CN105713017A - High selectivity metal organic skeleton material and preparation method thereof - Google Patents
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Abstract
The invention discloses a high selectivity metal organic skeleton material and a preparation method thereof. The preparation method comprises the following steps: adding an organic ligand namely 2,7-bis(3,5-dibenzoic acid)-9-fluorenone, carbon nanotubes, and a copper source into an amine solvent and deionized water, evenly stirring in an enclosed container; then adding a nitric acid solution, evenly mixing, transferring the enclosed container to a baking oven to carry out crystallization; subjecting the obtained blue-green hexagonal crystals to multi-stage solvent extraction and solubilization treatments with N,N'-dimethyl formamide and methanol in sequence, and performing vacuum drying to obtain the pure metal organic skeleton material. The metal organic skeleton material comprises a secondary structural unit, which is formed through coordination between a Cu2(COO)4 structural unit and oxygen atoms of carboxylic acid. The secondary structural units are linked to each other so as to form a three dimensional channel structure. The provided high selectivity metal organic skeleton material is especially suitable for selective adsorption separation of mixed gas (acetylene, ethylene, and ethane), the operation conditions are mild, and the service life is long.
Description
Technical field
The present invention relates to a kind of metal-organic framework materials and preparation method thereof, more specifically about the copper base metal organic framework material and preparation method thereof of a kind of doped carbon nanometer pipe for methane selectively adsorbing separation.
Background technology
Methane is the main component of natural gas, coal bed gas, shale gas and biogas, is a kind of clean environment firendly, economical and practical energy gas resource.In actual use, often coexist with acetylene, ethylene and ethane, high-selectivity adsorption separation of methane, on the one hand it is favorably improved memory density and the combustion heat value of the fossil gas resources such as natural gas, is on the other hand also beneficial to improve the C that added value is higher2The utilization rate of gas resource.To this end, develop high selectivity, low operation requirement novel methane adsorption and separation material significant.
Metal-organic framework materials (MOFs) is that a class has high-specific surface area, adjustable change pore size, the porous material of organic functional.According to the difference of absorption object, by the way of self assembly, design high selective MOFs.In recent years, increasing scientific research personnel begins to focus on MOFs adsorption storage capability in hydrogen, methane, carbon dioxide equal energy source gas and adsorbing separation ability.
Additionally, in the metal-organic framework materials for methane adsorption storage and adsorbing separation, the actual effect of copper base metal organic framework material is optimal.But, during unreacted organic ligand molecule i.e. removed in follow-up reaming increase-volume, there is energy consumption height, time length, remove the deficiencies such as the most thorough, seriously constrain its industrial application.
CN102728331A discloses the preparation method of the metal-organic framework materials of a kind of adsorbing separation carbon dioxide/methane.Copper nitrate aqueous solution and trimesic acid ethanol solution are mixed, seal in reactor after being sufficiently stirred for, controlling crystallizing temperature and crystallization time, after reaction, through filtering, and successively with methanol and deionized water wash, at 80～105 DEG C, obtaining blue colored crystal, evacuation obtains copper-containing metal organic framework material after processing.This metal-organic framework materials has certain effect for selective absorption methane from methane/carbon dioxide mixed gas, but carbon dioxide and methane physicochemical property difference are relatively big, relative to methane and C2Gas (acetylene, ethylene and ethane) gaseous mixture is easier to separate；And the most also it is not directed to the C close with methane character2The adsorbing separation effect of gas.Additionally, metal-organic framework materials prepared by the method is with trimesic acid as organic ligand, its technical specification such as hydrothermal stability, structural symmetry all has much room for improvement.
CN101935277A discloses a kind of porous rare earth metal-organic framework materials for natural gas storage, is particularly well-suited to methane storage.By the nitrate of rare earth metal or halogenide and organic ligand BTC(trimesic acid) it is dissolved in the mixed solvent of organic solvent and water composition, again above-mentioned solution is reacted certain time under the temperature conditions of 4 DEG C～180 DEG C, with absolute ethanol washing for several times, obtain the clear crystal of rare earth metal organic framework material after drying, after activation, obtain that there is unsatuated metal site and the porous rare earth metal-organic framework materials in spacious duct further.This metal-organic framework materials possesses certain storage methane ability, but due to aperture factor, does not has, for the mixed gas that physicochemical property difference is little, the ability that is preferably selectively adsorbing and separating.
Summary of the invention
In view of the deficiencies in the prior art, copper base metal organic framework material that the invention provides a kind of doped carbon nanometer pipe and preparation method thereof.This metal-organic framework materials is particularly well-suited to methane and C2Being selectively adsorbing and separating of gas (acetylene, ethylene and ethane) gaseous mixture, operating condition is gentleer, uses the cycle long, is conducive to promoting the use of.
Height selective metal organic framework material of the present invention is a kind of to have the 2 of 3 D stereo pore passage structure, and 7-bis-(3,5-dibenzoic acid)-9-Fluorenone copper complex metal-organic framework materials, its chemical formula is C29H14Cu2O10, belong to rhombic system, cell parameter a=17.618 (15), b=17.618 (15)
, c=34.147 (3), α=90 °, β=90 °, γ=120 °, unit cell volume V=10250.5 (15)3, Z=5, Dc=0.649g/cm3；This framework material is by Cu2(COO)4Construction unit and carboxylate oxygen atoms are coordinated formation secondary structure unit, and secondary structure unit interlinks and forms 3 D stereo pore passage structure；Described metal-organic framework materials aperture is at 0.30nm～0.45nm, and pore volume is at 0.95cm3/ g～1.35cm3/g。
The preparation method of metal-organic framework materials of the present invention, including:
(1) organic ligand, CNT and Tong Yuan are joined in amine solvent and deionized water, airtight stir；
(2) in the mixed solution of step (1) gained, add salpeter solution, uniformly after mixing, hermetic container is moved to baking oven and carry out crystallization；
(3) the aeruginous hexagonal shape crystal obtained step (2) uses N, N'-dimethylformamide and methanol to carry out multiple-stage solvent extraction increase-volume successively and processes, and obtains pure metal-organic framework materials after vacuum drying.
Organic ligand 2,7-bis-(3,5-dibenzoic acid)-9-Fluorenone described in step (1) prepares via Suzuki coupling reaction (Suzuki coupling).
CNT described in step (1) is selected from one or both in SWCN and multi-walled carbon nano-tubes, and its specific surface area and pore volume are respectively at 3000m2/ g and 1.50 cm3/ more than g.Soaking in the nitric acid of the 65wt% that volume ratio is 1:1 and the sulfuric acid mixed solution of 70wt% and stir before using, temperature is at 40 DEG C～90 DEG C.Sucking filtration, be washed to neutrality after, be dried 5～20h temperature 60 C～90 DEG C.
Copper source described in step (1) is selected from Cu (NO3)2·3H2O、Cu(NO3)2·2.5H2O、CuSO4·7H2O、CuCl2·5H2One or more in O, preferably Cu (NO3)2·2.5H2O。
Amine solvent described in step (1) is selected from one or more in N, N'-dimethylformamide, N, N'-diethylformamide and N, N'-dimethyl acetylamide, preferably N, N'-dimethylformamide.
Organic ligand and the mol ratio in copper source described in step (1) are (0.1～2): 1.Amine solvent and the volume ratio of deionized water described in step (1) are (5～10): 1.The mol ratio of organic ligand, CNT, copper source and mixed solution is (0.1～2): (0.05～1): 1:(10～100), and wherein the molal quantity of mixed solution calculates with water.Mixed solution stirring 20min～50min that step (1) obtains.
The mass concentration of the salpeter solution described in step (2) is 50wt%～80wt%.Nitric acid described in step (2) is (0.1～1) with the mol ratio in copper source: 1.Crystallization temperature described in step (2) is 40 DEG C～200 DEG C, preferably 55 DEG C～110 DEG C, and crystallization time is 48h～96h.
Multiple-stage solvent extraction capacity increasing technique described in step (3) is as follows: first with temperature at 35 DEG C～the N of 75 DEG C, N'-dimethylformamide sucking filtration 2 times, then with methanol sucking filtration once；After gained sample vacuum drying 0.5h～2h again with methanol solution sucking filtration once, at 55 DEG C～105 DEG C, 2h then it is dried；Dried sample is vacuum dried 0.5h～2h at 80 DEG C～120 DEG C, it is thus achieved that pure metal-organic framework materials.
The metal-organic framework materials of the present invention is to be prepared by the invention described above method.As depicted in figs. 1 and 2, have the 2 of 3 D stereo pore passage structure, 7-bis-(3,5-dibenzoic acid)-9-Fluorenone copper complex metal-organic framework materials.
The metal-organic framework materials of the present invention separates at methane selectively, particularly methane and C2Being selectively adsorbing and separating of gas (acetylene, ethylene and ethane) gaseous mixture has a good application prospect.
The metal-organic framework materials that the present invention provides, has the advantage that
(1) metal-organic framework materials of the present invention has more unsatuated metal Cu2+Point position, energy gas containing carbon-carbon double bond and triple carbon-carbon bonds had higher adsorption effect, the energy gas that double benzene ring structures of organic ligand also contain carbon-carbon double bond and triple carbon-carbon bonds for selective absorption serves certain effect, and a small amount of supercage structure that metal-organic framework materials is internally generated is also for separation of methane and C2Gas plays good result.
(2) organic ligand 2 that the present invention uses, 7-bis-(3,5-dibenzoic acid)-9-Fluorenone has the spatial symmetry of height so that metal-organic framework materials has good hydrothermal stability.In addition, multiple-stage solvent extraction capacity increasing technique is used to substituted for traditional reaming capacity increasing technique (if high temperature is by the method for burning>300 DEG C, simple sucking filtration>10h etc.), it is effectively shortened substrate processing time (i.e. less than 8h), reduce treatment temperature (<120 DEG C), energy consumption is relatively low, and reaming increase-volume at a lower temperature, it is not susceptible to that framing structure is damaged, duct caves in, generates the shortcomings such as metal-oxide.And owing to thoroughly cleaning the aperture of metal-organic framework materials and other cage or cavity body structure simultaneously, the material physicochemical property of gained is preferable.With Cu (NO3)2·2.5H2After O coordination, the metal-organic framework materials specific surface area obtained is up to 2800m2/ g, high porous volume reach 1.35 cm3/g。
(3) during CNT is dispersed in the 3-D solid structure of metal-organic framework materials, forming narrowing of finer and close network structure, beneficially aperture size, the aperture i.e. formed is conducive to storing C2Hydrocarbon gas, thus reach methane and C2Hydrocarbon gas more preferably separating effect；And owing to specific surface area and the pore volume of this CNT are the biggest, the metal-organic framework materials specific surface area of gained and pore volume also can increase.Additionally, CNT has preferable toughness and intensity, it is properly added the enhancing of beneficially metal-organic framework materials structure.Meanwhile, by the heat conductivity that it is higher, improve the heat conductivity of metal-organic framework materials, i.e. improve the speed (because gas absorption is exothermic process, heat conductivity improves and is conducive to storage and separates) of gas absorption storage and separation process.After adding CNT, the heat stability of material is obviously improved, and result shows, does not occur structure collapse and breakoff phenomenon at 500 DEG C after roasting 20h.
(4) the metal-organic framework materials operating condition that prepared by the present invention is gentle, and under room temperature, normal pressure in acetylene/methane mixed gas, the adsorptive selectivity of acetylene reaches 95%.Due to current methane/C2Gas (acetylene, ethylene and ethane) gaseous mixture to be selectively adsorbing and separating metal-organic framework materials little, therefore good progradation will be played in this area by the metal-organic framework materials of invention.
(5) compared with the preparation method of like product, the preparation process of the present invention is simple to operate, and energy consumption is relatively low, is more suitable for industrialized mass production.
Accompanying drawing explanation
Fig. 1 is by Cu2(COO)4Construction unit and carboxylate oxygen atoms are coordinated formation secondary structure unit.
Fig. 2 is 2,7-bis-(3,5-dibenzoic acid)-9-Fluorenone copper complex metal-organic framework materials with 3 D stereo pore passage structure that embodiment 1 obtains.
Fig. 3 is the XRD figure of the sample that embodiment 1 obtains.
The sample that Fig. 4 is embodiment 1 to be obtained with comparative example 4 N under at 77K2Adsorption isotherm.
Fig. 5 is the SEM comparison diagram of the sample that embodiment 1 obtains with comparative example 4.
Detailed description of the invention
Below in conjunction with embodiment, the present invention will be further described.In the present invention, wt% is mass fraction.
The organic ligand 2 that the embodiment of the present invention uses, 7-bis-(3,5-dibenzoic acid)-9-Fluorenone prepares via Suzuki coupling reaction (Suzuki coupling), specifically comprises the following steps that first, weigh dimethyl-5-bromine dimethyl isophthalate and duplex pinacol base two boron of molar ratio 1:1, with catalyst acetic acid potassium, 1,1'-bis-(diphenyl phosphine ferrocene palladium chloride) and 50mL1,4-dioxanes dissolve, 24h is stirred at 65 DEG C, obtain 2,7-bis-(3,5-dibenzoic acid methyl ester)-9-Fluorenone；Secondly, weigh the 2 of molar ratio 1:3, the bromo-9-Fluorenone of 7-bis-and 2,7-bis-(3,5-dibenzoic acid methyl ester)-9-Fluorenone, with catalyst potassium carbonate and 250mL1,4-dioxanes dissolves, and stirs 72h at 80 DEG C, obtain 2, the presoma of 7-bis-(3,5-dibenzoic acid)-9-Fluorenone；Again, by 2, the presoma of 7-bis-(3,5-dibenzoic acid)-9-Fluorenone puts into 20mL1, in 4-dioxane, add the sodium hydroxide solution that 50mL mass concentration is 10mol/L, filter after being sufficiently stirred for, products therefrom is i.e. 2,7-bis-(3,5-dibenzoic acid)-9-Fluorenone.
CNT uses SWCN, and its specific surface area and pore volume are 3300m respectively2/ g and 1.75 cm3/g.Soaking in the nitric acid of the 65wt% that volume ratio is 1:1 and the sulfuric acid mixed solution of 70wt% and stir before using, temperature is at 50 DEG C.Sucking filtration, be washed to neutrality after, be dried 10h at temperature 70 C.
Embodiment 1
Successively by 1.02mg2,7-bis-(3,5-dibenzoic acid)-9-Fluorenone, 8mg CNT and 1.95mgCu (NO3)2·2.5H2O is dissolved in the N that 3mL volume ratio is 8:1, in the mixed liquor of N'-dimethylformamide and deionized water, and room temperature airtight stirring 30min.With backward reaction bulb adds the salpeter solution 60 μ L that mass concentration is 70wt%, uniformly after mixing, hermetic container is moved to baking oven, crystallization 72h at 60 DEG C.Open reaction bulb, with the N of 50 DEG C, N'-dimethyl formamide solution 10mL sucking filtration 2 times, subsequently with 15mL methanol solution sucking filtration once；Gained sample vacuum drying 2h, then with the methanol solution sucking filtration of same volume once, at 80 DEG C, it is dried 2h subsequently；Dried sample is transferred to vacuum drying oven, is dried 2h, it is thus achieved that metal-organic framework materials A at 100 DEG C.
The determination of metal-organic framework materials A structure shows by testing on Shimadzu XRD-6000 X-ray single crystal diffractometer, and the chemical formula of this crystal is C29H14Cu2O10, belong to rhombic system, cell parameter a=17.618 (15), b=17.618 (15)
, c=34.147 (3), α=90 °, β=90 °, γ=120 °, unit cell volume V=10250.5 (15)3, Z=5, Dc=0.649g/cm3；This framework material is by Cu2(COO)4Construction unit and carboxylate oxygen atoms are coordinated formation secondary structure unit, and secondary structure unit interlinks and forms 3 D stereo pore passage structure.Fig. 3 and Fig. 4 sets forth N under the XRD figure of A and 77K2Adsorption isotherm.From XRD figure, crystal characteristic diffraction maximum is distinct and impurity peaks is less, illustrates that the relative crystallinity of A is higher.Adsorption isotherm is typical I type adsorption isotherm, shows that it is poromerics, from which further follows that its pore-size distribution concentrates on 0.30nm～0.45nm.
Embodiment 2
In embodiment 1, by 2,7-bis-(3,5-dibenzoic acid)-9-Fluorenone reduces to 0.408mg, and other reaction condition and material composition are constant, obtain pure metal-organic framework materials B.
Embodiment 3
In embodiment 1, improving the mixed liquor that volume ratio is the N of 8:1, N'-dimethylformamide and deionized water to 6mL, other reaction condition and material composition are constant, obtain pure metal-organic framework materials C.
Embodiment 4
In embodiment 1, the salpeter solution 80 μ L that mass concentration is 70wt%, other reaction condition and material will be added and form constant, obtain pure metal-organic framework materials D.
Embodiment 5
In embodiment 1, liter high crystallization temperature is to 120 DEG C, and other reaction condition and material composition are constant, obtain pure metal-organic framework materials E.
Embodiment 6
In embodiment 1, with Cu (NO3)2·3H2O replaces Cu (NO3)2·2.5H2O, other reaction condition and material composition are constant, obtain pure metal-organic framework materials F.
Comparative example 1
In embodiment 1, without CNT, other reaction condition and material composition are constant, obtain pure metal-organic framework materials G.
Comparative example 2
In embodiment 1, not using multiple-stage solvent to extract compatibilizing method, directly use N, N'-dimethylformamide to wash 3 times, other reaction condition and material composition are constant, obtain pure metal-organic framework materials H.
Comparative example 3
In embodiment 1, by organic ligand 2,7-bis-(3,5-dibenzoic acid)-9-Fluorenone changes trimesic acid into, and other reaction condition and material composition are constant, obtain pure metal-organic framework materials I.
Comparative example 4
The method described according to CN102728331A, copper nitrate aqueous solution and trimesic acid ethanol solution are mixed, seal in reactor after being sufficiently stirred for, controlling crystallizing temperature and crystallization time, after reaction, through filtering, and successively with methanol and deionized water wash, obtaining blue colored crystal at 100 DEG C, evacuation obtains copper-containing metal organic framework material J after processing.
Comparative example 5
The method described according to CN101516894A, joins the N containing p-phthalic acid by copper sulfate methanol solution, in N'-dimethylformamide suspension, stirs, it is thus achieved that blue precipitate under uniform temperature.Again by methanol solution blending and stirring 16h of blue precipitate Yu triethylenediamine, precipitation repeatedly wash through methanol, obtain copper-containing metal organic framework material K after vacuum drying.
In order to further illustrate metal-organic framework materials prepared by the present invention with existing similar metal organic framework material at methane and C2Difference in terms of gas-selectively adsorbing separation, is respectively listed in Tables 1 and 2 with methane, ethane with the selectivity of methane with methane, ethylene by physicochemical property and the acetylene of above-mentioned metal-organic framework materials.Wherein, specific surface area, aperture and pore volume are recorded by low temperature liquid nitrogen absorption method.
The physicochemical property of each metal-organic framework materials of table 1
The comparison of table 2 each metal-organic framework materials adsorbing separation effect
From Tables 1 and 2, metal-organic framework materials prepared by the present invention, owing to being properly added CNT, so having bigger specific surface area and pore volume；And material skeleton is not damaged, this material has good hydrothermal stability, and at 500 DEG C, roasting 20h does not occurs skeleton damaged；Metal-organic framework materials prepared by the present invention, heat conductivity is at more than 0.40W/m K, and the metal-organic framework materials in comparative example, heat conductivity is less than 0.40W/m K, and this is significant for the actual application improving this type of material.Additionally, its aperture of metal-organic framework materials prepared by the present invention concentrates on 0.30nm～0.45nm, and with a small amount of supercage structure, this is methane and C2Gas-selectively separates and provides the foundation.Use 2,7-bis-(3,5-dibenzoic acid)-9-Fluorenone and Cu (NO3)2·2.5H2The metal-organic framework materials that O complexation generates, has more unsatuated metal Cu2+Point position has higher adsorption effect to the energy gas containing carbon-carbon double bond and triple carbon-carbon bonds.At C2H2/CH4In mixed system, CH after absorption4Content decreases 5%～10%；At C2H4/CH4In mixed system, CH after absorption4Content decreases 8%～15%；At C2H6/CH4In mixed system, CH after absorption4Content decreases 15%～25%.
In order to deeply compare metal-organic framework materials that metal-organic framework materials prepared by the present invention and other method obtain in the qualitative difference of physics and chemistry, Fig. 5 is the SEM comparison diagram of embodiment 1 and comparative example 4 to sample.Visible, the addition of CNT does not cause metal-organic framework materials structural damage, and after adding CNT, the compact structure of material is more prominent.
Claims (12)
1. the preparation method of one kind high selective metal organic framework material, it is characterised in that include following content:
(1) by organic ligand 2,7-bis-(3,5-dibenzoic acid)-9-Fluorenone, CNT and Tong Yuan join in amine solvent and deionized water, airtight stir；
(2) in the mixed solution of step (1) gained, add salpeter solution, uniformly after mixing, hermetic container is moved to baking oven and carry out crystallization；
(3) the aeruginous hexagonal shape crystal obtained step (2) uses N, N'-dimethylformamide and methanol to carry out multiple-stage solvent extraction increase-volume successively and processes, and obtains pure metal-organic framework materials after vacuum drying.
The most in accordance with the method for claim 1, it is characterised in that: step (1) described organic ligand 2,7-bis-(3,5-dibenzoic acid)-9-Fluorenone is via Suzuki coupling reaction (Suzuki
Coupling) prepare.
The most in accordance with the method for claim 1, it is characterised in that: the CNT described in step (1) is selected from one or both in SWCN and multi-walled carbon nano-tubes, and its specific surface area and pore volume are respectively at 3000m2/ g and 1.50 cm3/ more than g.
The most in accordance with the method for claim 3, it is characterised in that: CNT soaks in the nitric acid of the 65wt% that volume ratio is 1:1 and the sulfuric acid mixed solution of 70wt% and stirs before using, and temperature is at 40 DEG C～90 DEG C；Sucking filtration, be washed to neutrality after, be dried 5～20h temperature 60 C～90 DEG C.
The most in accordance with the method for claim 1, it is characterised in that: the copper source described in step (1) is selected from Cu (NO3)2·3H2O、Cu(NO3)2·2.5H2O、CuSO4·7H2O and CuCl2·5H2One or more in O, preferably Cu (NO3)2·2.5H2O；One or more in N, N'-dimethylformamide, N, N'-diethylformamide and N, N'-dimethyl acetylamide of amine solvent.
6. according to the method described in claim 1 or 5, it is characterised in that: organic ligand and the mol ratio in copper source described in step (1) are (0.1～2): 1；Amine solvent and the volume ratio of deionized water described in step (1) are (5～10): 1.
7. according to the method described in claim 1,3 or 5, it is characterised in that: the mol ratio of organic ligand, CNT, copper source and mixed solution is (0.1～2): (0.05～1): 1:(10～100), and wherein the molal quantity of mixed solution calculates with water.
The most in accordance with the method for claim 1, it is characterised in that: the mass concentration of the salpeter solution described in step (2) is 50wt%～80wt%；Nitric acid is (0.1～1) with the mol ratio in copper source: 1.
The most in accordance with the method for claim 1, it is characterised in that: the crystallization temperature described in step (2) is 40 DEG C～200 DEG C, and crystallization time is 48h～96h.
The most in accordance with the method for claim 1, it is characterised in that: the multiple-stage solvent extraction increase-volume described in step (3) processes specific as follows: first with temperature at 35 DEG C～the N of 75 DEG C, N'-dimethyl formamide solution sucking filtration 2 times, then with methanol solution sucking filtration once；After gained sample vacuum drying 0.5h～2h again with methanol solution sucking filtration once, at 55 DEG C～105 DEG C, 2h then it is dried；Dried sample is vacuum dried 0.5h～2h at 80 DEG C～120 DEG C, it is thus achieved that pure metal-organic framework materials.
11. 1 kinds of copper base metal organic framework materials, it is characterised in that use the arbitrary described method of claim 1～10 to prepare.
12. according to the metal-organic framework materials described in claim 11 at methane and C2Application in being selectively adsorbing and separating of gas (acetylene, ethylene and ethane) gaseous mixture.
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| CN109851810A (en) * | 2019-03-22 | 2019-06-07 | 浙江大学 | A kind of borane anion supermolecule organic framework materials and its preparation method and application |
| CN111346611A (en) * | 2020-03-13 | 2020-06-30 | 吉林中科研伸科技有限公司 | Novel porous metal organic framework material and preparation method and application thereof |
| CN112742163A (en) * | 2020-12-22 | 2021-05-04 | 海南大学 | Application of MOFs material based on cuprous-alkynyl chemistry in acetylene/carbon dioxide separation |
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| CN107994225A (en) * | 2017-12-11 | 2018-05-04 | 徐军红 | A kind of porous silicon-carbon composite cathode material and preparation method thereof, lithium ion battery |
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| CN109851810A (en) * | 2019-03-22 | 2019-06-07 | 浙江大学 | A kind of borane anion supermolecule organic framework materials and its preparation method and application |
| CN111346611A (en) * | 2020-03-13 | 2020-06-30 | 吉林中科研伸科技有限公司 | Novel porous metal organic framework material and preparation method and application thereof |
| CN111346611B (en) * | 2020-03-13 | 2023-02-14 | 吉林中科研伸科技有限公司 | Novel porous metal organic framework material and preparation method and application thereof |
| CN112742163A (en) * | 2020-12-22 | 2021-05-04 | 海南大学 | Application of MOFs material based on cuprous-alkynyl chemistry in acetylene/carbon dioxide separation |
| CN114573829A (en) * | 2022-03-23 | 2022-06-03 | 北京化工大学 | Metal organic framework material and preparation method and application thereof |
| CN114573829B (en) * | 2022-03-23 | 2023-04-21 | 北京化工大学 | Metal organic framework material and preparation method and application thereof |
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