KR20200064698A - Organic-inorganic nanoporous material adsorbent and method for manufacturing the same - Google Patents

Abstract

A method of manufacturing an organic-inorganic nanoporous material of the present invention includes the steps of: manufacturing an organic-inorganic nanoporous material precursor by mixing an aluminum precursor, one or more types of unsaturated dicarboxylic acids, and water; and manufacturing a product by crystallizing the organic-inorganic nanoporous material precursor.

Description

Organic-inorganic nanoporous material adsorbent and its manufacturing method{Organic-inorganic nanoporous material adsorbent and method for manufacturing the same}

The present invention relates to an organic-inorganic nanoporous material adsorbent and a method for manufacturing the same. More specifically, it relates to an organic-inorganic nanoporous material adsorbent prepared by reacting an aluminum precursor, fumaric acid, and itaconic acid at the same time, and a method for manufacturing the same.

The adsorption refrigeration system is a refrigeration method that has attracted worldwide attention in terms of non-freonization and waste heat utilization in addition to the absorption refrigeration system. Since the early 1980s, refrigeration systems using adsorption have been applied with natural refrigerants such as water, alcohol, and ammonia, and adsorbents such as silica gel, zeolite, and activated carbon.

Silica gel and water are used in conventional commercial adsorption refrigeration systems, but silica gel tends to start adsorption at low water vapor partial pressure due to its strong hydrophilicity. In addition, the adsorption rate in the driving pressure range on the adsorption refrigeration system (P/P0 = 0.1 to 0.3) is slow, the adsorption is not easy, and the amount of water adsorbed per unit adsorbent is 0.1 g-water/g-sorbent (g-water/ g-sorbent: considerably low as the number of grams of water absorbed per gram of adsorbent). In addition, the moisture adsorbents used in commercial desiccant dehumidifiers, adsorption heat pumps, dehumidifying rotors, air conditioners, and the like mainly include porous silica and zeolites. There is a need for research and development on a novel porous moisture adsorbent that can reach the limit of adsorption and replace it. That is, in order to improve the performance of a device including an adsorption type refrigeration system, desiccant type dehumidifier, and adsorption type heat pump, and to reduce maintenance costs, research and development on a new moisture adsorption composition with a higher water adsorption amount within the driving pressure range is conducted. This is a need.

On the other hand, organic and inorganic nanoporous materials have attracted attention as a material that can replace silica gel or zeolite, which is a porous structure. Typically, metals easily generate coordination compounds at room temperature with organic ligands having non-covalent electron pairs, and these coordination compounds are polymerized under water or an organic medium to form a three-dimensional framework. Compounds such as these are generally referred to as "metal-organic frameworks (MOFs)", and some compounds have nano-sized pores while forming a three-dimensional framework and are also referred to as "organic-organic nanopores" In addition, the organic-inorganic nanoporous material can be applied to various fields by variously modifying the structure according to the coordination number of the metal ion and the type of the organic ligand compound, and has a surface area of up to 3 to 15 times greater than that of zeolite. In addition, there is an advantage in that it is easy to impart reactivity and adsorption selectivity due to the presence of an unsaturated metal ion site not present in a zeolite made of an inorganic metal.

Related to the Republic of Korea Patent Publication No. 2011-0019804 relates to a method of manufacturing an organic-inorganic hybrid nanoporous material and the application of an adsorbent of the organic-inorganic hybrid nanoporous material, an aluminum salt as an aluminum precursor and a tree (C ₁ -C ₇ ) It provides a method of preparing an organic-inorganic hybrid nanoporous material by reacting alkyl-1,3,5-benzenetricarboxylate, and tri(C ₁ -C ₇ )alkyl-1,3,5- as an organic ligand. Disclosed is a method for synthesizing pure organic-inorganic hybrid nanopores by increasing the solubility using benzenetricarboxylate, and the use of the prepared organic-inorganic hybrid nanopores as adsorbents for various gases and moisture. .

The above document provides a technique for the synthesis of an organic-inorganic hybrid nanoporous material having improved crystallinity and its use as an adsorbent, however, the specifications required for practical application of the adsorbent or the prepared organic-inorganic hybrid nanoporous material industrially No technology has been disclosed for manufacturing in an applicable form.

Republic of Korea Patent Publication No. 10-2011-0019804

One technical problem to be achieved by the present invention is to overcome the limitations of the water adsorption capacity of the conventional water adsorbent and to provide a water adsorbent in the form that can be practically applied in related fields and a method for manufacturing the same.

Another technical problem to be achieved by the present invention is to provide a novel use of the water adsorbent as a carbon dioxide adsorbent.

The technical problem to be achieved by the present invention is not limited to the technical problems mentioned above, and other technical problems not mentioned can be clearly understood by those skilled in the art from the following description. There will be.

In order to achieve the above technical problem, an aspect of the present invention comprises the steps of preparing an organic-inorganic nanoporous precursor by mixing an aluminum precursor, one or more unsaturated dicarboxylic acids and water; And crystallizing the precursor of the organic-inorganic nanoporous material to prepare a product.

According to an embodiment of the present invention, the aluminum precursor is a group consisting of aluminum nitrate (Al(NO ₃ ) ₃ ), aluminum chloride (AlCl ₃ ), aluminum sulfate (Al ₂ (SO ₄ ) ₃ ), and hydrates thereof It may include one or more selected from.

According to an embodiment of the present invention, the molar ratio of the aluminum precursor to the at least one unsaturated dicarboxylic acid may be provided in 0.5:1 to 1.5:1.

According to an embodiment of the present invention, the at least one unsaturated dicarboxylic acid may be a mixture of fumaric acid and itaconic acid.

According to an embodiment of the present invention, the molar ratio of the fumaric acid and the itaconic acid in the mixture may be provided as 100:0 to 50:50.

According to an embodiment of the present invention, the organic/inorganic nanoporous precursor may further include urea.

According to an embodiment of the present invention, the element may be provided from 0.5 to 5 times based on the number of moles of the aluminum precursor. According to one embodiment of the present invention, the crystallization may be performed for 12 hours to 40 hours at a temperature of 100 ℃ to 200 ℃.

According to an embodiment of the present invention, the product may further include filtering, purifying, and drying.

According to an embodiment of the present invention, the average diameter of the organic-inorganic nanoporous body may be 100 nm to 20,000 nm, and the average diameter of the pores may be 0.3 nm to 1.5 nm.

Another aspect of the present invention provides an organic-inorganic nanoporous body manufactured by the above manufacturing method.

Another aspect of the present invention provides a gas adsorbent comprising the organic-inorganic nanoporous material.

According to an embodiment of the present invention, the gas may be selected from the group consisting of moisture, carbon dioxide, and combinations thereof.

According to an embodiment of the present invention, the gas adsorbent may have a maximum water adsorption amount of 150 mg/g or more in a range of driving pressure P/P ₀ =0.1 to 0.3.

According to an embodiment of the present invention, the gas adsorbent may have a maximum carbon dioxide adsorption amount of 0.5 mmol/g or more at 1 atm or less.

In the method of manufacturing an organic-inorganic nanoporous body according to an embodiment of the present invention, the manufacturing method of the adsorbent can be reduced to reduce process cost and improve process efficiency.

In addition, the organic-inorganic nanoporous adsorbent prepared according to an embodiment of the present invention has an improved water adsorption ability compared to a single material, and not only improves cooling and refrigeration efficiency, but also contributes to miniaturization and high performance of cooling and refrigeration systems, etc. Can be.

Meanwhile, the organic-inorganic nanoporous adsorbent prepared according to an embodiment of the present invention also adsorbs carbon dioxide, and thus can be used as an adsorbent for carbon dioxide treatment.

It should be understood that the effects of the present invention are not limited to the above-described effects, and include all effects that can be deduced from the configuration of the invention described in the detailed description or claims of the present invention.

1 is a flowchart schematically showing a method of manufacturing an organic-inorganic nanoporous adsorbent according to an embodiment of the present invention.
2 is XRD data of an organic-inorganic nanoporous material adsorbent (Al-FuIt MOF) according to an embodiment of the present invention.
3 is an SEM image of the surface of an organic-inorganic nanoporous material adsorbent (Al-FuIt MOF) according to an embodiment of the present invention.
4 is TGA data of an organic-inorganic nanoporous material adsorbent (Al-FuIt MOF) according to an embodiment of the present invention.
5 is an analysis result of moisture adsorption characteristics of an organic-inorganic nanoporous adsorbent (Al-FuIt MOF) according to an embodiment of the present invention.
6 is an analysis result of adsorption characteristics of carbon dioxide (CO ₂ ) of an organic-inorganic nanoporous adsorbent (Al-FuIt MOF) according to an embodiment of the present invention.
7 is an analysis result of adsorption characteristics of nitrogen (N ₂ ) of an organic-inorganic nanoporous material adsorbent (Al-FuIt MOF) according to an embodiment of the present invention.

Hereinafter, the present invention will be described with reference to the accompanying drawings. However, the present invention may be implemented in various different forms, and thus is not limited to the embodiments described herein.

Throughout the specification, when a part “includes” a certain component, this means that other components may be further provided instead of excluding the other component, unless specifically stated to the contrary.

The terms used herein are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this specification, terms such as “include” or “have” are intended to indicate that a feature, number, step, operation, component, part, or combination thereof described in the specification exists, and that one or more other features are present. It should be understood that the existence or addition possibilities of fields or numbers, steps, operations, components, parts or combinations thereof are not excluded in advance.

One aspect of the present invention provides an organic-inorganic nanoporous material manufacturing method.

Referring to Figure 1, the organic-inorganic nanoporous material manufacturing method according to an embodiment of the present invention comprises the steps of preparing an organic-inorganic nanoporous material precursor by mixing an aluminum precursor, at least one unsaturated dicarboxylic acid, urea and water ( S110), a step of preparing a product by crystallizing the organic/inorganic nanoporous precursor (S120) and filtering, purifying, and drying the product (S130).

First, an organic/inorganic nanoporous precursor is prepared by mixing an aluminum precursor, one or more unsaturated dicarboxylic acids, urea, and water (S110).

The term "aluminum precursor" as used herein is selected from the group consisting of aluminum nitrate (Al(NO ₃ ) ₃ ), aluminum chloride (AlCl ₃ ), aluminum sulfate (Al ₂ (SO ₄ ) ₃ ) and hydrates thereof. It may include one or more, but is not limited thereto.

The reactant with the organic-inorganic nanoporous precursor may be an organic ligand and an unsaturated dicarboxylic acid. For example, the mixture of unsaturated dicarboxylic acids may be monoethylenically unsaturated dicarboxylic acids containing 4 to 10 carbon atoms per molecule, for example 4 to 6 carbon atoms.

For example, the unsaturated dicarboxylic acid may be a mixture of one or more different unsaturated dicarboxylic acids, specifically, fumaric acid, itaconic acid, maleic acid, mesaconic acid, citraconic acid, alpha-methylene glutaric acid Combinations of these, including, but not limited to, fumaric acid, fumaric acid and itaconic acid, including one or more selected from the group consisting of acids and their anhydrides. The unsaturated dicarboxylic acid enables reaction in water, and thus can be more environmentally friendly, and may be effective in forming a more robust organic/inorganic nanoporous material.

The fumaric acid and itaconic acid are clean porous materials that can be synthesized at low cost from organic acids derived from biomass, for example, glucose, which are advantageous for cost reduction and environmental protection.

The molar ratio of the fumaric acid and the itaconic acid is 100:0 to 50:50, for example 99:1 to 50:50, for example 94:6 to 50:50, for example 94:6 to 75 It can be provided as :25. When the molar ratio of the fumaric acid and the itaconic acid is greater than 50:50, a polymer having no nanopores of different structures may be formed, thereby degrading adsorption performance.

Other reactants with the organic-inorganic nanoporous precursor may be urea.

The molar ratio of the aluminum precursor to the at least one unsaturated dicarboxylic acid may be provided from 0.5:1 to 1.5:1. When the molar ratio is less than 0.5:1 or more than 1.5:1, a polymer having no nanopores of different structures is formed, and thus the adsorption performance is deteriorated, and it is difficult to control the average size of the organic-inorganic nanopores and the average size of pores. Do.

The term “urea” as used herein is a compound of CO(NH ₂ ) ₂ and functions as a base modulator. The urea is hydrolyzed to NH ₃ and CO ₂ at around 100° C., and the generated NH ₃ is dissolved in water and serves as a base regulator. The NH ₃ may finally react with an SO ₄ ^2- ion of an aluminum precursor, for example, Al ₂ (SO ₄ ) ₃ to form (NH ₄ ) ₂ SO ₄ as a reaction by-product. The use of the above elements makes it possible to manufacture organic and inorganic nanoporous materials without the use of organic solvents and/or strong base materials. The urea, for example, may be provided in 0.5 to 5 times, for example, 1 to 3 times based on the number of moles of the aluminum precursor, the gas adsorption capacity of the final product (adsorbent) by the content ratio of urea, etc. Performance and yield can be adjusted.

Next, the organic-inorganic nanoporous material precursor is crystallized to prepare a product (S120).

In the present invention, the organic-inorganic nanoporous material is a porous organic-inorganic polymer compound formed by bonding a central metal with an organic ligand, and is a crystalline compound containing both organic and inorganic substances in a skeleton structure and having a pore structure of a molecular size or a nano size. .

For example, the organic-inorganic nanoporous material of the present invention is formed by a crystallization reaction of an aluminum precursor and one or more unsaturated dicarboxylic acids that are organic ligands, for example, fumaric acid and itaconic acid, and is a porous pore for adsorbing water. Small pores can be formed compared to zeolite or silica to have a large specific surface area. In addition, there is an object to improve the moisture absorption characteristics compared to a single material by doping a metal chloride having hygroscopicity in the pores of an organic-inorganic nanoporous body having characteristics of adsorbing moisture in a porous body.

The crystallization may be performed at a temperature of 100 ℃ to 200 ℃. The crystallization step may be a step of growing into organic-inorganic nanoporous structures from fumaric acid and itaconic acid coordinated to aluminum. If the reaction temperature in the above step is less than 100 ℃, the reaction rate is slow, the reaction time becomes longer, the process efficiency may be lowered, and if it exceeds 200 ℃, it may be difficult to form an organic-inorganic nanoporous body of the desired conditions It is not preferable because the reaction rate is fast, so that impurities can be easily mixed and the purity can be lowered.

In addition, the crystallization may be performed for 12 to 40 hours in the temperature range.

The crystallization may be performed at a predetermined pressure, for example, 1 bar to 100 bar, when a separate pressure process is not performed, and may be performed at 1 bar to 20 bar when a pressure process is performed in the middle of the reaction.

Next, the product is filtered, purified, and dried (S130).

The drying may be performed at a temperature of 100 ℃ to 200 ℃. When the drying temperature is less than 100°C, evaporation of the solvent may be insufficient, and when it exceeds 200°C, there may be a problem of using more energy than necessary, which may be undesirable.

The average size of the organic-inorganic nanoporous body may be 100 nm to 20,000 nm, and the average diameter of the pores may be 0.3 nm to 1.5 nm. The porous body for adsorption increases the specific surface area as the particle size decreases, indicating a tendency to increase the amount of water adsorption per unit weight of the adsorbent. When the particle size is less than 100 nm, the surface energy increases and the cohesiveness between particles increases, resulting in uniformity in the solvent. It can be difficult to disperse. In addition, when the particle size exceeds 20,000 nm, it may be limited in improving the moisture adsorption properties in a desired driving pressure range due to a decrease in specific surface area.

In addition, for example, organic/inorganic nanopores have a large number of nano-level pores due to regular binding of metal ions and organic ligands, and have the feature of adsorbing gas molecules containing moisture to nano-sized pores. . Therefore, as the pore size formed in the organic-inorganic nanoporous body becomes smaller, as the specific surface area of the water adsorbent increases, the water adsorption amount and water adsorption rate per unit weight of the water adsorbent can be maximized. For this reason, the smaller the size of the pores provided in the organic-inorganic nanoporous particles, the more it tends to exhibit advantageous properties as an adsorbent. However, when the pore size is less than 0.3 nm, the pore size is excessively small, and thus the water permeability decreases, so that the water adsorption performance may deteriorate. When the pore size exceeds 1.5 nm, the purpose is to reduce the specific surface area. The adsorption performance may be limited.

Next, the dried product is crushed and vacuum dried to remove excess moisture present in the crushed product.

For example, an organic-inorganic nanoporous structure adsorbent tends to adsorb more gas as the surface area is larger. Therefore, in order to maximize the moisture adsorption characteristics, it is preferable to perform a process of crushing the product for a predetermined time using a crusher. In addition, in the step of preparing the organic/inorganic nanoporous body by vacuum drying the crushed powder, it is a step to further improve the gas adsorption properties by completely removing the excess moisture contained in the organic/inorganic nanoporous material through a vacuum dryer.

One aspect of the present invention provides an organic-inorganic nanoporous body manufactured by the method of manufacturing the organic-inorganic nanoporous body.

The organic-inorganic nanoporous material of the present invention has a pore structure formed by a crystallization reaction of an aluminum precursor and an organic ligand, and forms a small pore as compared to a zeolite or silica, which is a porous gas adsorption pore, and has a large specific surface area, as well as gas adsorption properties. It may be an improved organic/inorganic nanostructure. In addition, the metal is doped between the pores may be an organic-inorganic nanoporous material having improved gas adsorption properties.

Particularly, the organic/inorganic nanoporous material may be a mixture of one or more unsaturated dicarboxylic acids, for example, fumaric acid and itaconic acid (including a pure material), as an organic ligand, which is obtained from glucose extracted from biomass. Since the conversion technology of is known, it can be manufactured in an environmentally friendly manner at a lower cost, and can form an organic/inorganic nanoporous body doped with a more robust metal.

An aspect of the present invention provides a gas adsorbent comprising an organic-inorganic nanoporous body manufactured by the method of manufacturing the organic-inorganic nanoporous body.

The term "gas" used in the present invention may be any one selected from the group consisting of moisture, carbon dioxide, and combinations thereof, but is not limited thereto.

In one embodiment of the present invention, the gas adsorbent has a maximum water adsorption amount of 150 mg/g or more, for example, 300 mg/g or more, for example, in the range of driving pressure P/P ₀ =0.1 to 0.3 450 mg/g or more.

In one embodiment of the present invention, the gas adsorbent adsorbent may have a maximum carbon dioxide adsorption amount of 0.5 mmol/g or more, for example, 1 mmol/g or more, for example, 3 mmol/g or more at 1 atmosphere or less.

Hereinafter, production examples and experimental examples of the present invention will be described. However, these preparation examples and experimental examples are intended to illustrate the configuration and effects of the present invention in more detail, and the scope of the present invention is not limited thereto.

Example

Example 1. Preparation of organic and inorganic nanoporous gas adsorbent

Aluminum sulfate (Al ₂ (SO ₄ ) _3· 18H ₂ O) 1.33 g (2.1 mmol), itaconic acid 0.26 g (2.0 mmol), fumaric acid 0.23 g (2.0 mmol) and urea 0.24 g (4 mmol) in water 13.94 g And dissolved in. The mixture was stirred for 5 minutes, introduced into an autoclave reactor, reacted at 110° C. for 32 hours, and then cooled to room temperature. After the reaction was completed, the product was filtered and purified with deionized water and ethanol, and then dried in an oven at 100°C overnight. The dried product was crushed and vacuum dried to obtain an organic-inorganic nanoporous gas adsorbent (AFI-50).

From the SEM image of the X-ray diffraction (XRD) shape and surface of the obtained gas adsorbent, it was confirmed that crystals were well formed (FIGS. 2 and 3 (a)).

Examples 2 to 6. Preparation of organic and inorganic nanoporous gas adsorbent

When preparing the mixture in Preparation Example 1, except for having the composition according to Table 1, it was performed in the same manner as in the method described in Preparation Example 1 to obtain an organic-inorganic nanoporous gas adsorbent.

Each of the obtained gas adsorbents was confirmed that crystals were well formed from X-ray diffraction (XRD) morphology and SEM images of the surfaces ((b) to (f) of FIGS. 2 and 3).

Comparative Examples 1 and 2. Preparation of organic and inorganic nanoporous gas adsorbent

When preparing the mixture in Preparation Example 1, except for having a composition according to Table 1 below, the organic-inorganic nanoporous gas adsorbent using a single dicarboxylic acid organic ligand was performed in the same manner as described in Preparation Example 1 Was obtained.

Each of the obtained gas adsorbents was able to confirm that crystals were well formed from SEM images of X-ray diffraction (XRD) morphology and surface (FIGS. 2 and 3 (g) and (h)).

Example 2
(AFI-25) Example 3
(AFI-19) Example 4
(AFI-15) Example 5
(AFI-10) Example 6
(AFI-6) Comparative Example 1
(AI) Comparative Example 2
(AF) Aluminum sulfate (Al- ₂ (SO ₄ ) ₃ · 18H ₂ O) 1.33 g 1.33 g 1.33 g 1.33 g 1.33 g 1.33 g 1.33 g Itaconic acid 0.13 g 0.10 g 0.08 g 0.05 g 0.03 g 0.52 g - Fumaric acid 0.35 g 0.37 g 0.39 g 0.41 g 0.43 g - 0.46 g Element 0.24 g 0.24 g 0.24 g 0.24 g 0.24 g 0.24 g 0.24 g water 13.94 g 13.95 g 13.96 g 13.96 g 13.97 g 13.91 g 13.97 g sum 15 g 15 g 15 g 15 g 15 g 15 g 15 g

Experimental Example 1. TGA analysis of organic/inorganic nanostructures

To the temperature of the gas adsorbent obtained in Examples 1 to 6 (AFI-50, AFI-25, AFI-19, AFI-15, AFI-10 and AFI-6) and Comparative Examples 1 and 2 (AI, AF) To observe the change in weight loss according to TGA Q5000 (TA Instruments, USA) was measured while heating at a rate of 10 ℃ / min with N ₂ to 600 ℃.

The TGA curves of the eight gas adsorbents are shown in FIG. 4. Referring to FIG. 4, it was confirmed that the moisture adsorbed at the time of heating up to around 100° C. was desorbed, and that thermal stability was maintained to around 400° C.

Experimental Example 2. Confirmation of moisture adsorption properties of organic and inorganic nanoporous materials

The moisture adsorption isotherm analysis was performed at 25° C. to determine the water adsorption characteristics according to the mixing ratio of itaconic acid and fumaric acid in the organic/inorganic nanoporous gas adsorbents obtained in Examples 2, 3, 5 and 6, and Comparative Examples 1 and 2. It was carried out, the results are shown in Figure 5.

5, in the range of the driving pressure P / P0 = 0.1 to 0.3, 400 mg / g for the adsorbent obtained in Example 2, 420 mg / g for the adsorbent obtained in Examples 3 and 6, and In the case of the adsorbent obtained in Example 5, it exhibited a water adsorption property of 470 mg/g, and was confirmed to have significantly improved water adsorption properties compared to the organic-inorganic nanoporous material of Comparative Example 1 in which the maximum water adsorption amount was only 50 mg/g.

Experimental Example 3. Confirmation of CO2 adsorption properties of organic and inorganic nanoporous materials

Carbon dioxide adsorption isotherm analysis was carried out at 25° C. to investigate the carbon dioxide adsorption characteristics according to the mixing ratio of itaconic acid and fumaric acid in the organic/inorganic nanoporous gas adsorbents obtained in Examples 2 and 4 to 6, and Comparative Examples 1 and 2. , The results are shown in FIG. 6.

Referring to FIG. 6, as the driving pressure P increased, the adsorbents obtained in Examples 2, 4, and 5 and Example 6 improved carbon dioxide adsorption properties by about 24 times and about 26.7 times, respectively, compared to Comparative Example 1 It was shown.

Experimental Example 4. Confirmation of gas adsorption characteristics of organic and inorganic nanoporous materials

To confirm the gas adsorption characteristics of the gas adsorbents obtained in Examples 1 to 3, 5 and 6, and Comparative Examples 1 and 2, the N ₂ adsorption isotherm at the liquid nitrogen temperature was measured, and the results are shown in FIG. 7. Shown.

Referring to FIG. 7, when the driving pressure P/P0 = 0.95 at the liquid nitrogen temperature, the gas adsorbents obtained in Examples 1 to 3, 5, and 6 were 200 cm ³ /g, 250 cm ³ /g, and 280, respectively. In comparison with the adsorption amount of cm ³ /g and 310 cm ³ /g, in the case of the gas adsorbent according to Comparative Example 1, it was confirmed that the adsorption amount was only up to 25 cm ³ /g.

The above description of the present invention is for illustration only, and a person having ordinary knowledge in the technical field to which the present invention pertains can understand that it can be easily modified to other specific forms without changing the technical spirit or essential features of the present invention. will be. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive. For example, each component described as a single type may be implemented in a distributed manner, and similarly, components described as distributed may be implemented in a combined form.

The scope of the present invention is indicated by the following claims, and all modifications or variations derived from the meaning and scope of the claims and their equivalent concepts should be interpreted to be included in the scope of the present invention.

Claims (15)

Preparing an organic/inorganic nanoporous precursor by mixing an aluminum precursor, one or more unsaturated dicarboxylic acids, and water; And
Crystallizing the organic/inorganic nanoporous precursor to prepare a product;
Inorganic nanostructures manufacturing method comprising a. According to claim 1,
The aluminum precursor includes at least one selected from the group consisting of aluminum nitrate (Al(NO ₃ ) ₃ ), aluminum chloride (AlCl ₃ ), aluminum sulfate (Al ₂ (SO ₄ ) ₃ ), and hydrates thereof. Manufacturing method of organic/inorganic nanostructures. According to claim 1,
A method of manufacturing an organic-inorganic nanoporous material provided in a molar ratio of the aluminum precursor to the at least one unsaturated dicarboxylic acid in the range of 0.5:1 to 1.5:1. According to claim 1,
The at least one unsaturated dicarboxylic acid is a mixture of fumaric acid and itaconic acid. The method of claim 4,
In the mixture, the molar ratio of the fumaric acid and the itaconic acid is 100: 0 to 50: 50 method for producing organic-inorganic nanopores. According to claim 1,
The organic-inorganic nanoporous material precursor is an organic-inorganic nanoporous material manufacturing method further comprising an urea. The method of claim 6,
The urea is an organic-inorganic nanoporous material manufacturing method provided by 0.5 to 5 times based on the number of moles of the aluminum precursor. According to claim 1,
The crystallization is carried out for 12 hours to 40 hours at a temperature of 100 ℃ to 200 ℃ organic-inorganic pores manufacturing method. According to claim 1,
Inorganic nanoporous material manufacturing method further comprising the step of filtering, purifying and drying the product. According to claim 1,
The organic-inorganic nanoporous body has an average diameter of 100 nm to 20,000 nm, and the pores have an average diameter of 0.3 nm to 1.5 nm. An organic-inorganic nanoporous body manufactured by the manufacturing method of claim 1. A gas adsorbent comprising the organic-inorganic nanoporous body of claim 10. The method of claim 12,
The gas is any one selected from the group consisting of moisture, carbon dioxide, and combinations thereof. The method of claim 12,
The gas adsorbent is a gas adsorbent having a maximum water adsorption amount of 150 mg/g or more in a range of driving pressure P/P ₀ =0.1 to 0.3. The method of claim 12,
The gas adsorbent is a gas adsorbent having a maximum carbon dioxide adsorption amount of 0.5 mmol/g or more at 1 atmosphere or less.

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