CN112705177A - Porous adsorption material and preparation method and application thereof - Google Patents

Porous adsorption material and preparation method and application thereof Download PDF

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CN112705177A
CN112705177A CN202011613616.8A CN202011613616A CN112705177A CN 112705177 A CN112705177 A CN 112705177A CN 202011613616 A CN202011613616 A CN 202011613616A CN 112705177 A CN112705177 A CN 112705177A
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styrene
maleic anhydride
oil
adsorption material
porous
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CN112705177B (en
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庞希贵
斯炎
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Beijing Zhonghai Cutting Edge Material Technology Co ltd
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    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
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Abstract

The invention relates to the field of kitchen oil fume purification functional materials, in particular to a porous adsorption material and a preparation method and application thereof. The porous adsorption material is hollow microspheres with porous surfaces; the outer surface of the sphere is hydrophilic, and the inner surface is oleophilic; the diameter of the hollow microsphere is 500 nm-2 mu m, and the diameter of the hole is 50-200 nm. The porous adsorption material can adsorb oleophylic chemical components in the oil fume through the synergistic effect of the micropores penetrating through the surface and oleophylic substances in the cavity, and the hydrophilicity of the outer surface can ensure that pollution-free water vapor can smoothly pass through and does not enter the cavity, so that the removal efficiency of the oleophylic components in the oil fume by filtration and adsorption is improved by selective adsorption. The porous adsorption material can perform catalytic oxidation on VOC in oil fume through the precious metal nanoparticles compounded on the surface, and the problem that the VOC cannot be treated by the traditional filtering adsorption material is solved in a targeted manner.

Description

Porous adsorption material and preparation method and application thereof
Technical Field
The invention relates to the field of kitchen oil fume purification functional materials, in particular to a porous adsorption material and a preparation method and application thereof.
Background
The huge population base and the rich dietary culture determine that the kitchen waste and the oil smoke bring huge burden to the environment; the cooking fume exhaust gas becomes one of the main pollution sources in cities, and becomes a city 'three pollution killer' together with industrial exhaust gas and automobile exhaust gas. The harmful substances contained in the oil smoke mainly comprise solid particles, oil drop particles, Volatile Organic Compounds (VOC) and the like, and the oil smoke is an aerosol containing gas, liquid and solid phases, and the components of the aerosol are more than three hundred, including fatty acid, alkane, olefin, aldehyde, ketone, alcohol, ester, aromatic compounds, heterocyclic compounds and the like. Research shows that many chemical substances have lung toxicity, immune toxicity, genetic toxicity and potential carcinogenicity, and can seriously affect the daily life and physical health of people. Therefore, oil smoke treatment is a problem which must be faced and solved under the rapid development of the society nowadays.
However, there are many limitations and problems associated with monitoring and treating soot exhaust, such as: the urban catering industry is numerous and scattered, so that supervision information is lost, oil smoke pollution is not paid attention to by a plurality of enterprises, individual households of the catering industry and common residents, manpower and material resources of supervision departments are limited, monitoring methods are lagged behind, and the like. However, with the advance of smart city construction and the continuous improvement of a big data platform, the existing technical means can sufficiently improve the monitoring method and the information feedback, so that the technology for processing the oil smoke waste gas is urgently updated.
At present, the treatment of oil smoke waste gas is very simple and ineffective, and most of the time, the waste gas is simply pumped away from the local environment and discharged into the large environment, so that the environmental pollution is completely unavoidable. Many processing techniques and equipment have been developed in the prior art, including mechanical, filtration, wet, biological, catalytic purification, electrostatic and hybrid. Since it is difficult to effectively treat the oil smoke in a single manner, it is known that the grading treatment by different methods is the most effective means at present.
In the classification treatment of the oil fume, larger particulate matters are usually stripped by a mechanical method of inertial collision, and then advanced treatment is carried out by a filtering device or a liquid washing or electrostatic deposition or catalytic oxidation mode. The catalytic oxidation method has strong processing capacity, but is often only suitable for large-scale food processing enterprises, and small and medium-scale catering industries and residents have extremely low use-price ratio and are difficult to popularize; the electrostatic deposition technology is mature at present and has a large market share, but the cost is high because an oil film is generated in the treatment process to block discharge and needs to be cleaned regularly; filtration and adsorption usually utilize lipophilic porous material to hold back the purification, and is high-efficient stable, with low costs, but adsorption filtration is difficult to clear away organic compound (VOC), and the filter material easily blocks up, needs regularly to change and has increased its running cost again, has restricted its popularization and application to a certain extent. However, the generation of oil film in electrostatic deposition is difficult to avoid, and the filtration adsorption mode can realize technological innovation by changing the adsorption material.
In view of the above, the present invention is particularly proposed.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the following technical scheme:
the invention provides a porous adsorption material which is a hollow microsphere with a porous surface; the outer surface of the sphere is hydrophilic, and the inner surface is oleophilic;
the diameter of the hollow microsphere is 500 nm-2 mu m, and the diameter of the hole is 50-200 nm.
In the prior art, most of the adsorption materials adopted for filtration and adsorption are activated carbon, non-woven fabrics, sponges, spherical filter materials and the like, but the adsorption materials are adsorbed by utilizing the attraction effect generated by micropores and further do not have obvious selectivity. The invention unexpectedly discovers that the porous adsorbing material is adopted to replace the traditional adsorbing material, and has the following obvious advantages: the porous adsorption material provided by the invention is in the shape of hollow microspheres with porous surfaces and micron-scale sizes, and the outer surface of the sphere is hydrophilic and the inner surface of the sphere is oleophilic, so that the adsorption material has selectivity on oil smoke interception; specifically, water vapor in the oil smoke is hardly affected, and oily particles are sucked into the cavity and trapped; the components in the oil smoke are complex, the properties of different compounds are different, and a simple traditional material is not easy to uniformly intercept, while the inner surface of the porous adsorption material has oleophylic property, the specific functional groups of the porous adsorption material can be changed along with the change of reaction raw materials, such as alkyl, aromatic groups and the like, so that the porous adsorption material with the inner surface having different functional groups can be prepared, and a mixed adsorption material is obtained, so that oily particles can be intercepted more widely; the surface of the porous adsorption material has active groups, and noble metal nano particles such as Pt groups and the like can be modified, so that Volatile Organic Compounds (VOC) can be catalyzed and oxidized at a certain temperature, and the problem that the VOC cannot be treated by a filtering adsorption method is solved to a certain extent.
The invention also provides a preparation method of the porous adsorption material, which comprises the following steps:
(1) dissolving a silane coupling agent containing hydrophilic groups, tetraethyl orthosilicate and a silane coupling agent containing lipophilic groups into an organic solvent to obtain an oil phase solution;
(2) dissolving a hydrolyzed styrene-maleic anhydride copolymer and Tween 80 into water, and adjusting the pH value to weak acidity to obtain an aqueous phase solution;
(3) mixing the oil phase solution and the water phase solution, and shearing and emulsifying to obtain an oil-in-water emulsion;
(4) carrying out sol-gel reaction on the oil-in-water emulsion, washing and drying to obtain microsphere powder;
(5) dispersing the microsphere powder into water, adding chloroplatinic acid, adsorbing for 0.5-1.5 h, and then adding NaBH4And carrying out in-situ reduction, washing and drying to obtain the catalyst.
In the invention, emulsion interface materialization is realized by taking emulsion liquid drops as soft templates and adopting a sol-gel reaction. A small amount of Tween 80 acts as a pore forming agent to allow the surface of the microspheres to have through-going holes. Due to the interfacial induction effect of the hydrolyzed styrene-maleic anhydride copolymer, the three silane coupling agents are orderly arranged on the interface, the hydrophilic groups face the water phase, the lipophilic groups face the oil phase, and finally the outer surface and the inner surface of the sphere of the porous adsorption material are hydrophilic and lipophilic. In addition, the Pt nanoparticles are loaded through adsorption reduction of functional groups on the surface, so that good catalytic oxidation performance on VOCs can be displayed at relatively low temperature.
In order to further improve the quality of the porous adsorption material, the preparation method is optimized, and specifically comprises the following steps:
preferably, the silane coupling agent containing hydrophilic groups is one or more selected from 3-aminopropyltrimethoxysilane, 3- (2-aminoethylamino) propyltrimethoxysilane and 3-glycidyloxypropyltrimethoxysilane; 3-aminopropyltrimethoxysilane is preferred.
Preferably, the lipophilic group-containing silane coupling agent is one or more selected from n-octyltrimethoxysilane, phenyltrimethoxysilane, 3- (acryloyloxy) propyltrimethoxysilane, n-dodecyltrimethoxysilane, hexadecyltrimethoxysilane, octadecyltrimethoxysilane, 3- (trimethoxysilyl) propyl methacrylate, (3-mercaptopropyl) trimethoxysilane, methyltrimethoxysilane, ethyltrimethoxysilane, n-propyltrimethoxysilane, vinyltrimethoxysilane, 3-chloropropyltrimethoxysilane, (3-isocyanopropyl) triethoxysilane, and allyltrimethoxysilane; preferably one or more selected from octyl trimethoxysilane, phenyl trimethoxysilane, allyl trimethoxysilane, 3- (acryloyloxy) propyl trimethoxysilane, n-dodecyl trimethoxysilane, hexadecyl trimethoxysilane and octadecyl trimethoxysilane.
Preferably, the organic solvent is one or more selected from n-hexane, n-heptane, n-decane, toluene and xylene.
Preferably, the hydrophilic group-containing silane coupling agent: tetraethyl orthosilicate: a lipophilic group-containing silane coupling agent (1-2): (5-6): (0.5 to 1).
Preferably, the hydrolyzed styrene-maleic anhydride copolymer (HSMA) is prepared by a process comprising the steps of:
(1) adding styrene and maleic anhydride into a solvent, adding azobisisobutyronitrile after the styrene and the maleic anhydride are completely dissolved, and carrying out free radical polymerization at 80-90 ℃ to obtain a styrene-maleic anhydride copolymer;
(2) and adding the styrene-maleic anhydride copolymer into an aqueous solution of sodium hydroxide to perform hydrolysis reaction.
Further, the molar ratio of the styrene to the maleic anhydride is 0.5-1.5: 0.5 to 1.5; preferably 1: 1.
Further, the solvent is one or more selected from toluene, xylene and trimethylbenzene; toluene is preferred.
Further, the azobisisobutyronitrile accounts for 0.3-0.6% of the total mass of the styrene and the maleic anhydride.
Further, the hydrolysis reaction is carried out for 2.5-3.5 h at 75-85 ℃.
Preferably, the styrene-maleic anhydride copolymer is hydrolyzed in mass ratio: tween 80 ═ (15-30): 1; preferably 20: 1.
preferably, the shearing emulsification is carried out for 8-12 min at 8000-12000 rpm; preferably at 10000rpm for 10 min.
And/or carrying out sol-gel reaction at 65-75 ℃ for 11-13 h; preferably at 70 ℃ for 12 h.
As a better technical scheme of the invention, the preparation method comprises the following steps:
(1) the mass ratio of (1-2): (5-6): (0.5-1) dissolving aminopropyltrimethoxysilane, tetraethyl orthosilicate and a silane coupling agent containing lipophilic groups into an organic solvent to obtain an oil phase solution;
(2) mixing a mixture of 1:1, adding styrene and maleic anhydride into a solvent, adding azobisisobutyronitrile after the styrene and the maleic anhydride are completely dissolved, and carrying out free radical polymerization reaction at the temperature of 80-90 ℃ to obtain a styrene-maleic anhydride copolymer;
(3) adding the styrene-maleic anhydride copolymer into a 10% sodium hydroxide aqueous solution, and hydrolyzing at 75-85 ℃ for 2.5-3.5 h to obtain a hydrolyzed styrene-maleic anhydride copolymer;
(4) and (2) mixing the following components in percentage by mass: 1, dissolving the hydrolyzed styrene-maleic anhydride copolymer and Tween 80 in water, and adjusting the pH value to 3-4 to obtain an aqueous phase solution;
(5) mixing the oil phase solution and the water phase solution, and shearing and emulsifying at 10000rpm for 10min to obtain an oil-in-water emulsion;
(6) carrying out sol-gel on the oil-in-water emulsion at 65-75 ℃ for 11-13 h, washing and drying to obtain microsphere powder;
(7) dispersing the microsphere powder into water, adding chloroplatinic acid, adsorbing for 0.5-1.5 h, and then adding NaBH4And carrying out in-situ reduction, washing and drying to obtain the catalyst.
The invention also provides the porous adsorption material prepared by the method.
The invention also provides the application of the porous adsorption material in the separation and purification of oil fume; preferably, the oil fume gas comprises solid particles, oil droplet particles and volatile organic compounds.
When the porous adsorption material is used for oil fume separation and purification treatment, the porous adsorption material with different oleophylic groups in the cavity can be mixed together for use, for example, the inner surface of the porous adsorption material is provided with alkyl, aryl, allyl, aldehyde group and the like.
The invention has the beneficial effects that:
(1) the porous adsorption material can adsorb oleophylic chemical components in the oil fume through the synergistic effect of the micropores penetrating through the surface and oleophylic substances in the cavity, and the hydrophilicity of the outer surface can ensure that pollution-free water vapor can smoothly pass through and does not enter the cavity, so that the removal efficiency of the oleophylic components in the oil fume by filtration and adsorption is improved by selective adsorption.
(2) The porous adsorption material can realize that different oleophylic groups are carried in the cavity by changing the oleophylic functional groups of the silane coupling agent.
(3) The porous adsorption material can perform catalytic oxidation on VOC in oil fume through the precious metal nanoparticles compounded on the surface, and the problem that the VOC cannot be treated by the traditional filtering adsorption material is solved in a targeted manner.
Drawings
FIG. 1 is an SEM image of a porous adsorbent material of example 1;
fig. 2 is a TEM image of the porous adsorbent of example 1.
Detailed Description
The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
Example 1
The present embodiment provides a porous adsorbent material (as shown in fig. 1 and 2), and the preparation method of the porous adsorbent material is as follows:
(1) dissolving 1.08g of aminopropyltrimethoxysilane, 5.2g of ethyl orthosilicate and 0.82g of n-octyltrimethoxysilane into 25g of n-decane to obtain an oil phase solution;
(2) adding a certain amount of toluene into a three-necked bottle provided with a condenser pipe, a thermometer and a stirrer, introducing nitrogen to remove oxygen, adding styrene and maleic anhydride (the molar ratio is 1: 1) accounting for 10 percent of the mass of the toluene, stirring and dissolving at room temperature, adding an initiator Azobisisobutyronitrile (AIBN) accounting for 0.5 percent of the mass of a monomer (namely the total amount of the styrene and the maleic anhydride), mechanically stirring uniformly, placing the three-necked bottle into a constant-temperature water bath at 85 ℃, keeping stirring, condensing and refluxing, continuously introducing nitrogen, continuing to react for 4 hours when white precipitates are observed, stopping the reaction, cooling the reaction mixture to room temperature, performing suction filtration, and performing vacuum drying on the obtained white powder at 60 ℃ to obtain a styrene-maleic anhydride copolymer;
(3) adding 10% of styrene-maleic anhydride copolymer into 10% sodium hydroxide aqueous solution, stirring and hydrolyzing for 3h at 80 ℃ to obtain light yellow transparent viscous solution (namely hydrolyzed styrene-maleic anhydride copolymer);
(4) adding 10% of the hydrolyzed styrene-maleic anhydride copolymer into 75g of water, adjusting the pH value of a system to 3-4 by using 2M hydrochloric acid, and adding Tween 80 (HSMA: Tween 80 ═ 20: 1) to obtain an aqueous phase solution;
(5) mixing the oil phase solution and the water phase solution, and shearing and emulsifying for 10min at room temperature at 10000rpm by using a high-speed shearing emulsifying machine to obtain an oil-in-water emulsion;
(6) carrying out sol-gel on the oil-in-water emulsion at 70 ℃ for 12h, washing the oil-in-water emulsion with water and ethanol for three times respectively after the reaction is finished, and drying the oil-in-water emulsion to obtain microsphere powder;
(7) dispersing the microsphere powder into water, and adding a small amount of chloroplatinumAcid, adsorbing for 1h, and adding a trace amount of NaBH4And carrying out in-situ reduction, washing and drying to obtain the porous adsorption material with the surface compounded with the Pt nano particles.
Example 2
The present embodiment provides a porous adsorption material, and a preparation method of the porous adsorption material includes:
(1) dissolving 1.08g of aminopropyltrimethoxysilane, 5.2g of ethyl orthosilicate and 0.82g of phenyltrimethoxysilane into 25g of n-decane to obtain an oil phase solution;
(2) adding a certain amount of toluene into a three-necked bottle provided with a condenser pipe, a thermometer and a stirrer, introducing nitrogen to remove oxygen, adding styrene and maleic anhydride (the molar ratio is 1: 1) accounting for 10 percent of the mass of the toluene, stirring and dissolving at room temperature, adding an initiator Azobisisobutyronitrile (AIBN) accounting for 0.5 percent of the mass of a monomer (namely the total amount of the styrene and the maleic anhydride), mechanically stirring uniformly, placing the three-necked bottle into a constant-temperature water bath at 85 ℃, keeping stirring, condensing and refluxing, continuously introducing nitrogen, continuing to react for 4 hours when white precipitates are observed, stopping the reaction, cooling the reaction mixture to room temperature, performing suction filtration, and performing vacuum drying on the obtained white powder at 60 ℃ to obtain a styrene-maleic anhydride copolymer;
(3) adding 10% of styrene-maleic anhydride copolymer into 10% sodium hydroxide aqueous solution, stirring and hydrolyzing for 3h at 80 ℃ to obtain light yellow transparent viscous solution (namely hydrolyzed styrene-maleic anhydride copolymer);
(4) adding 10% of the hydrolyzed styrene-maleic anhydride copolymer into 75g of water, adjusting the pH value of a system to 3-4 by using 2M hydrochloric acid, and adding Tween 80 (HSMA: Tween 80 ═ 20: 1) to obtain an aqueous phase solution;
(5) mixing the oil phase solution and the water phase solution, and shearing and emulsifying for 10min at room temperature at 10000rpm by using a high-speed shearing emulsifying machine to obtain an oil-in-water emulsion;
(6) carrying out sol-gel on the oil-in-water emulsion at 70 ℃ for 12h, washing the oil-in-water emulsion with water and ethanol for three times respectively after the reaction is finished, and drying the oil-in-water emulsion to obtain microsphere powder;
(7) dispersing the microsphere powder into water, adding a small amount of chloroplatinic acid, adsorbing for 1h, and then adding a trace amount of NaBH4And carrying out in-situ reduction, washing and drying to obtain the porous adsorption material with the surface compounded with the Pt nano particles.
Example 3
The present embodiment provides a porous adsorption material, and a preparation method of the porous adsorption material includes:
(1) dissolving 1.08g of aminopropyltrimethoxysilane, 5.2g of ethyl orthosilicate and 0.82g of allyltrimethoxysilane into 25g of n-decane to obtain an oil phase solution;
(2) adding a certain amount of toluene into a three-necked bottle provided with a condenser pipe, a thermometer and a stirrer, introducing nitrogen to remove oxygen, adding styrene and maleic anhydride (the molar ratio is 1: 1) accounting for 10 percent of the mass of the toluene, stirring at room temperature for dissolving, adding an initiator Azobisisobutyronitrile (AIBN) accounting for 0.5 percent of the mass of a monomer (namely the total amount of the styrene and the maleic anhydride), mechanically stirring uniformly, placing the three-necked bottle into a constant-temperature water bath at 85 ℃, keeping stirring, condensing and refluxing, continuously introducing nitrogen, continuing to react for 4 hours when white precipitates are observed, stopping the reaction, cooling the reaction mixture to room temperature, performing suction filtration, and performing vacuum drying on the obtained white powder at 60 ℃ to obtain a styrene-maleic anhydride copolymer;
(3) adding 10% of styrene-maleic anhydride copolymer into 10% sodium hydroxide aqueous solution, stirring and hydrolyzing for 3h at 80 ℃ to obtain light yellow transparent viscous solution (namely hydrolyzed styrene-maleic anhydride copolymer);
(4) adding 10% of the hydrolyzed styrene-maleic anhydride copolymer into 75g of water, adjusting the pH value of a system to 3-4 by using 2M hydrochloric acid, and adding Tween 80 (HSMA: Tween 80 ═ 20: 1) to obtain an aqueous phase solution;
(5) mixing the oil phase solution and the water phase solution, and shearing and emulsifying for 10min at room temperature at 10000rpm by using a high-speed shearing emulsifying machine to obtain an oil-in-water emulsion;
(6) carrying out sol-gel on the oil-in-water emulsion at 70 ℃ for 12h, washing the oil-in-water emulsion with water and ethanol for three times respectively after the reaction is finished, and drying the oil-in-water emulsion to obtain microsphere powder;
(7) dispersing the microsphere powder into water, adding a small amount of chloroplatinic acid, adsorbing for 1h, and then adding a trace amount of NaBH4Performing in-situ reduction and washingAnd washing and drying to obtain the porous adsorption material with the surface compounded with the Pt nano particles.
Test example 1
In the experimental example, the porous adsorbing materials of the embodiments 1 to 3 are used for oil fume separation and purification treatment, and specifically include the following:
(1) the test process comprises the following steps: collecting oil fume, and blowing to a closed 500mL CCl at 5mL/s4Blowing gas for 30s, fully dissolving, and measuring the oil content by using an infrared oil measuring instrument in a small amount; the porous adsorbing materials of the embodiments 1 to 3 are mixed (the inner cavity is modified with various functional groups) and filled into a column, the same batch of oil fume passes through the column at the same air blowing speed of 5mL/s and then is led to a closed 500mL CCl4And after the gas is blown for 30s, fully dissolving the oil, and measuring the oil content by using an infrared oil measuring instrument in a small amount.
(2) And (3) test results: the non-column oil content was 126ppm, and the column-passed oil content was 4 ppm.
(3) From the results, it can be seen that: the porous adsorbing materials of examples 1 to 3 have an excellent oil smoke adsorbing function.
Although the invention has been described in detail hereinabove by way of general description, specific embodiments and experiments, it will be apparent to those skilled in the art that many modifications and improvements can be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.

Claims (10)

1. A porous adsorption material is characterized in that the porous adsorption material is hollow microspheres with porous surfaces; the outer surface of the sphere is hydrophilic, and the inner surface is oleophilic;
the diameter of the hollow microsphere is 500 nm-2 mu m, and the diameter of the hole is 50-200 nm.
2. The preparation method of the porous adsorption material is characterized by comprising the following steps:
(1) dissolving a silane coupling agent containing hydrophilic groups, tetraethyl orthosilicate and a silane coupling agent containing lipophilic groups into an organic solvent to obtain an oil phase solution;
(2) dissolving a hydrolyzed styrene-maleic anhydride copolymer and Tween 80 into water, and adjusting the pH value to weak acidity to obtain an aqueous phase solution;
(3) mixing the oil phase solution and the water phase solution, and shearing and emulsifying to obtain an oil-in-water emulsion;
(4) carrying out sol-gel reaction on the oil-in-water emulsion, washing and drying to obtain microsphere powder;
(5) dispersing the microsphere powder into water, adding chloroplatinic acid, adsorbing for 0.5-1.5 h, and then adding NaBH4And carrying out in-situ reduction, washing and drying to obtain the catalyst.
3. The preparation method according to claim 2, wherein the silane coupling agent containing hydrophilic groups is one or more selected from 3-aminopropyltrimethoxysilane, 3- (2-aminoethylamino) propyltrimethoxysilane and 3-glycidyloxypropyltrimethoxysilane; preferably 3-aminopropyltrimethoxysilane;
and/or the lipophilic group-containing silane coupling agent is one or more selected from n-octyltrimethoxysilane, phenyltrimethoxysilane, 3- (acryloyloxy) propyltrimethoxysilane, n-dodecyltrimethoxysilane, hexadecyltrimethoxysilane, octadecyltrimethoxysilane, 3- (trimethoxysilyl) propyl methacrylate, (3-mercaptopropyl) trimethoxysilane, methyltrimethoxysilane, ethyltrimethoxysilane, n-propyltrimethoxysilane, vinyltrimethoxysilane, 3-chloropropyltrimethoxysilane, (3-isocyanopropyl) triethoxysilane and allyltrimethoxysilane; preferably one or more selected from octyl trimethoxysilane, phenyl trimethoxysilane, allyl trimethoxysilane, 3- (acryloyloxy) propyl trimethoxysilane, n-dodecyl trimethoxysilane, hexadecyl trimethoxysilane and octadecyl trimethoxysilane.
4. The production method according to claim 2 or 3, characterized in that the hydrophilic group-containing silane coupling agent: tetraethyl orthosilicate: a lipophilic group-containing silane coupling agent (1-2): (5-6): (0.5 to 1).
5. The method of claim 2, wherein the hydrolyzed styrene-maleic anhydride copolymer is prepared by a method comprising the steps of:
(1) adding styrene and maleic anhydride into a solvent, adding azobisisobutyronitrile after the styrene and the maleic anhydride are completely dissolved, and carrying out free radical polymerization at 80-90 ℃ to obtain a styrene-maleic anhydride copolymer;
(2) and adding the styrene-maleic anhydride copolymer into an aqueous solution of sodium hydroxide to perform hydrolysis reaction.
6. The method according to claim 5, wherein the molar ratio of styrene to maleic anhydride is 0.5 to 1.5: 0.5 to 1.5;
and/or the solvent is one or more selected from toluene, xylene and trimethylbenzene; preferably toluene;
and/or the azobisisobutyronitrile accounts for 0.3-0.6% of the total mass of the styrene and the maleic anhydride;
and/or the hydrolysis reaction is carried out for 2.5-3.5 h at the temperature of 75-85 ℃.
7. The production method according to claim 2, 5 or 6, characterized in that the styrene-maleic anhydride copolymer is hydrolyzed by: tween 80 ═ (15-30): 1.
8. the method according to claim 2, wherein the shear emulsification is carried out at 8000 to 12000rpm for 8 to 12 min;
and/or carrying out the sol-gel reaction at 65-75 ℃ for 11-13 h.
9. A porous adsorbent material produced by the method according to any one of claims 2 to 8.
10. Use of the porous adsorbent material according to claim 1 or 9 for the separation and purification of oil fumes; preferably, the oil fume gas comprises solid particles, oil droplet particles and volatile organic compounds.
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CN107262056A (en) * 2016-04-06 2017-10-20 中国科学院化学研究所 A kind of epoxy resin-silica is combined single hole Janus hollow microspheres and preparation method thereof
WO2017188138A1 (en) * 2016-04-27 2017-11-02 太陽化学株式会社 Voc degradation agent
CN111410723A (en) * 2020-03-11 2020-07-14 江苏大学 Porous boron affinity imprinted polymer and preparation method and application thereof

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Publication number Priority date Publication date Assignee Title
US6107429A (en) * 1994-10-24 2000-08-22 Amcol International Corporation Process for producing an oil and water adsorbent polymer capable of entrapping solid particles and liquids and the product thereof
CN104945569A (en) * 2014-03-31 2015-09-30 中国科学院化学研究所 Amphiphilic particle for super-hydrophobic coating, super-hydrophobic coating and preparation method of amphiphilic particles
CN107262056A (en) * 2016-04-06 2017-10-20 中国科学院化学研究所 A kind of epoxy resin-silica is combined single hole Janus hollow microspheres and preparation method thereof
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