;
the polyvinylpyrrolidone compound is one or the combination of two of polyvinylpyrrolidone and vinylpyrrolidone-maleic acid copolymer;
the silicate is sodium silicate or potassium silicate;
the acid is acetic acid or hydrochloric acid;
the molecular sieve is a silicon-aluminum molecular sieve, a phosphorus-aluminum molecular sieve, clinoptilolite, erionite or chabazite; the mass ratio of the silicate to the polyvinylpyrrolidone compounds is 1: 1-10;
the mass ratio of the molecular sieve to the water is 10-100: 1.
2. the method for preparing a modified molecular sieve additive for reducing CO release in flue gas as claimed in claim 1, wherein the molecular weight of the polyvinylpyrrolidone type compound is 1000-1000000.
3. The method for preparing a modified molecular sieve additive for reducing CO release in flue gas as claimed in claim 1, wherein the molecular weight of the polyvinylpyrrolidone type compound is 5000-100000.
4. The modified molecular sieve additive for reducing the CO release amount in the smoke, which is prepared by the preparation method of the modified molecular sieve additive for reducing the CO release amount in the smoke according to any one of claims 1 to 3.
5. Use of the modified molecular sieve additive for reducing CO emissions in smoke of claim 4 as a filter additive.
6. The use of the modified molecular sieve additive for reducing CO emission in smoke as a filter additive according to claim 5, wherein the modified molecular sieve additive is added into a filter, and the addition amount of each filter is 10-100 mg.
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| CN201810235756.2A CN108835709B (en) | 2018-03-21 | 2018-03-21 | Modified molecular sieve additive for reducing CO release amount in smoke and preparation method and application thereof |
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| CN110959908A (en) * | 2019-11-18 | 2020-04-07 | 湖北中烟工业有限责任公司 | Adsorbing material for cigarette filter stick |
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| US9114364B2 (en) * | 2012-12-19 | 2015-08-25 | Industrial Technology Research Institute | Hollow fibers having a winding channel |
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| CN103341347A (en) * | 2013-07-10 | 2013-10-09 | 江苏中烟工业有限责任公司 | Adsorbent for selectively reducing release amount of volatile carbonyl and phenol compounds in cigarette smoke and preparation method and application of adsorbent |
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