Preparation and regeneration method of aerogel material for gas mask filter box

Abstract

The invention relates to the technical field of gas mask adsorption materials, and discloses a preparation method of a carbon aerogel material for a gas mask filter box, and the preparation method comprises the following steps: step S1, reacting carbon aerogel, benzothiophene substances, 4-vinylpyridine and a cross-linking agent to obtain precursor carbon aerogel; s2, washing the precursor aerogel with an eluent, and drying the washed precursor aerogel to obtain pre-modified carbon aerogel; s3, carrying out high-temperature heat treatment on the pre-modified carbon aerogel to obtain modified carbon aerogel; s4, dipping the modified carbon aerogel in a benzothiophene substance solution, taking out and drying to obtain the carbon aerogel material of the filter box. The invention also discloses a regeneration method of the carbon aerogel material for the gas mask filter box, which comprises the following steps: carrying out ultrasonic cleaning and gas desorption on the adsorption material of the filter box to be regenerated, dipping in a benzothiophene substance solution, taking out and drying to obtain the regenerated carbon aerogel material. The adsorption effect of the material on benzene, xylene and cyclohexane is effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of gas masks, and in particular to a preparation and regeneration method of an aerogel material used for a gas mask filter box. Background Art

[0002] With the rapid development of chemical, petroleum, coating and other industries, the demand for organic matter in industry is growing day by day. Once these substances leak during transportation, storage and use, they will cause serious harm. Volatile organic compounds such as cyclohexane, benzene, and xylene are not only highly volatile, but also pose a great threat to human health. In particular, benzene series are listed as a first-class carcinogen by the International Agency for Research on Cancer. Traditional gas masks mostly use activated carbon as an adsorption medium, but they have technical defects such as low adsorption capacity, poor selectivity, and poor penetration resistance. Summary of the invention

[0003] The purpose of the present invention is to provide a method for preparing and regenerating aerogel materials for gas mask filter cartridges, so as to solve the problems of small adsorption capacity, poor selectivity, insufficient anti-penetration ability and complex material regeneration process existing in gas mask adsorption materials.

[0004] To achieve the above objectives, this application provides the following technical solutions: The present application discloses a method for preparing a carbon aerogel material for a gas mask filter cartridge, which specifically comprises the following steps: Step S1: adding carbon aerogel, benzothiophene substances and 4-vinylpyridine into an organic solvent, stirring fully to obtain a mixed solution, then slowly adding a crosslinker solution into the mixed solution under stirring and nitrogen protection conditions, reacting with microwaves for a period of time, centrifuging and precipitating, and vacuum drying to obtain a precursor carbon aerogel; Step S2: washing the precursor aerogel with an eluent and drying it to obtain a pre-modified carbon aerogel; Step S3: heat treating the pre-modified carbon aerogel at high temperature to obtain a modified carbon aerogel; Step S4: immersing the modified carbon aerogel in a benzothiophene substance solution, taking it out and drying it to obtain a carbon aerogel material of a filter box.

[0005] Preferably, in step S1, the carbon aerogel particle size is 0.5-2 mm, the average pore size is 0.5-3 nm, and the concentration in the mixed solution is 10-50 g / L; the benzothiophene substance is a substance in which a benzene ring and thiophene share a carbon-carbon bond, and can be one of benzothiophene, dibenzothiophene, 6-methylbenzothiophene, and benzoterthiophene, and the concentration in the mixed solution is 0.02-0.2 mol / L; the concentration of 4-vinylpyridine in the mixed solution is 0.2-0.6 mol / L; the organic solvent is one of ethanol, methanol, and toluene.

[0006] Preferably, in step S1, the crosslinking agent solution is one of a divinylbenzene solution and a ethylene glycol dimethacrylate solution, and the concentration is 0.1-1 mol / L; the volume ratio of the mixed solution to the crosslinking agent solution is 1:(0.05-0.2).

[0007] Preferably, the power of the microwave reaction in step S1 is 100-200 W, and the time is 20-40 min.

[0008] Preferably, the eluent in step S2 is one of ethanol, methanol and toluene.

[0009] Preferably, the temperature of the high temperature heat treatment in step S3 is 700-900° C., the atmosphere is one of nitrogen and argon, and the time is 1-3 hours.

[0010] Preferably, the benzothiophene substance in the benzothiophene substance solution in step S4 is the same as the benzothiophene substance in step S1, the concentration is 0.05-0.2 mol / L, and the immersion time is 1-2 h.

[0011] The present application also discloses a method for regenerating a carbon aerogel material for a gas mask filter box, and an adsorbent material prepared by the above-mentioned method for preparing a carbon aerogel material for a gas mask filter box. The regeneration method is: placing the adsorbent material of the filter box to be regenerated in ethanol for ultrasonic cleaning, centrifugal drying, placing it in a muffle furnace for gas desorption, and then immersing it in a solution of a benzothiophene substance, taking it out and drying it to obtain a regenerated carbon aerogel material.

[0012] Preferably, the gas desorption temperature is 200-300° C., and the time is 0.5-1 h; the benzothiophene substance solution and the impregnation conditions are the same as those in step S4.

[0013] Preferably, the adsorbent material is suitable for a mask filter cartridge for protection against cyclohexane, benzene, and xylene vapors.

[0014] Beneficial effects of the present invention: 1. Carbon aerogel has a large specific surface area and easily adjustable pore size, and can form a strong π interaction with benzene series, thereby enhancing its selectivity, adsorption capacity and anti-penetration ability for toluene and xylene.

[0015] 2. The present application loads a polymer formed by benzothiophene substances, 4-vinylpyridine and a cross-linking agent on the surface of carbon aerogel. The benzothiophene substances are removed in the subsequent eluent treatment process, and the polymer forms vacancies in the structure of the benzothiophene substances. After heat treatment, similar carbon-nitrogen skeleton active sites are formed, which have a strong specific adsorption effect on benzothiophene substances. During the impregnation process, the benzothiophene substances are firmly bound to the surface of the carbon aerogel. The nitrogen and sulfur atoms on the carbon material can form CN...HC and CS...HC hydrogen bonds with cyclohexane vapor molecules, thereby enhancing the scavenging effect of the carbon aerogel on cyclohexane, and enhancing its selectivity, adsorption capacity and anti-penetration ability for cyclohexane.

[0016] 3. After the carbon aerogel material of the present application fails in adsorption, the adsorbed pollutants and failed benzothiophene substances can be removed by cleaning and heat treatment, and then the aerogel material can be regenerated by re-immersing it in a benzothiophene substance solution. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of a method for preparing and regenerating an aerogel material for a gas mask filter cartridge in the present application; Figure 2 SEM image of the precursor carbon aerogel prepared in step S1 of Example 1 and S element mapping image at the corresponding position; Figure 3 SEM image of the pre-modified carbon aerogel prepared in step S2 of Example 1 and S element mapping image at the corresponding position; Figure 4 SEM image of the modified carbon aerogel prepared in step S3 of Example 1 and S element mapping image at the corresponding position; Figure 5 SEM image of the carbon aerogel material of the filter box prepared in step S4 of Example 1 and S element mapping image of the corresponding position. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is further described in detail below through the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the scope of the present invention. In addition, in the following description, the description of known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present invention.

[0019] like Figure 1 As shown, the present application discloses a method for preparing a carbon aerogel material for a gas mask filter cartridge, which specifically comprises the following steps: Step S1: adding carbon aerogel, benzothiophene substances and 4-vinylpyridine to an organic solvent, stirring thoroughly to obtain a mixed solution, then slowly adding a crosslinker solution to the mixed solution under stirring and nitrogen protection conditions, microwave reaction for a period of time, centrifugal precipitation, vacuum drying, and obtaining a precursor carbon aerogel; the carbon aerogel has a particle size of 0.5-2 mm, an average pore size of 0.5-3 nm, and a concentration in the mixed solution of 10-50 g / L; the benzothiophene substance is a substance in which a benzene ring and thiophene share a carbon-carbon bond, which can be benzothiophene, dibenzothiophene, 6-methyl The concentration of one of benzothiophene and benzoterthiophene in the mixed solution is 0.02~0.2mol / L; the concentration of 4-vinylpyridine in the mixed solution is 0.2~0.6mol / L; the organic solvent is one of ethanol, methanol and toluene; the crosslinking agent solution is one of divinylbenzene solution and ethylene glycol dimethacrylate solution, and the concentration is 0.1~1mol / L; the volume ratio of the mixed solution to the crosslinking agent solution is 1:(0.05~0.2); the power of the microwave reaction is 100~200W, and the time is 20~40min.

[0020] Step S2: washing the precursor aerogel with an eluent, and drying, to obtain a pre-modified carbon aerogel; the eluent is one of ethanol, methanol, and toluene.

[0021] Step S3: subjecting the pre-modified carbon aerogel to high-temperature heat treatment to obtain modified carbon aerogel; the high-temperature heat treatment is performed at a temperature of 700-900° C., in an atmosphere of nitrogen or argon, for a time of 1-3 hours.

[0022] Step S4: immersing the modified carbon aerogel in a benzothiophene substance solution, taking it out and drying it to obtain a carbon aerogel material of the filter box. The benzothiophene substance in the benzothiophene substance solution is the same as the benzothiophene substance in step S1, with a concentration of 0.05-0.2 mol / L, and the immersion time is 1-2 h.

[0023] A method for regenerating a carbon aerogel material for a gas mask filter cartridge comprises: placing an adsorbent material of a filter cartridge to be regenerated in ethanol for ultrasonic cleaning, centrifugal drying, placing the adsorbent material in a muffle furnace for gas desorption, and then immersing the adsorbent material in a benzothiophene substance solution, taking the adsorbent material out and drying the solution to obtain a regenerated carbon aerogel material; the gas desorption temperature is 200-300° C., and the time is 0.5-1 h; the benzothiophene substance solution and the immersion conditions are the same as those in step S4.

[0024] The adsorbent material is suitable for mask filter boxes for protection against cyclohexane, benzene and xylene vapors.

[0025] Embodiment 1: This embodiment adopts the following scheme A method for preparing a carbon aerogel material for a gas mask filter cartridge comprises the following steps: Step S1: adding carbon aerogel, benzothiophene and 4-vinylpyridine to ethanol, stirring well to obtain a mixed solution, then slowly adding a divinylbenzene solution with a concentration of 0.1 mol / L to the mixed solution under stirring and nitrogen protection conditions, setting the microwave power to 100 W for 20 minutes, centrifuging and vacuum drying to obtain a precursor carbon aerogel; the carbon aerogel has a particle size of 0.5 mm, an average pore size of 0.5 nm, and a concentration of 10 g / L in the mixed solution; the concentration of benzothiophene substances in the mixed solution is 0.02 mol / L; the concentration of 4-vinylpyridine in the mixed solution is 0.2 mol / L; the volume ratio of the mixed solution to the crosslinker solution is 1:0.05; Step S2: washing the precursor aerogel with ethanol and drying it to obtain a pre-modified carbon aerogel; Step S3: heat treating the pre-modified carbon aerogel at 700° C. for 1 h under a nitrogen atmosphere to obtain a modified carbon aerogel; Step S4: immersing the modified carbon aerogel in a benzothiophene solution with a concentration of 0.05 mol / L for 1 hour, taking it out and drying it to obtain a carbon aerogel material of a filter box.

[0026] A method for regenerating a carbon aerogel material for a gas mask filter cartridge comprises: placing the adsorbent material of the filter cartridge to be regenerated in ethanol for ultrasonic cleaning, centrifugal drying, placing it in a muffle furnace for gas desorption at 200° C. for 0.5 h, then immersing it in a benzothiophene solution with a concentration of 0.05 mol / L for 1 h, taking it out and drying it to obtain a regenerated carbon aerogel material.

[0027] like Figure 2-Figure 5 As shown, the SEM and Mapping of the carbon aerogel material obtained in steps S1 to S4 in this embodiment show that the pre-modified carbon aerogel synthesized in step S1 contains rich N and S elements, indicating that the polymer formed by benzothiophene, 4-vinylpyridine and divinylbenzene is loaded on the carbon aerogel. After cleaning with the eluent of step S2, the S element in the material is basically completely eluted, indicating that the benzothiophene is washed away. After high-temperature heat treatment in step S3, no obvious collapse of the structure of the carbon aerogel is observed, and N elements are distributed, indicating that the high-temperature heat treatment maintains the integrity of the carbon skeleton. After immersion in benzothiophene solution in step S4, evenly distributed S elements appear on the carbon aerogel, indicating that benzothiophene is evenly loaded on the carbon aerogel.

[0028] Embodiment 2: This embodiment adopts the following scheme A method for preparing a carbon aerogel material for a gas mask filter cartridge specifically comprises the following steps: Step S1: adding carbon aerogel, dibenzothiophene and 4-vinylpyridine into methanol, stirring thoroughly to obtain a mixed solution, then slowly adding a 1 mol / L ethylene glycol dimethacrylate solution into the mixed solution under stirring and nitrogen protection conditions, setting the microwave power to 200 W for 40 min, centrifuging and vacuum drying to obtain a precursor carbon aerogel; the carbon aerogel has a particle size of 2 mm, an average pore size of 3 nm, and a concentration of 50 g / L in the mixed solution; the concentration of benzothiophene substances in the mixed solution is 0.2 mol / L; the concentration of 4-vinylpyridine in the mixed solution is 0.6 mol / L; the volume ratio of the mixed solution to the crosslinker solution is 1:0.2; Step S2: washing the precursor aerogel with methanol and drying it to obtain a pre-modified carbon aerogel; Step S3: heat treating the pre-modified carbon aerogel at 900° C. for 3 h in an argon atmosphere to obtain a modified carbon aerogel; Step S4: immersing the modified carbon aerogel in a dibenzothiophene solution with a concentration of 0.2 mol / L for 2 h, taking it out and drying it to obtain a carbon aerogel material of a filter box.

[0029] A method for regenerating a carbon aerogel material for a gas mask filter cartridge comprises: placing the adsorbent material of the filter cartridge to be regenerated in ethanol for ultrasonic cleaning, centrifugal drying, placing it in a muffle furnace for gas desorption at 300° C. for 1 hour, then immersing it in a dibenzothiophene solution with a concentration of 0.2 mol / L for 2 hours, taking it out and drying it to obtain a regenerated carbon aerogel material.

[0030] Embodiment 3: This embodiment adopts the following scheme A method for preparing a carbon aerogel material for a gas mask filter cartridge specifically comprises the following steps: Step S1: adding carbon aerogel, 6-methylbenzothiophene and 4-vinylpyridine to toluene, stirring well to obtain a mixed solution, then slowly adding a divinylbenzene solution with a concentration of 0.5 mol / L to the mixed solution under stirring and nitrogen protection conditions, setting the microwave power to 150 W for 30 minutes, centrifuging and vacuum drying to obtain a precursor carbon aerogel; the carbon aerogel has a particle size of 1 mm, an average pore size of 2 nm, and a concentration of 30 g / L in the mixed solution; the concentration of benzothiophene substances in the mixed solution is 0.1 mol / L; the concentration of 4-vinylpyridine in the mixed solution is 0.4 mol / L; the volume ratio of the mixed solution to the crosslinker solution is 1:0.1; Step S2: washing the precursor aerogel with toluene and drying it to obtain a pre-modified carbon aerogel; Step S3: heat treating the pre-modified carbon aerogel at 800° C. for 2 h under a nitrogen atmosphere to obtain a modified carbon aerogel; Step S4: immersing the modified carbon aerogel in a 6-methylbenzothiophene solution with a concentration of 0.1 mol / L for 1.5 h, taking it out and drying it to obtain a carbon aerogel material of a filter box.

[0031] A method for regenerating a carbon aerogel material for a gas mask filter cartridge comprises: placing an adsorbent material of the filter cartridge to be regenerated in ethanol for ultrasonic cleaning, centrifugal drying, placing the adsorbent material in a muffle furnace at 200-300° C. for gas desorption for 0.5-1 h, then immersing the adsorbent material in a 6-methylbenzothiophene solution with a concentration of 0.1 mol / L for 1.5 h, taking the adsorbent material out for drying, and obtaining a regenerated carbon aerogel material.

[0032] Embodiment 4: This embodiment adopts the following scheme A method for preparing a carbon aerogel material for a gas mask filter cartridge specifically comprises the following steps: Step S1: adding carbon aerogel, benzothiophene and 4-vinylpyridine into ethanol, stirring well to obtain a mixed solution, then slowly adding a 0.7 mol / L ethylene glycol dimethacrylate solution into the mixed solution under stirring and nitrogen protection conditions, setting the microwave power to 100 for 25 minutes, centrifuging and vacuum drying to obtain a precursor carbon aerogel; the carbon aerogel has a particle size of 1.5 mm, an average pore size of 1 nm, and a concentration of 40 g / L in the mixed solution; the concentration of benzothiophene substances in the mixed solution is 0.15 mol / L; the concentration of 4-vinylpyridine in the mixed solution is 0.5 mol / L; the volume ratio of the mixed solution to the crosslinker solution is 1:0.15; Step S2: washing the precursor aerogel with ethanol and drying it to obtain a pre-modified carbon aerogel; Step S3: heat treating the pre-modified carbon aerogel at 800° C. for 1.5 h under a nitrogen atmosphere to obtain a modified carbon aerogel; Step S4: immersing the modified carbon aerogel in a benzoterithiophene solution with a concentration of 0.15 mol / L for 1.5 h, taking it out and drying it to obtain a carbon aerogel material of a filter box.

[0033] A method for regenerating a carbon aerogel material for a gas mask filter cartridge comprises: placing the adsorbent material of the filter cartridge to be regenerated in ethanol for ultrasonic cleaning, centrifugal drying, placing it in a muffle furnace for gas desorption at 250° C. for 0.8 h, then immersing it in a 0.15 mol / L benzotrithiophene solution for 1.5 h, taking it out and drying it to obtain a regenerated carbon aerogel material.

[0034] Comparative Example 1 This comparative example uses commercial activated carbon as a blank adsorption material control.

[0035] Comparative Example 2 This comparative example uses untreated carbon aerogel.

[0036] Comparative Example 3 The difference between this comparative example and Example 1 is that step S2 is not performed.

[0037] Comparative Example 4 The difference between this comparative example and Example 1 is that step S3 is not performed.

[0038] Comparative Example 5 The difference between this comparative example and Example 1 is that step S4 is not performed.

[0039] Comparative Example 6 The difference between this comparative example and Example 1 is that the deactivated carbon aerogel is not regenerated.

[0040] With reference to GB 2890-2022 "Self-priming filter-type respirator for respiratory protection", the respirator filter cartridges assembled with the adsorption materials of Examples 1-4 and Comparative Examples 1-6 were subjected to cyclohexane, benzene and xylene vapor penetration tests under the same test conditions to test the time it takes for the filter cartridges to be penetrated by the vapor.

[0041] Referring to GB / T 12496.5-1999 "Test method for wood activated carbon - Determination of carbon tetroxide adsorption rate (activity)", cyclohexane, benzene and xylene vapor adsorption experiments were carried out on the materials of Examples 1-4 and Comparative Examples 1-6 under the same test conditions to test the saturated adsorption capacity of the materials.

[0042] The test results are shown in Table 1: Table 1 Test results summary

[0043] As can be seen from Table 1, compared with Comparative Example 1-2, Examples 1-4 have significantly improved penetration time and saturated adsorption capacity, indicating that the carbon aerogel material prepared by the present application can effectively improve the anti-penetration ability and adsorption capacity of polluted vapor, mainly because the present application loads a polymer formed by benzothiophene substances, 4-vinylpyridine and a cross-linking agent on the surface of the carbon aerogel, and the benzothiophene substances are removed during the subsequent eluent treatment process. The polymer forms vacancies in the structure of the benzothiophene substances, and forms similar carbon-nitrogen skeleton active sites after heat treatment. The active sites have a strong specific adsorption effect on benzothiophene substances. During the impregnation process, the benzothiophene substances are firmly bound to the surface of the carbon aerogel. The nitrogen and sulfur atoms on the carbon material can form CN...HC and CS...HC hydrogen bonds with cyclohexane vapor molecules, thereby enhancing the scavenging effect of the carbon aerogel on cyclohexane, and enhancing its selectivity, adsorption capacity and anti-penetration ability for cyclohexane. In addition, the untreated carbon aerogel in Comparative Example 2 also has a good adsorption effect on benzene and toluene, mainly because the porous structure composed of benzene-derived carbon rings of the carbon aerogel has a strong intermolecular force on benzene series. Compared with Comparative Example 3, Example 1 shows that the cyclohexane penetration time and saturated adsorption amount of Example 1 are significantly greater than those of Comparative Example 3, while the cyclohexane penetration time and saturated adsorption amount of benzene and xylene are not much different, mainly because Comparative Example 3 does not elute benzothiophene through step S2, and in the subsequent high-temperature heat treatment process, sulfur elements are lost and no vacancies are formed, and benzothiophene cannot be effectively loaded in step S4, thereby causing the prepared carbon aerogel material to reduce the adsorption performance of cyclohexane, while the adsorption of benzene and xylene does not require CS...HC hydrogen bonding, so the difference is not large. Compared with Comparative Example 4, Example 1 shows that the penetration time and saturated adsorption amount of cyclohexane, benzene, and xylene in Example 1 are significantly greater than those in Comparative Example 4, mainly because the heat treatment in step S3 is not performed, and the polymer is wrapped on the surface of the carbon aerogel to prevent the gas molecules to be adsorbed from diffusing into the interior of the carbon aerogel. Compared with Comparative Example 5, Example 1 has a significantly greater cyclohexane penetration time and saturated adsorption capacity than Comparative Example 5, while the cyclohexane penetration time and saturated adsorption capacity of benzene and xylene are not much different, mainly because Comparative Example 5 does not impregnate benzothiophene through step S4, and the prepared carbon aerogel cannot effectively adsorb cyclohexane through CS...HC hydrogen bonds, thereby causing a decrease in the cyclohexane adsorption performance. Compared with Comparative Example 6, there is no significant difference in the penetration time and saturated adsorption capacity of cyclohexane, benzene, and xylene between the two, mainly because the carbon aerogel material of the present application can remove the adsorbed pollutants and the failed benzothiophene substances by cleaning and heat treatment after the adsorption fails, and then re-impregnate the benzothiophene substance solution to achieve the regeneration of the aerogel material.

[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modification, equivalent substitution or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for preparing a carbon aerogel material for a gas mask filter cartridge, characterized in that: The specific steps include: Step S1: adding carbon aerogel, benzothiophene substances and 4-vinylpyridine into an organic solvent, stirring fully to obtain a mixed solution, then slowly adding a crosslinker solution into the mixed solution under stirring and nitrogen protection conditions, reacting with microwaves for a period of time, centrifuging and precipitating, and vacuum drying to obtain a precursor carbon aerogel; Step S2: washing the precursor aerogel with an eluent and drying it to obtain a pre-modified carbon aerogel; Step S3: heat treating the pre-modified carbon aerogel at high temperature to obtain a modified carbon aerogel; Step S4: immersing the modified carbon aerogel in a benzothiophene substance solution, taking it out and drying it to obtain a carbon aerogel material of a filter box.

2. The method for preparing a carbon aerogel material for a gas mask filter cartridge according to claim 1, characterized in that: In step S1, the carbon aerogel particle size is 0.5-2 mm, the average pore size is 0.5-3 nm, and the concentration in the mixed solution is 10-50 g / L; the benzothiophene substance is a substance in which a benzene ring and thiophene share a carbon-carbon bond, and can be one of benzothiophene, dibenzothiophene, 6-methylbenzothiophene, and benzoterthiophene, and the concentration in the mixed solution is 0.02-0.2 mol / L; the concentration of 4-vinylpyridine in the mixed solution is 0.2-0.6 mol / L; the organic solvent is one of ethanol, methanol, and toluene.

3. The method for preparing a carbon aerogel material for a gas mask filter cartridge according to claim 1, characterized in that: In step S1, the crosslinking agent solution is one of a divinylbenzene solution and a ethylene glycol dimethacrylate solution, and the concentration is 0.1-1 mol / L; the volume ratio of the mixed solution to the crosslinking agent solution is 1:(0.05-0.2).

4. The method for preparing a carbon aerogel material for a gas mask filter cartridge according to claim 1, characterized in that: The power of the microwave reaction in step S1 is 100-200 W, and the time is 20-40 min.

5. The method for preparing a carbon aerogel material for a gas mask filter cartridge according to claim 1, characterized in that: In step S2, the eluent is one of ethanol, methanol and toluene.

6. The method for preparing a carbon aerogel material for a gas mask filter cartridge according to claim 1, characterized in that: The temperature of the high temperature heat treatment in step S3 is 700-900° C., the atmosphere is one of nitrogen and argon, and the time is 1-3 hours.

7. The method for preparing a carbon aerogel material for a gas mask filter cartridge according to claim 1, characterized in that: The benzothiophene substance in the benzothiophene substance solution in step S4 is the same as the benzothiophene substance in step S1, the concentration is 0.05-0.2 mol / L, and the immersion time is 1-2 hours.

8. A method for regenerating carbon aerogel material for a gas mask filter cartridge, characterized in that: The adsorbent material prepared by the preparation method of a carbon aerogel material for a gas mask filter box as described in any one of claims 1 to 7, and the regeneration method is: the adsorbent material of the filter box to be regenerated is placed in ethanol for ultrasonic cleaning, centrifugal drying, placed in a muffle furnace for gas desorption, and then immersed in a benzothiophene substance solution, taken out and dried to obtain a regenerated carbon aerogel material.

9. A method for regenerating carbon aerogel material for a gas mask filter cartridge as claimed in claim 8, characterized in that: The gas desorption temperature is 200-300° C., and the time is 0.5-1 h. The benzothiophene substance solution and the impregnation conditions are the same as those in claim 7.

10. The method for preparing a carbon aerogel material for a gas mask filter cartridge according to claim 1, characterized in that: The adsorbent material is suitable for mask filter boxes for protection against cyclohexane, benzene and xylene vapors.

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