Air purification carbon package for electronic cigarette and preparation method thereof

Abstract

The application relates to an air purification carbon package for an electronic cigarette and a preparation method thereof, and belongs to the air purification field. The air purification carbon package for the electronic cigarette comprises activated carbon and a hydrogen donor-hydrogen acceptor type deep eutectic solvent (DES) loaded on the activated carbon; the hydrogen donor is a polyhydric alcohol and / or proline; and the hydrogen acceptor is one or any combination of choline chloride, betaine, L-glutamate, lactic acid and malic acid. The air purification carbon package for the electronic cigarette utilizes the activated carbon as a porous material, the DES is loaded on the porous material, the problems of large viscosity and large gas diffusion resistance of the DES can be solved, the use amount can be reduced, and the cost can be reduced. Moreover, the low eutectic solvent has excellent adsorption capacity for nicotine, glycerol and propylene glycol in "second-hand smoke" generated by the electronic cigarette, which combines the superior adsorption capacity of the low eutectic solvent for polar compounds and the large specific surface area of the activated carbon, so that the air purification effect is achieved.

Description

Technical Field

[0001] This invention relates to an air-purifying charcoal pack for electronic cigarettes and its preparation method, belonging to the field of air purification. Background Technology

[0002] In recent years, the global e-cigarette market has developed rapidly and expanded continuously, with sales increasing rapidly. E-cigarettes differ from traditional cigarettes in their usage; the resulting ambient smoke originates solely from the smoker's exhaled vapor. Compared to cigarette smoke, e-cigarette smoke contains significantly lower levels of air pollutants such as PM2.5, PM10, VOCs, CO, nitrogen oxides, and formaldehyde, but it does produce new air pollutants such as glycerol and propylene glycol. Existing literature indicates that glycerol and propylene glycol can affect glucose uptake and metabolism in human airway epithelial cells, leading to airway damage. Therefore, the health risks of e-cigarette "secondhand smoke" have received widespread attention.

[0003] Activated carbon bags utilize the microporous structure and large specific surface area of ​​activated carbon to adsorb harmful components in the air, such as formaldehyde, and are commonly used for home air purification. E-cigarette users typically use e-cigarettes in private spaces such as homes. To reduce the harm of "secondhand smoke" from e-cigarettes to those around them, activated carbon bags can be used to purify indoor air. However, e-cigarette "secondhand smoke" contains high levels of glycerol and propylene glycol, and currently there are no dedicated air-purifying activated carbon bags for e-cigarettes on the market.

[0004] Deuterated eutectic solvents (DES) are ionic liquid analogs synthesized from hydrogen bond acceptors and hydrogen bond donors in a specific ratio, exhibiting liquid properties at room temperature. Literature reports indicate that DES can efficiently adsorb harmful gases such as HCl, SO2, NO2, and CO2, and is widely used in the field of green and efficient absorption of industrial waste gases. Summary of the Invention

[0005] The purpose of this invention is to provide an air-purifying charcoal pack for electronic cigarettes, which solves the problem of high propylene glycol and glycerol content in electronic cigarette smoke in the prior art.

[0006] The second objective of this invention is to provide a method for preparing an air-purifying charcoal pack for electronic cigarettes, which is simple to operate and has low cost.

[0007] To achieve the above objectives, the technical solution adopted by the air-purifying charcoal bag for electronic cigarettes of the present invention is as follows:

[0008] An air-purifying carbon pack for electronic cigarettes includes activated carbon and a hydrogen donor-acceptor type low eutectic solvent (DES) supported on the activated carbon;

[0009] The hydrogen donor is a polyol and / or proline;

[0010] The hydrogen acceptor is one or any combination of choline chloride, betaine, L-glutamate, lactic acid, and malic acid.

[0011] The air-purifying carbon pack for electronic cigarettes of the present invention includes activated carbon and a eutectic solvent (DES) loaded on the activated carbon. By using activated carbon as a porous material and loading DES on the porous material, not only can the problems of high viscosity and high gas diffusion resistance be solved, but the amount used can also be reduced and the cost reduced. The hydrogen acceptor of the eutectic solvent is one or any combination of choline chloride, betaine, L-glutamate, lactic acid, and malic acid. When the hydrogen acceptor is choline chloride, the polyol and choline chloride can form a eutectic solvent in a wide range of proportions, thereby absorbing propylene glycol and glycerol in e-cigarette "secondhand smoke". When the hydrogen acceptor is betaine, L-glutamate, lactic acid, or malic acid, glycerol and propylene glycol in e-cigarette "secondhand smoke" can also act as hydrogen bond donors, reacting with the hydrogen acceptor in the eutectic solvent to form a eutectic solvent, thereby purifying propylene glycol and glycerol in e-cigarette "secondhand smoke". Therefore, the eutectic solvent of the present invention has excellent adsorption capacity for nicotine, glycerol, and propylene glycol in e-cigarette "secondhand smoke". This combines the superior adsorption capacity of eutectic solvent for polar compounds with the advantages of large specific surface area of ​​activated carbon, thereby achieving the effect of purifying air.

[0012] To better adsorb propylene glycol and glycerol, preferably, the molar ratio of the hydrogen donor to the hydrogen acceptor is 1-2:1-3.

[0013] Preferably, the polyol is one or any combination of propylene glycol, glycerol, glucose, sorbitol, and sucrose.

[0014] The technical solution adopted in the preparation method of the air-purifying charcoal pack for electronic cigarettes of the present invention is as follows:

[0015] A method for preparing an air-purifying charcoal pack for electronic cigarettes includes the following steps:

[0016] (1) The hydrogen donor and the hydrogen acceptor are mixed and heated to obtain a hydrogen donor-hydrogen acceptor type low co-solubility solvent;

[0017] (2) Dissolve the hydrogen donor-acceptor type low eutectic solvent in the solvent, then mix the activated carbon powder with the low eutectic solvent, separate the solid and liquid, and dry the solid material to obtain hydrogen donor-acceptor type low eutectic solvent-supported activated carbon.

[0018] (3) Hydrogen donor-hydrogen acceptor type low co-solubility solvent loaded activated carbon is placed in a bag to make a carbon bag, and an air purification carbon bag for electronic cigarettes is obtained.

[0019] The hydrogen donor is a polyol and / or proline;

[0020] The hydrogen acceptor is one or any combination of choline chloride, betaine, L-glutamate, lactic acid, and malic acid.

[0021] This invention utilizes a hydrogen donor-acceptor type low eutectic solvent, which is not only environmentally friendly and inexpensive, but also effectively adsorbs "secondhand smoke" from e-cigarettes. Activated carbon has a porous structure, and the low eutectic solvent is loaded into the pores of the activated carbon to prepare a carbon pack. This solves the current problem of the lack of dedicated air-purifying carbon packs for "secondhand smoke" from e-cigarettes. Moreover, the manufacturing process is simple and has good prospects for industrial application.

[0022] To better integrate the eutectic solvent with the activated carbon, preferably, the mass ratio of the hydrogen donor-acceptor type eutectic solvent to the activated carbon in step (2) is 0.05–0.5:1. More preferably, it is 0.1–0.3:1.

[0023] To enable the hydrogen donor and acceptor to mix better and faster to form DES, preferably, the heating in step (1) is water bath heating at a temperature of 50–100°C. More preferably, it is 80–100°C.

[0024] To ensure the formation of hydrogen donor-acceptor type DES, heating is required to obtain a transparent liquid. Preferably, the heating time is 20–60 minutes, more preferably 20–30 minutes. Stirring can be performed during heating to promote the formation of hydrogen donor-acceptor type DES.

[0025] To obtain dry solid adsorbent material for easy fabrication of charcoal bags, the drying temperature in step (2) is preferably 90–100°C. More preferably, it is 100°C.

[0026] To ensure thorough drying, the drying time is preferably 16 to 24 hours. Detailed Implementation

[0027] A method for preparing an air-purifying charcoal pack for electronic cigarettes includes the following steps:

[0028] (1) The hydrogen donor and the hydrogen acceptor are mixed and heated to obtain a hydrogen donor-hydrogen acceptor type low co-solubility solvent;

[0029] (2) Dissolve the hydrogen donor-acceptor type low eutectic solvent in the solvent, then mix the activated carbon powder with the low eutectic solvent, separate the solid and liquid, and dry the solid material to obtain hydrogen donor-acceptor type low eutectic solvent-supported activated carbon.

[0030] (3) The activated carbon loaded with hydrogen donor-acceptor type low co-solution solvent is placed in the bag to make a carbon bag, and the air purification carbon bag for electronic cigarettes is obtained.

[0031] Furthermore, the solvent in step (2) is ethanol.

[0032] Furthermore, the volume-to-mass ratio of the ethanol to the hydrogen donor-acceptor type DES is (50-100) ml:(1-3) g.

[0033] Furthermore, the mixing in step (2) is carried out under vacuum conditions. Vacuum conditions create negative pressure, which facilitates the loading of the eutectic solvent into the pores of the activated carbon.

[0034] Furthermore, the mixing time is 16–24 hours.

[0035] Furthermore, the material of the bag body is any one of breathable materials such as cotton, linen, or non-woven fabric.

[0036] The technical solution of the present invention will be further described below with reference to specific embodiments.

[0037] I. Specific embodiments of the air-purifying charcoal pack for electronic cigarettes of the present invention are as follows:

[0038] Example 1

[0039] The air-purifying carbon pack for electronic cigarettes in this embodiment includes activated carbon and glycerol-ChCl type DES loaded on the activated carbon; wherein the molar ratio of glycerol to choline chloride (ChCl) is 2:1.

[0040] Example 2

[0041] The air-purifying carbon pack for electronic cigarettes in this embodiment includes activated carbon and propylene glycol-ChCl type DES loaded on the activated carbon; wherein the molar ratio of propylene glycol to choline chloride (ChCl) is 2:1.

[0042] Example 3

[0043] The air-purifying carbon pack for electronic cigarettes in this embodiment includes activated carbon and D / L-proline-lactic acid type DES loaded on the activated carbon; wherein the molar ratio of D / L-proline to lactic acid is 1:1.

[0044] Example 4

[0045] The air-purifying charcoal pack for electronic cigarettes in this embodiment includes activated carbon and sorbitol-betaine type DES loaded on the activated carbon; wherein the molar ratio of sorbitol to betaine is 2:1.

[0046] Example 5

[0047] The air-purifying carbon pack for electronic cigarettes in this embodiment includes activated carbon and glucose-L-glutamate type DES loaded on the activated carbon; wherein the molar ratio of sorbitol and betaine is 1:3.

[0048] Example 6

[0049] The air-purifying charcoal pack for electronic cigarettes in this embodiment includes activated carbon and sucrose-malic acid type DES loaded on the activated carbon; wherein the molar ratio of sorbitol and betaine is 2:1.

[0050] II. Specific embodiments of the preparation method of the air-purifying charcoal pack for electronic cigarettes of the present invention are as follows:

[0051] Example 7

[0052] This embodiment describes the preparation method of the air-purifying charcoal pack for electronic cigarettes in Example 1, and includes the following steps:

[0053] (1) Synthesis of glycerol-ChCl type DES: Glycerol and ChCl were mixed in a molar ratio of 2:1, heated in a water bath at 90°C, and stirred for 30 min until a transparent liquid was formed.

[0054] (2) Glycerol-ChCl type DES supported activated carbon: Add 50 mL of ethanol to a three-necked round bottom flask, add 1 g of glycerol-ChCl type DES, stir to dissolve, then add 10 g of activated carbon powder, stir under vacuum for 16 h, then filter the resulting mixture, and dry the solid adsorbent material in a vacuum drying oven at 100 °C for 24 h to obtain glycerol-ChCl type DES supported activated carbon.

[0055] (3) Air purification carbon pack for electronic cigarettes: The obtained glycerol-ChCl type DES-supported activated carbon composite material is put into a burlap bag to make a carbon pack, which is the air purification carbon pack for electronic cigarettes.

[0056] Example 8

[0057] This embodiment describes the preparation method of the air-purifying charcoal pack for electronic cigarettes in Example 2, and includes the following steps:

[0058] (1) Synthesis of propylene glycol-ChCl type DES: propylene glycol and choline chloride were mixed at a molar ratio of 2:1, heated in a water bath at 100°C, and stirred for 20 min to obtain a transparent liquid.

[0059] (2) Propylene glycol-ChCl type DES supported activated carbon: Add 100 mL of ethanol to a three-necked round bottom flask, add 3 g of glycerol-ChCl type DES, stir to dissolve, then add 10 g of activated carbon powder, stir under vacuum for 20 h, then filter the resulting mixture, and dry the solid adsorbent material in a vacuum drying oven at 100 °C for 16 h to obtain propylene glycol-ChCl type DES supported activated carbon.

[0060] (3) Air purification carbon pack for electronic cigarettes: The obtained propylene glycol-ChCl type DES-supported activated carbon composite material is put into a burlap bag to make a carbon pack, which is the air purification carbon pack for electronic cigarettes.

[0061] Example 9

[0062] This embodiment describes the preparation method of the air-purifying charcoal pack for electronic cigarettes in Example 3, and includes the following steps:

[0063] (1) Synthesis of D / L-proline-lactic acid type DES: D / L-proline racemic mixture and lactic acid were mixed at a molar ratio of 1:1, heated in a water bath at 90°C, and stirred for 20 min until a transparent liquid was formed.

[0064] (2) D / L-proline-lactic acid type DES supported activated carbon: Add 50 mL of ethanol to a three-necked round bottom flask, add 2 g of D / L-proline-lactic acid type DES, stir to dissolve, then add 10 g of activated carbon powder, stir under vacuum for 24 h, then filter the resulting mixture, and dry the obtained solid adsorbent material in a vacuum drying oven at 100 °C for 24 h to obtain D / L-proline-lactic acid type DES supported activated carbon.

[0065] (3) Air purification carbon pack for electronic cigarettes: The D / L-proline-lactic acid type DES-supported activated carbon composite material obtained in step (2) is put into a burlap bag to make a carbon pack, which is the air purification carbon pack for electronic cigarettes.

[0066] Example 10

[0067] This embodiment describes the preparation method of the air-purifying charcoal pack for electronic cigarettes in Example 4, and includes the following steps:

[0068] (1) Synthesis of sorbitol-betaine type DES: Sorbitol and betaine were mixed in a molar ratio of 2:1, heated in a water bath at 80°C, and stirred for 30 minutes to obtain a transparent liquid.

[0069] (2) Sorbitol-betaine type DES supported activated carbon: 100 mL of ethanol was added to a three-necked round bottom flask, 3 g of sorbitol-betaine type DES was added, and after stirring to dissolve, 10 g of activated carbon powder was added. The mixture was stirred under vacuum for 16 h, and the resulting mixture was filtered. The solid adsorbent material was dried in a vacuum drying oven at 100 °C for 16 h to obtain sorbitol-betaine type DES supported activated carbon.

[0070] (3) Air purifying carbon pack for electronic cigarettes: The sorbitol-betaine type DES-supported activated carbon composite material obtained in step (2) is put into a burlap bag to make a carbon pack, which is the air purifying carbon pack for electronic cigarettes.

[0071] In other embodiments, sorbitol can be replaced with glucose or sucrose, and betaine can be replaced with L-glutamate or malic acid.

[0072] Example 11

[0073] This embodiment describes the preparation method of the air-purifying charcoal pack for electronic cigarettes as described in Example 5, and includes the following steps:

[0074] (1) Synthesis of glucose-L-glutamate type DES: Glucose and L-glutamate were mixed in a molar ratio of 1:3, heated in a water bath at 50°C, and stirred for 60 min to obtain a transparent liquid.

[0075] (2) Glucose-L-glutamate type DES supported activated carbon: 100 mL of ethanol was added to a three-necked round bottom flask, 3 g of sorbitol-betaine type DES was added, and after stirring to dissolve, 60 g of activated carbon powder was added. The mixture was stirred under vacuum for 24 h, and the resulting mixture was filtered. The solid adsorbent material was dried in a vacuum drying oven at 90 °C for 16 h to obtain glucose-L-glutamate type DES supported activated carbon.

[0076] (3) Air purification charcoal bag for electronic cigarettes: The glucose-L-glutamate type DES-supported activated carbon composite material obtained in step (2) is put into a burlap bag to make a charcoal bag, which is the air purification charcoal bag for electronic cigarettes.

[0077] Example 12

[0078] This embodiment describes the preparation method of the air-purifying charcoal pack for electronic cigarettes as described in Example 6, and includes the following steps:

[0079] (1) Synthesis of sucrose-malic acid type DES: Sucrose and malic acid were mixed in a molar ratio of 2:1, heated in a water bath at 60°C, and stirred for 45 minutes to obtain a transparent liquid.

[0080] (2) Sucrose-malic acid type DES supported activated carbon: 100 mL of ethanol was added to a three-necked round bottom flask, 5 g of sucrose-malic acid type DES was added, and after stirring to dissolve, 10 g of activated carbon powder was added. The mixture was stirred under vacuum for 20 h, and the resulting mixture was filtered. The solid adsorbent material was dried in a vacuum drying oven at 95 °C for 24 h to obtain sucrose-malic acid type DES supported activated carbon.

[0081] (3) Air purification charcoal bag for electronic cigarettes: The sucrose-malic acid type DES-supported activated carbon composite material obtained in step (2) is put into a burlap bag to make a charcoal bag, which is the air purification charcoal bag for electronic cigarettes.

[0082] III. Experimental Examples

[0083] Experimental Example 1

[0084] This experimental example focuses on the air-purifying carbon pack for electronic cigarettes prepared in Example 7, and measures its purification effect on the smoke in the electronic cigarette environment.

[0085] In a laboratory-constructed acrylic microenvironment (0.5m long, 0.5m wide, 0.3m high), either a 1kg activated carbon bag or a glycerol-ChCl type DES-loaded activated carbon bag was placed inside. A single-channel smoke extractor was used according to the CORESTA e-cigarette inhalation protocol, with a puff volume of 55mL, a 3s puff duration, a 30s interval between puffs, and a square wave inhalation curve. Fifty puffs were performed, and the smoke was released into the microenvironment. Thirty minutes after the inhalation ended, an air sampler connected to an XAD-4 adsorption tube was used to collect ambient smoke from the simulated microenvironment. The air sampler flow rate was 0.5L / min, and the sampling time was 60 minutes. A control experiment was conducted without carbon bags in the simulated microenvironment.

[0086] After sampling, the adsorption tube packing was transferred to a 2 mL chromatographic bottle, and 50 μL of 1,3-butanediol, quinoline mixed internal standard solution and 1 mL of ethyl acetate extraction solution were added. The mixture was ultrasonically extracted for 30 min, and the extract was filtered through an organic phase filter membrane for GC-MS analysis.

[0087] GC-MS instrument conditions: Column: DB-ALC1 (30m × 320μm × 1.8μm); Carrier gas: Helium, flow rate: 1.2 mL / min; Temperature program: Start at 50℃, hold for 3 min, increase to 220℃ at 10℃ / min, hold for 5 min. Total run time: 25 min. Solvent delay: 6.5 min; Full scan (25–350 amu) and Selected ion scan (SIM) were performed simultaneously. Ionization energy: 70 eV; Transfer line temperature: 220℃. Retention times and qualitative / quantitative ion information for each target analyte are shown in Table 1.

[0088] Table 1 Mass spectrometry parameters for compounds and internal standards

[0089]

[0090]

[0091] The purification effect of glycerol-ChCl type DES-supported activated carbon packs on e-cigarette smoke is shown in Table 2.

[0092] Table 2. Nicotine, glycerol, and propylene glycol content in e-cigarette smoke (μg / m³) 3 )

[0093]

[0094] The above results indicate that when using glycerol-ChCl type DES-supported activated carbon packs to purify e-cigarette smoke in a simulated microenvironment with a purification time of 30 minutes, the levels of nicotine, glycerol, and propylene glycol in the simulated microenvironment air are lower than those purified using activated carbon packs, as well as the control sample. The experimental results demonstrate that glycerol-ChCl type DES-supported activated carbon packs are more effective than ordinary activated carbon packs in purifying secondhand smoke from e-cigarettes.

[0095] Experimental Example 2

[0096] This experimental example focuses on the air-purifying carbon pack for electronic cigarettes prepared in Example 8, and measures its purification effect on the smoke in the electronic cigarette environment.

[0097] In a laboratory-constructed acrylic microenvironment (0.5m long, 0.45m wide, 0.3m high), 0.5kg activated carbon packets or propylene glycol-ChCl type DES-supported activated carbon packets were placed. A single-channel smoke extractor was used according to the CORESTA e-cigarette inhalation protocol, with a puff volume of 55mL per puff, a 3s puff duration, a 30s interval between puffs, and a square wave inhalation curve. Fifty puffs were performed. The propylene glycol-ChCl type DES-supported activated carbon packet's effect on purifying the e-cigarette smoke was evaluated using the same method as in Experiment 1. The results are shown in Table 3.

[0098] Table 3. Nicotine, glycerol, and propylene glycol content in e-cigarette smoke (μg / m³) 3 )

[0099]

[0100] The above results indicate that using propylene glycol-ChCl type DES-supported activated carbon packs to purify e-cigarette smoke is more effective than using ordinary carbon packs.

[0101] Experimental Example 3

[0102] This experimental example focuses on the air-purifying carbon pack for electronic cigarettes prepared in Example 9, and measures its purification effect on the smoke in the electronic cigarette environment.

[0103] In a laboratory-constructed acrylic microenvironment (0.5m long, 0.5m wide, 0.3m high), either a 1kg activated carbon bag or a D / L-proline-lactic acid type NDES-loaded activated carbon bag was placed inside. A single-channel smoke extractor was used according to the CORESTA e-cigarette inhalation protocol, with a puff volume of 55mL, a 3s puff duration, a 30s interval between puffs, and a square wave inhalation curve. Fifty puffs were performed, and the smoke was released into the microenvironment. One hour after the inhalation ended, an air sampler connected to an XAD-4 adsorption tube was used to collect ambient smoke from the simulated microenvironment. The air sampler flow rate was 0.5L / min, and the sampling time was 60min. A control experiment was conducted without carbon bags in the simulated microenvironment.

[0104] After sampling, the adsorption tube packing was transferred to a 2 mL chromatographic vial, and 50 μL of a mixed internal standard solution of 1,3-butanediol and quinoline and 1 mL of ethyl acetate extraction solution were added. The mixture was ultrasonically extracted for 30 min, and the extract was filtered through an organic phase membrane for GC-MS analysis. GC-MS instrument conditions were the same as in Example 1. The purification effect of D / L-proline-lactic acid type DES-supported activated carbon packs on e-cigarette smoke is shown in Table 4.

[0105] Table 4. Nicotine, glycerol, and propylene glycol content in e-cigarette smoke (μg / m³) 3 )

[0106]

[0107] The above results indicate that when using D / L-proline-lactic acid type DES-supported activated carbon packs to purify e-cigarette smoke in a simulated microenvironment for 1 hour, the levels of nicotine, glycerol, and propylene glycol in the air are lower than those in the control sample compared to the situation where activated carbon packs are used for purification. The experimental results show that D / L-proline-lactic acid type DES-supported activated carbon packs are more effective than ordinary activated carbon packs in purifying secondhand smoke from e-cigarettes.

[0108] Experiment Example 4

[0109] This experiment focuses on the air-purifying carbon pack for electronic cigarettes prepared in Example 10, and measures its purification effect on the smoke in the electronic cigarette environment.

[0110] In a laboratory-constructed acrylic microenvironment (0.5m long, 0.45m wide, 0.3m high), 0.5kg activated carbon packets or sorbitol-betaine type DES carbon packets were placed. A single-channel smoke extractor was used according to the CORESTA e-cigarette inhalation protocol, with a puff volume of 55mL, a 3s puff duration, a 30s interval, and a square wave inhalation curve. Fifty puffs were performed. The sorbitol-betaine type DES carbon packet's effect on purifying the e-cigarette smoke environment was evaluated using the same method as in Experiment 1. The results are shown in Table 5.

[0111] Table 5. Nicotine, glycerol, and propylene glycol content in e-cigarette smoke (μg / m³) 3 )

[0112] control sample 8.41 31.6 25.7 Activated carbon packs 6.01 24.9 19.6 Sorbitol-betaine type DES 3.49 14.8 11.4

[0113] The above results indicate that using sorbitol-betaine type DES-supported activated carbon packs to purify e-cigarette smoke is more effective than using ordinary carbon packs.

[0114] Experimental Example 5

[0115] This experiment focuses on the air-purifying carbon pack for electronic cigarettes prepared in Example 11, and measures its purification effect on the smoke in the electronic cigarette environment.

[0116] In a laboratory-constructed acrylic microenvironment (0.5m long, 0.40m wide, 0.35m high), 1kg of activated carbon packs or glucose-L-glutamate (GLS) DES were placed inside. A single-channel smoke extractor was used according to the CORESTA e-cigarette inhalation protocol, with a puff volume of 55mL, a 3s puff duration, a 30s interval between puffs, and a square wave inhalation curve. Fifty puffs were performed. The purification effect of the GLS DES pack on the e-cigarette environment was evaluated using the same method as in Experiment 1. The results are shown in Table 6.

[0117] Table 6. Nicotine, glycerol, and propylene glycol content in e-cigarette smoke (μg / m³) 3 )

[0118]

[0119] The above results indicate that using glucose-L-glutamate type DES-supported activated carbon packs to purify e-cigarette smoke is more effective than using ordinary carbon packs.

[0120] Experimental Example 6

[0121] This experimental example focuses on the air-purifying carbon pack for electronic cigarettes prepared in Example 12, and measures its purification effect on the smoke in the electronic cigarette environment.

[0122] In a laboratory-constructed acrylic microenvironment (0.5m long, 0.40m wide, 0.3m high), 1.0kg activated carbon packets or sucrose-malic acid type DES packets were placed. A single-channel smoke extractor was used according to the CORESTA e-cigarette inhalation protocol, with a puff volume of 55mL per puff, a 3s puff duration, a 30s interval between puffs, and a square wave inhalation curve. Fifty puffs were performed. The sucrose-malic acid type DES packet's effect on purifying the e-cigarette smoke was evaluated using the same method as in Experiment 1. The results are shown in Table 7.

[0123] Table 7. Nicotine, glycerol, and propylene glycol content in e-cigarette smoke (μg / m³) 3 )

[0124] control sample 7.71 35.2 28.7 Activated carbon packs 4.56 24.3 15.0 Sucrose-malic acid type DES 1.49 8.63 8.24

[0125] The above results indicate that using sucrose-malic acid type DES-supported activated carbon packs to purify e-cigarette smoke is more effective than using ordinary activated carbon packs.

Claims

1. The use of an air purification carbon pack for an electronic cigarette in purifying nicotine, propylene glycol and glycerol in electronic cigarette smoke, characterized in that, The carbon pack includes activated carbon and a hydrogen donor-acceptor type low co-solubility solvent supported on the activated carbon; The hydrogen donor-acceptor type low commensurate solvent is a glycerol-choline chloride type low commensurate solvent, a propylene glycol-choline chloride type low commensurate solvent, a sorbitol-betaine type low commensurate solvent, a glucose-L-glutamate type low commensurate solvent, or a sucrose-malic acid type low commensurate solvent; The molar ratio of the hydrogen donor to the hydrogen acceptor is 1~2:1~3.

2. Use according to claim 1, characterized in that, The eutectic solvent is a sucrose-malic acid type eutectic solvent.

3. The application as described in claim 1, characterized in that, The method for preparing the charcoal bag includes the following steps: (1) The hydrogen donor and the hydrogen acceptor are mixed and heated to obtain a hydrogen donor-hydrogen acceptor type low co-solubility solvent; (2) Dissolve the hydrogen donor-acceptor type low eutectic solvent in the solvent, then mix the activated carbon powder with the low eutectic solvent, separate the solid and liquid, and dry the solid material to obtain hydrogen donor-acceptor type low eutectic solvent-supported activated carbon. (3) The activated carbon loaded with hydrogen donor-acceptor type low co-solution solvent is placed in the bag to make a carbon bag, and the air purification carbon bag for electronic cigarettes is obtained.

4. The application as described in claim 3, characterized in that, The mass ratio of the hydrogen donor-acceptor type low co-solubility solvent to activated carbon in step (2) is 0.05~0.5:

1.

5. The application as described in claim 3, characterized in that, The heating in step (1) is water bath heating, and the heating temperature is 50~100℃.

6. The application as described in claim 5, characterized in that, The heating time is 20-60 minutes.

7. The application as described in claim 3, characterized in that, The drying temperature in step (2) is 90~100℃.

8. The application as described in claim 7, characterized in that, The drying time is 16-24 hours.

9. The application of an air-purifying charcoal pack for electronic cigarettes in purifying nicotine, propylene glycol, and glycerol in electronic cigarette vapor, characterized in that, The carbon pack includes activated carbon and a hydrogen donor-acceptor type low co-solubility solvent supported on the activated carbon; The hydrogen donor is D / L-proline; The hydrogen acceptor is one or any combination of lactic acid and malic acid; The molar ratio of the hydrogen donor to the hydrogen acceptor is 1~2:1~3.

10. The application as described in claim 9, characterized in that, The method for preparing the charcoal bag includes the following steps: (1) The hydrogen donor and the hydrogen acceptor are mixed and heated to obtain a hydrogen donor-hydrogen acceptor type low co-solubility solvent; (2) Dissolve the hydrogen donor-acceptor type low eutectic solvent in the solvent, then mix the activated carbon powder with the low eutectic solvent, separate the solid and liquid, and dry the solid material to obtain hydrogen donor-acceptor type low eutectic solvent-supported activated carbon. (3) The activated carbon loaded with hydrogen donor-acceptor type low co-solution solvent is placed in the bag to make a carbon bag, and the air purification carbon bag for electronic cigarettes is obtained.

11. The application as described in claim 9, characterized in that, The mass ratio of the hydrogen donor-acceptor type low co-solubility solvent to activated carbon in step (2) is 0.05~0.5:

1.

12. The application as described in claim 9, characterized in that, The heating in step (1) is water bath heating, and the heating temperature is 50~100℃.

13. The application as described in claim 12, characterized in that, The heating time is 20-60 minutes.

14. The application as described in claim 9, characterized in that, The drying temperature in step (2) is 90~100℃.

15. The application as described in claim 14, characterized in that, The drying time is 16-24 hours.

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