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Molded metal-organic framework material and molding method thereof

A metal-organic framework and molding method technology, applied in the direction of separation methods, chemical instruments and methods, and other chemical processes, can solve the problems of loss of specific surface area, complex molding process, high cost, etc., and achieve good bonding performance and large specific surface area , the effect of high mechanical strength

Inactive Publication Date: 2017-08-11
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This solves the technical problems of the metal-organic framework materials in the prior art, such as complex molding process, long cycle, harsh conditions, high cost, and serious loss of specific surface area.

Method used

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  • Molded metal-organic framework material and molding method thereof
  • Molded metal-organic framework material and molding method thereof
  • Molded metal-organic framework material and molding method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] The substrate is polyethylene non-woven fabric, the metal-organic framework material is Cu-BTC, and the synthesized metal-organic framework material is non-woven fabric / Cu-BTC molding material.

[0050] Preparation:

[0051] (1) Synthesis of Cu-BTC: Dissolve copper acetate monohydrate (1.75g, 8.76mmol) and trimesic acid (0.84g, 4.06mmol) in ethanol (50ml), stir at room temperature for 48h, and filter to obtain a solid After that, it was washed once with ethanol and deionized water, and dried in vacuum at 100°C for 12 hours to obtain a Cu-BTC sample for future use.

[0052] (2) Preparation of Cu-BTC / cellulose suspension: put the Cu-BTC sample (0.5g) obtained in step (1) into deionized water (10ml), stir at 500rpm for 60min and then add to the prepared cellulose solution (20ml), then stirred at 25°C for 10 minutes at a speed of 500 rpm, and ultrasonically oscillated for 5 minutes to obtain a Cu-BTC / cellulose suspension for subsequent use; wherein the cellulose solution w...

Embodiment 2

[0056] The substrate is polyethylene non-woven fabric, the metal-organic framework material is UiO-66, and the synthesized metal-organic framework material is non-woven fabric / UiO-66 molding material.

[0057] Preparation:

[0058] (1) Synthesis of UiO-66: zirconium tetrachloride (5.83g, 0.025mol), terephthalic acid (4.15g, 0.025mol), hydrochloric acid solution (2ml, mass fraction is 37%), N,N- Dimethylformamide (150ml) was placed in a polytetrafluoroethylene-lined reaction kettle (750ml), reacted at 120°C for 24h, and the resulting solid was washed with N,N-dimethylformamide and methanol respectively, and dried at room temperature to obtain a UiO-66 sample for future use.

[0059] (2) Preparation of UiO-66 / polyvinyl alcohol suspension: put the UiO-66 sample (0.5g) obtained in step (1) into deionized water (10ml), stir at 500rpm for 60min and then add to the preparation In a good polyvinyl alcohol solution (20ml), stir again at 25°C for 10 min at 500 rpm, and ultrasonically ...

Embodiment 3

[0063] The substrate is polyethylene non-woven fabric, the metal-organic framework material is ZIF-8, and the synthesized metal-organic framework material is non-woven fabric / ZIF-8 molding material.

[0064] Preparation:

[0065] (1) Synthesis of ZIF-8: Zinc nitrate hexahydrate (0.796g, 2.68mmol) and 2-methylimidazole (0.2g, 2.44mmol) were dissolved in N,N-dimethylformamide (60ml), Stir at room temperature for 10 minutes, seal the reaction vessel, react at 140°C for 24 hours, after cooling down to room temperature, add chloroform, collect the upper layer product, then soak in methanol for 3 days, replace the solvent once a day, and then remove the product Gas treatment, first at room temperature for 3 hours, and then at 300 ° C for 2 hours to obtain a ZIF-8 sample for future use.

[0066] (2) Preparation of ZIF-8 / povidone suspension: the ZIF-8 sample (0.5g) obtained in step (1) is put into deionized water (10ml), and added to the preparation after stirring at 500rpm for 60min...

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Abstract

The invention discloses a molded metal-organic framework material and a molding method thereof. The molding method comprises the following steps: preparing a binder solution with a proper concentration to allow the binder solution to minimally block holes in a metal-organic framework material while maintaining good bonding performance; then uniformly mixing the binder solution with a suspension of the metal-organic framework material; placing a substrate membrane in the mixed solution obtained in the previous step to allow the surface of the substrate membrane to be uniformly adhered by a layer of the metal-organic framework material; and then soaking the substrate membrane uniformly adhered by the metal-organic framework material in an organic solvent to allow water molecules in the pore channels of the metal-organic framework material to be displaced out so as to reinforce the strength of the metal-organic framework material adhered on a substrate, wherein the molded metal-organic framework material with a large specific surface area and high mechanical strength is eventually obtained. Thus, the molding method provided by the invention overcomes the technical problems of complex molding process, a long molding period, severe conditions, high cost, severe loss of specific surface areas and the like in the prior art.

Description

technical field [0001] The invention belongs to the field of new functional materials, and more specifically relates to a metal organic framework molding material and a molding method thereof. Background technique [0002] With the rapid economic development in recent years, the resulting energy crisis and environmental pollution cannot be ignored. At present, the adsorption method is used for the purification of general pollutants, but traditional adsorbents have problems such as low adsorption capacity, slow adsorption speed, and easy desorption to cause secondary pollution. [0003] In recent years, there have been many studies on metal-organic framework materials at home and abroad. Metal-organic framework materials are crystalline porous materials with regular pore or pore structures that are interconnected by inorganic metal central atoms and organic functional groups through covalent bonds or ion-covalent bonds. However, the existence of its powder state has brought...

Claims

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Application Information

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IPC IPC(8): B01J20/22B01J20/30B01D53/02
CPCB01J20/226B01D53/02
Inventor 李松卞磊廖唯唯孙悦刘晓威王千羽王少颖夏潇潇
Owner HUAZHONG UNIV OF SCI & TECH
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