Hollow porous amino resin for separating CO2 in atmosphere as well as preparation and application of hollow porous amino resin

Abstract

The invention discloses a hollow porous amino resin for separating CO2 in atmosphere and preparation and application thereof, the preparation method comprises the following steps: dispersing a template agent and a polyhydroxy biomass compound into an alcoholic solution, then adding a pore-foaming agent, and carrying out template-oriented synthesis reaction to obtain an emulsion containing micelles; adding an alcoholic solution of organic amine into the emulsion, carrying out aggregation assembly reaction, and then centrifuging and washing to obtain a hollow amino resin precursor material; adding the hollow amino resin precursor material into a curing agent solution, and carrying out a cross-linking curing reaction to obtain a cured material; and dispersing the curing material in a solvent, and carrying out heating reaction to obtain the hollow porous amino resin for separating CO2 in the atmosphere, through cooperation of the steps, the stable amino resin with the hollow porous structure and large amino loading capacity is finally obtained, and the effect that the hollow porous amino resin gives consideration to the adsorption capacity, the adsorption rate and the adsorption stability of solid amine is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of separating CO2 from air, and particularly to a hollow porous amino resin for separating CO2 from the atmosphere, its preparation and application. Background Art

[0002] Carbon capture, utilization and storage technology (CCUS) is regarded as one of the key technologies to achieve the carbon neutrality goal. CCUS technology can capture CO2 from industrial emission point sources and reduce greenhouse gas emissions. However, traditional point source capture technologies for power plants and industrial flue gases cannot capture all the emitted CO2. In addition, the CO2 emissions from mobile emission sources such as the transportation sector account for about 50% of the total emissions, and carbon emission reduction cannot be achieved through traditional carbon capture devices. Developing direct air capture (DAC) technology to capture excessive CO2 emissions from the atmosphere is an important means to achieve carbon neutrality. The DAC technology has the characteristics of flexible site selection, low energy consumption and transportation costs, and can solve the problem of distributed CO2 emissions. By achieving net negative CO2 emissions through DAC technology and then using the captured CO2 to form a carbon cycle closed loop, net zero CO2 emissions can be achieved.

[0003] Solid amine adsorption is a new type of carbon capture technology. This technology has the advantages of high adsorption capacity, strong adsorption selectivity, easy preparation of materials, mild operating conditions and potential low energy consumption, and is considered the air carbon capture technology with the most potential for large-scale application. The most important evaluation criteria for the effect of solid amine are adsorption capacity and adsorption rate. Especially in a low-concentration CO2 environment, a high adsorption rate is more important. Currently, the solid amine prepared by the impregnation method has problems such as amine loss and poor stability, while the solid amine prepared by the grafting method (or in-situ loading) can avoid this problem. However, the solid amine prepared by the grafting method has some problems. For example, a low amine loading amount leads to a decrease in adsorption capacity, but increasing the amine loading amount will cause blockage of the internal pore structure of the solid amine, resulting in a slow adsorption rate and insufficient utilization of amine functional groups. Therefore, when the existing technology prepares solid amine for separating CO2 from the atmosphere, there are problems that the adsorption capacity, adsorption rate and adsorption stability cannot be taken into account at the same time.

[0004] Therefore, a solution that can take into account the adsorption capacity, adsorption rate and adsorption stability of solid amine is needed. Summary of the Invention

[0005] In view of this, the present application provides a hollow porous amino resin for separating CO2 from the atmosphere, its preparation and application, to solve the problem of how to take into account the adsorption capacity, adsorption rate and adsorption stability of solid amine.

[0006] To achieve the above technical purpose, the present application adopts the following technical solutions: In a first aspect, the present application provides a method for preparing a hollow porous amino resin for separating CO2 from the atmosphere, comprising the following steps: S1. Dispersing a template agent and a polyhydroxy biomass compound in an alcohol solution, adding a pore-forming agent, and performing a template-directed synthesis reaction to obtain an emulsion containing micelles; S2. Adding an alcohol solution of an organic amine to the emulsion, performing an aggregation assembly reaction, and then centrifuging and washing to obtain a hollow amino resin precursor material; S3. Adding the hollow amino resin precursor material to a curing agent solution, performing a cross-linking curing reaction to obtain a cured material; S4. Dispersing the cured material in a solvent and heating to react to obtain a hollow porous amino resin for separating CO2 from the atmosphere.

[0007] Preferably, the template agent includes one or more of F127, P123, and AEO9; and / or, the pore-forming agent includes one or more of mesitylene and N,N-dimethylbenzylamine; and / or, the polyhydroxy biomass compound includes one or more of tannic acid, catechol, and gallic acid.

[0008] Preferably, the organic amine includes one or more of tetraethylenepentamine, pentaethylenehexamine, triethylenetetramine, and polyethyleneimine.

[0009] Preferably, in step S2, the washing step is: washing alternately with ethanol and water.

[0010] Preferably, the molar ratio of the pore-forming agent to the polyhydroxy biomass compound is 0.01-0.1:1; the molar ratio of the pore-forming agent to the alcohol solution is 1-5:500; the molar ratio of the template agent to the pore-forming agent is 1-10:1.

[0011] Preferably, the temperature of the template-directed synthesis reaction is 25-45 °C.

[0012] Preferably, the temperature of the aggregation assembly reaction is 25-65 °C.

[0013] Preferably, the temperature of the curing reaction is 30-60 °C, and the curing agent includes one or more of formaldehyde, glutaraldehyde, and trioxymethylene; the temperature of the heating reaction is 80-140 °C.

[0014] In a second aspect, the present application provides a hollow porous amino resin for separating CO2 from the atmosphere.

[0015] In a third aspect, the present application provides an application of a hollow porous amino resin for separating CO2 from the atmosphere in capturing CO2 in the air.

[0016] The beneficial effects of the present application are as follows: through the coordination of the various steps of the present application, an amine-based resin with a large and stable hollow porous structure is finally obtained, thereby ensuring the amine-based loading and its stability, and the mesoporous structure can overcome the defect of blockage of the internal pore structure of the solid amine due to the increase in the amine-based loading, thereby improving the adsorption rate of the material, and finally achieving the effect of the hollow porous amine resin taking into account the adsorption capacity, adsorption rate and adsorption stability of the solid amine. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is the SEM image of the material obtained in Example 1 of the present application. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0019] The inventor unexpectedly discovered that The present application provides a method for preparing a hollow porous amine-based resin for separating CO2 from the atmosphere, comprising the following steps: S1. dispersing the template and the polyhydroxy biomass compound into an alcohol solution, adding a porogen, and performing a template-directed synthesis reaction to obtain an emulsion containing micelles; S2. adding an alcohol solution of an organic amine to the emulsion to perform an aggregation assembly reaction, followed by centrifugation and washing to obtain a hollow amino resin precursor material; S3. The hollow amino resin precursor material is added to the curing agent solution to perform a cross-linking curing reaction to obtain a cured material; S4. The solidified material is dispersed in a solvent and heated to react, thereby obtaining a hollow porous amino resin for separating CO2 from the atmosphere.

[0020] The reaction process of this application is as follows: The structure-directing agent, polyhydroxy biomass compound, and pore-forming agent in step S1 form a micellar structure with the pore-forming agent inside and the structure-directing agent-polyhydroxy biomass compound complex outside through mutual interaction. As time goes by, the polyhydroxy biomass compound continues to distribute at the micellar interface, forming a composite emulsion. In step S2, the surface energy of the micelles (emulsion droplets) in the composite emulsion is high, and it is necessary to adsorb substances from the outside to reduce the surface energy. Therefore, driven by the interfacial energy of the emulsion and the hydroxyl-amine group interaction, the organic amine aggregates and assembles at the interface of the composite emulsion and further reacts with the polyhydroxy compound to obtain nanoparticles with small particle sizes. As time goes by, large-sized nanoparticles with a core-shell structure are continuously formed, and the interfacial energy of the emulsion also continuously decreases and finally precipitates out. Then, after washing, the structure-directing agent and the pore-forming agent are removed, forming a hollow and porous amino resin precursor material. After the curing effect in step S3, the stability of the amino group can be ensured, and the shedding of the amino group can be avoided. Finally, in step S4, through low-temperature solvent heat treatment, the interaction between the amino group and the hydroxyl group changes from a hydrogen bond to a chemical bond, which more stably promotes the loading of the amino group in the material and prevents amine loss. It is worth mentioning that the morphology of the adsorbent will not change after solvent heat treatment and still exists in a hollow porous structure. In addition, the surface hydrophobicity of the material increases after solvent heat treatment, avoiding the decrease in adsorption capacity caused by excessive water absorption of the material.

[0021] The functions of the steps in this application are as follows: Step S1 provides a necessary environment for forming a hollow-structured amino resin and increasing the amino group loading amount. The organic amine in step S2 is loaded on the emulsion interface under the action of interfacial energy and hydroxyl groups and forms large-sized nanoparticles. Then, the structure-directing agent and the pore-forming agent are removed by washing, and then a hollow-structured amino resin precursor material with a large amino group loading amount is formed. The purposes of steps S3 and S4 are to prevent the loss of amino groups and the collapse of the hollow structure, and to increase the hydrophobicity of the material to overcome the defect of the decrease in adsorption amount caused by excessive washing. Among them, the structure-directing agent is amphiphilic, hydrophobic-hydrophilic. The hydrophilic group combines with the polyhydroxy compound; the internal hydrophobic group combines with the pore-forming agent to form a composite micelle. After the pore-forming agent is washed out by washing finally, a hollow structure is formed.

[0022] Therefore, through the cooperation of the steps in this application, a hollow porous amino resin with a large and stable amino group loading amount is finally obtained, thus ensuring the amino group loading amount and its stability. The mesoporous structure can overcome the defect of the blockage of the internal pore structure of solid amine caused by the increase in amino group loading amount, improve the adsorption rate of the material, and finally achieve the effect that the hollow porous amino resin takes into account the adsorption capacity, adsorption rate, and adsorption stability of solid amine.

[0023] In some embodiments, the template agent includes one or more of F127, P123, and AEO9; and / or, the pore-forming agent includes one or more of mesitylene and N,N-dimethylbenzylamine; and / or, the polyhydroxy biomass compound includes one or more of tannic acid, catechol, and gallic acid.

[0024] Among them, F127 and P123 are poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide); AEO9 is fatty alcohol polyoxyethylene ether.

[0025] In this application, the polyhydroxy compound has the following characteristics: 1. It is a biomass derivative, which is beneficial to reducing the environmental load of material preparation and realizing the utilization of renewable resources; 2. It has rich hydroxyl sites, which is beneficial to increasing the loading amount of amino groups; 3. It has a benzene ring, which is beneficial to improving the framework stability through π-π conjugation; 4. It contains phenolic hydroxyl groups, which is beneficial to forming hydrogen bonds with the template agent and can also have π-electron interaction with the pore-forming agent. The template agent has the following characteristics: 1. It is an amphiphilic macromolecule with a polyether group and can form strong hydrogen bonds with the polyhydroxy compound; 2. It has a hydrophobic alkyl chain segment (such as the polypropylene chain of F127, the polypropoxy chain of P123, and the C9 alkyl chain of AEO9), and this hydrophobic chain segment can be assembled synergistically with the long alkane chain of the pore-forming agent through hydrophobic interaction. At the same time, using the hydrophilic-hydrophobic microphase separation characteristics of its block structure, it induces the formation of micelles with an ordered core-shell structure, which is beneficial to synergistically inducing the formation of micelles with a specific structure with the pore-forming agent. The pore-forming agent has the following characteristics: It is a hydrophobic organic compound, and its typical characteristic is that the molecule contains a long alkane chain and an aromatic structure and is hydrophobic. In the Kamlet-Taft parameters, the β value is greater than 0.1, and the π* value is close to 0.4. It is beneficial to enhance the aggregation degree of the micelle core through the hydrophobic association of the long alkane chain, and at the same time use the π-π stacking of the aromatic structure to stabilize the micelle interface, and adjust the polarity matching degree between the micelle and the polyhydroxy compound through the hydrogen bond acceptor ability corresponding to the β value, and precisely control the microphase separation degree of the micelle in combination with the medium polarity characteristics of the π value. Therefore, the template agent, pore-forming agent, and polyhydroxy biomass compound in this application cooperate with each other. The polyhydroxy compound and the pore-forming agent form emulsion droplets (micelles) through hydrophobic interaction and π-electron interaction respectively, and the template agent and the polyhydroxy compound interact through strong hydrogen bonds. Under multiple forces, an emulsion containing micelles can be formed, and the structure of the micelles is an ordered porous core-shell structure.

[0026] In some embodiments, the organic amine includes one or more of tetraethylenepentamine, pentaethylenehexamine, triethylenetetramine, and polyethyleneimine.

[0027] In some embodiments, in step S2, the washing step is: washing alternately with ethanol and water.

[0028] The removal of the porogen and the templating agent is achieved through the washing step of this application to form a hollow and porous-structured material.

[0029] In some embodiments, the molar ratio of the porogen to the polyhydroxy biomass compound is 0.01 - 0.1:1; the molar ratio of the porogen to the alcohol solution is 1 - 5:500; the molar ratio of the templating agent to the porogen is 1 - 10:1.

[0030] In this application, the size of the emulsion droplets is regulated by controlling the amounts of the porogen, the organic solvent, and the ratio of the porogen to the polyhydroxy compound, thereby precisely controlling the pore structure of the material. Among them, under the condition of defining the molar ratio of the porogen to the polyhydroxy biomass compound, it is beneficial to regulate the size of the micelle core through the volume effect of the hydrophobic microdomain of the porogen. If the porogen is relatively too high, excessive aggregation of micelles will occur due to excessive hydrophobic interaction, forming aggregates with non-uniform cavity structures. If the porogen is relatively too low, the hydrophobic driving force of the micelle core is insufficient, resulting in the collapse of the mesoporous structure or too small pore diameters; under the condition of defining the molar ratio of the porogen to the alcohol solution, it is beneficial to regulate the solvation of the micelle interface through the polarity of the alcohol solution. If the porogen is relatively too high, the uniformity of the micelle structure will be destroyed. If the porogen is relatively too low, the expansion of the micelles is limited, resulting in the densification of the mesoporous structure; under the condition of defining the molar ratio of the templating agent to the porogen, it is beneficial to form a stable core-shell structure through the hydrophobic-hydrophilic synergistic effect between the polyether chain segment of the templating agent and the porogen. If the porogen is relatively too high, the templating agent shell layer is not sufficient to wrap the porogen core, resulting in the instability of the micelle structure. If the porogen is relatively too low, excessive hydrogen bond cross-linking between micelles is caused by the excessive amount of the templating agent, resulting in pore blockage.

[0031] In some embodiments, the temperature of the template-directed synthesis reaction is 25 - 45 °C.

[0032] In some embodiments, the temperature of the aggregation and assembly reaction is 25 - 65 °C.

[0033] In some embodiments, the temperature of the curing reaction is 30 - 60 °C, and the curing agent includes one or more of formaldehyde, glutaraldehyde, and paraformaldehyde; the temperature of the heating reaction is 80 - 140 °C.

[0034] In this application, under the condition of defining the parameters of the aggregation and assembly reaction, it is beneficial to accelerate the assembly efficiency of the amino resin precursor on the surface of the micelles. If the temperature is too low, the reaction rate is too slow, and if the temperature is too high, some side reactions such as oxidation will occur.

[0035] This application provides a hollow and porous amino resin for separating CO2 from the atmosphere.

[0036] The hollow porous amino resin of the present application has a hollow porous nanoparticle structure with a particle size of 100 - 800 nm, an average pore size of the porous structure of 10 - 30 nm, and a size of the hollow channel of 50 - 300 nm. The size of the amino resin is regulated by optimizing the composite micelle structure or emulsion structure. The core is that the template agent and pore-forming agent synergistically regulate the size of the micelle, thereby regulating the size of the cavity of the amino resin. By controlling the concentrations of biomass hydroxyl compounds and organic amines, the assembly of the amino resin on the surface of the micelle is achieved, and further the thickness of the hollow shell of the material and the size of the amino resin particles are regulated.

[0037] The present application provides an application of a hollow porous amino resin for separating CO2 in the atmosphere in capturing CO2 in the air.

[0038] The following further illustrates this solution through specific examples.

[0039] Example 1 A preparation method of a hollow porous amino resin for separating CO2 in the atmosphere includes the following steps: S1. Dissolve F127 and tannic acid in a 100 ml solution of 50% ethanol. After stirring at 25°C for 3 h, add mesitylene and carry out a template-directed synthesis reaction to obtain an emulsion containing micelles; the molar ratio of mesitylene to tannic acid is 0.05, the molar ratio of F127 to mesitylene is 5:1, and the molar ratio of mesitylene to the alcohol solution is 2:500; S2. Dissolve triethylenetetramine in 10 ml of ethanol, and then add it to the emulsion containing micelles obtained in step S1. Carry out an aggregation assembly reaction at 35°C, and then centrifuge. The precipitate is washed thoroughly with ethanol and water to obtain a hollow amino resin precursor material; the molar ratio of triethylenetetramine to tannic acid is 5:1; S3. Disperse 100 ml of the hollow amino resin precursor material in an aqueous ethanol solution of 50 wt%, and then add it to a glutaraldehyde solution as a curing agent. Carry out a cross-linking curing reaction at 40°C to obtain a cured material; S4. Disperse the cured material in an aqueous ethanol solution of 50 wt% with a solid-liquid ratio of 1:10, heat and react at 100°C for 24 h, and then wash with water, filter, and vacuum dry to obtain the hollow porous amino resin for separating CO2 in the atmosphere.

[0040] Example 2 A preparation method of a hollow porous amino resin for separating CO2 in the atmosphere, other contents are the same as those in Example 1, the difference is that F127 is replaced by P123; mesitylene is replaced by N,N-dimethylbenzylamine; tannic acid is replaced by catechol; triethylenetetramine is replaced by tetraethylenepentamine.

[0041] Examples 3 - 4 A preparation method of a hollow porous amino resin for separating CO2 from the atmosphere, other contents are the same as those in Example 1, the difference is that the molar ratios of the pore-forming agent to the polyhydroxy biomass compound are 0.01:1 and 0.1:1 in sequence.

[0042] Examples 5 - 6 A preparation method of a hollow porous amino resin for separating CO2 from the atmosphere, other contents are the same as those in Example 1, the difference is that the molar ratios of the pore-forming agent to the alcohol solution are 1:500 and 5:500.

[0043] Examples 7 - 8 A preparation method of a hollow porous amino resin for separating CO2 from the atmosphere, other contents are the same as those in Example 1, the difference is that the molar ratios of the template agent to the pore-forming agent are 1:1 and 10:1.

[0044] Examples 9 - 10 A preparation method of a hollow porous amino resin for separating CO2 from the atmosphere, other contents are the same as those in Example 1, the difference is that the template-directed synthesis reaction temperatures are 10 and 60 °C.

[0045] Examples 11 - 12 A preparation method of a hollow porous amino resin for separating CO2 from the atmosphere, other contents are the same as those in Example 1, the difference is that the temperatures of the aggregation assembly reaction are 10 and 60 °C.

[0046] Example 13 A preparation method of a hollow porous amino resin for separating CO2 from the atmosphere, other contents are the same as those in Example 1, the difference is that the reaction temperature is 160 °C.

[0047] Comparative Example 1 A preparation method of an amino resin, other contents are the same as those in Example 1, the difference is that step S3 is not included.

[0048] Comparative Example 2 A preparation method of an amino resin, other contents are the same as those in Example 1, the difference is that step S4 is not included.

[0049] Comparative Example 3 A preparation method of an amino resin, other contents are the same as those in Example 1, the difference is that in step S1, the template agent is not used.

[0050] Comparative Example 4 A preparation method of an amino resin, other contents are the same as those in Example 1, the difference is that in step S1, the polyhydroxy biomass compound is not used.

[0051] Comparative Example 5 A preparation method of an amino resin, the other contents are the same as those in Example 1, the difference is that in step S1, a template agent and a polyhydroxy biomass compound are not used.

[0052] Comparative Examples 6 - 7 A preparation method of an amino resin, the other contents are the same as those in Example 1, the difference is that the template agent is sequentially replaced with CTAB and sodium dodecyl sulfate.

[0053] Comparative Examples 8 - 9 A preparation method of an amino resin, the other contents are the same as those in Example 1, the difference is that the pore - forming agent is sequentially replaced with hexadecane and benzene.

[0054] Testing and Evaluation Test the SEM images of different amino resins. The SEM of the amino resin obtained in Example 1 is as Figure 1 shown.

[0055] Test the cavity diameter and amine loading amount of different amino resins, and test the CO2 adsorption amount, average adsorption rate and cycle stability of different amino resins at 25°C. The results are shown in Table 1.

[0056] Table 1 Test Results

[0057] The adsorbent materials prepared in Examples 1 and 2 have good performance, which benefits from the better process ratio. In Example 3, there is too much polyhydroxy compound, resulting in the compression of the hollow cavity and the decrease of the adsorption rate; while in Example 4, there is too little polyhydroxy compound, resulting in the decrease of the organic amine loading amount and the adsorption capacity. Too much or too little alcohol content will lead to too low or too high concentration of the template agent, thus affecting the size of the hollow cavity. Too small a cavity size leads to a slow adsorption rate (Example 5), and too large a cavity size leads to easy fragmentation of the material and poor cycle stability (Example 6). Too much or too little template agent will also lead to similar situations (Examples 7 and 8).

[0058] In Examples 9 and 11, the reaction temperature is too low, resulting in a low organic amine loading amount and a low adsorption capacity. While in Examples 10, 12 and 13, the reaction temperature is too high, which is prone to over - reaction, causing partial oxidation of amine functional groups, a small content of effective adsorption groups, and a decrease in the adsorption capacity.

[0059] In Comparative Examples 1 and 2, the curing and heat treatment parts are lacking, the amino functional graph is unstable, and although the adsorption capacity is high, the cycle stability is poor. In Comparative Example 3, without adding a template agent, a solid structure material is obtained, and the adsorption rate is relatively slow. In Comparative Examples 4 and 5, no solid material is formed. In Comparative Examples 6 and 7, the template agent is replaced with anionic and cationic surfactants, and it is difficult to form micelles with a core-shell structure. The cavity structure of the material is small and the adsorption rate is slow. When the pore-forming agent is replaced with hydrophobic alkyl and benzene with smaller sizes, the formed micelles have smaller sizes, and the cavity structure of the material is also relatively small, and the adsorption rate is slow.

[0060] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A preparation method of a hollow porous amino resin for separating CO2 from the atmosphere, characterized in that, It includes the following steps: S1. Disperse the template agent and the polyhydroxy biomass compound into an alcohol solution, then add the pore-forming agent and carry out a template-directed synthesis reaction to obtain an emulsion containing micelles; S2. Add an alcohol solution of organic amine to the emulsion, carry out an aggregation and assembly reaction, and then centrifuge and wash to obtain a hollow amino resin precursor material; S3. Add the hollow amino resin precursor material to a curing agent solution and carry out a cross-linking and curing reaction to obtain a cured material; S4. Disperse the cured material in a solvent and carry out a heating reaction to obtain the hollow porous amino resin for separating CO2 in the atmosphere.

2. The preparation method of the hollow porous amino resin for separating CO2 in the atmosphere according to claim 1, characterized in that, The template agent includes one or more of F127, P123, and AEO9; and / or, the pore-forming agent includes one or more of mesitylene and N,N-dimethylbenzylamine; and / or, the polyhydroxy biomass compound includes one or more of tannic acid, catechol, and gallic acid.

3. The preparation method of the hollow porous amino resin for separating CO2 in the atmosphere according to claim 1, wherein The organic amine includes one or more of tetraethylenepentamine, pentaethylenehexamine, triethylenetetramine, and polyethyleneimine.

4. The preparation method of the hollow porous amino resin for separating CO2 in the atmosphere according to claim 1, characterized in that, In step S2, the washing step is: wash alternately with ethanol and water.

5. The preparation method of the hollow porous amino resin for separating CO2 from the atmosphere according to claim 1, characterized in that, The molar ratio of the pore-forming agent to the polyhydroxy biomass compound is 0.01-0.1:1; the molar ratio of the pore-forming agent to the alcohol solution is 1-5:500; the molar ratio of the template agent to the pore-forming agent is 1-10:

1.

6. The preparation method of the hollow porous amino resin for separating CO2 in the atmosphere according to claim 1, characterized in that, The temperature of the template-directed synthesis reaction is 25-45°C.

7. The preparation method of the hollow porous amino resin for separating CO2 in the atmosphere according to claim 1, characterized in that, The temperature of the aggregation and assembly reaction is 25-65°C.

8. The preparation method of the hollow porous amino resin for separating CO2 from the atmosphere according to claim 1, characterized in that The temperature of the curing reaction is 30-60°C, and the curing agent includes one or more of formaldehyde, glutaraldehyde, and paraformaldehyde; the temperature of the heating reaction is 80-140°C.

9. A hollow porous amino resin for separating CO2 in the atmosphere obtained by the preparation method according to any one of claims 1-8.

10. Application of a hollow porous amino resin for separating CO2 in the atmosphere according to claim 9 in capturing CO2 in the air.

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