A metal-organic framework and ionic liquid composite material and its preparation method and application

A metal organic framework, ionic liquid technology, applied in separation methods, chemical instruments and methods, other chemical processes, etc., can solve the problems of equipment corrosion, volatile adsorbents, etc., to achieve non-toxic materials, high adsorption value, easy to achieve Effect

Active Publication Date: 2021-09-07
WUHAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But this method also has its obvious shortcomings, such as the volatile adsorbent, serious equipment corrosion, etc.

Method used

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  • A metal-organic framework and ionic liquid composite material and its preparation method and application
  • A metal-organic framework and ionic liquid composite material and its preparation method and application
  • A metal-organic framework and ionic liquid composite material and its preparation method and application

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Embodiment 1

[0030] A metal-organic framework and ionic liquid composite material for carbon dioxide adsorption, the preparation method comprising the following steps:

[0031] Preparation of ionic liquid: in a 50mL two-necked flask, under N 2 Dissolve 3 mL of 1,2-dibromoethane and 4 mL of N-(3-aminopropyl) imidazole in 10 mL of acetone under protection, stir at room temperature to obtain a dark brown viscous liquid, separate by centrifugation, and then wash with acetone to obtain an ionic liquid ( 1-(3-aminopropyl)-3-(2-bromoethyl)imidazole bromide);

[0032] Dissolve 120 mg of the above-prepared ionic liquid in 30 mL of methanol, then add 1.232 g of 2-methylimidazole, stir at room temperature for 12 h to obtain an ionic liquid solution, dissolve 1.096 g of cobalt nitrate hexahydrate in 30 mL of methanol to obtain a cobalt nitrate solution, Then the ionic liquid solution was poured into the cobalt nitrate solution, stirred for 10 min, and allowed to stand for 24 h to obtain a purple prec...

Embodiment 2

[0039] A metal-organic framework and ionic liquid composite material for carbon dioxide adsorption, the preparation method comprising the following steps:

[0040] Preparation of ionic liquid: in a 50mL two-necked flask, under N 2Dissolve 3 mL of 1,2-dibromoethane and 4 mL of N-(3-aminopropyl) imidazole in 10 mL of acetone under protection, stir at room temperature to obtain a dark brown viscous liquid, separate by centrifugation, and then wash with acetone to obtain an ionic liquid;

[0041] Dissolve 90 mg of the ionic liquid prepared above in 30 mL of methanol, then add 1.232 g of 2-methylimidazole, stir at room temperature for 12 h to obtain an ionic liquid solution, dissolve 1.096 g of cobalt nitrate hexahydrate in 30 mL of methanol to obtain a cobalt nitrate solution, Then the ionic liquid solution was poured into the cobalt nitrate solution, stirred for 10 min, and allowed to stand for 24 h to obtain a purple precipitate, which was centrifuged, washed repeatedly with met...

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Abstract

The present invention relates to a metal organic framework and ionic liquid composite material and its preparation method and application. The steps of the preparation method are as follows: 1) Preparation of ionic liquid: 1,2-dibromoethane and N-(3-aminopropyl Base) Dissolve imidazole in acetone, stir and react at room temperature for 18-24 hours to obtain dark brown viscous liquid, obtain ionic liquid by centrifugal separation and washing; 2) Preparation of metal organic framework and ionic liquid composite material: dissolve ionic liquid in methanol , then add 2-methylimidazole, stir at room temperature for 12 hours to obtain an ionic liquid solution, then pour the resulting ionic liquid solution into a methanol solution of cobalt nitrate, stir for 10 minutes, and let stand for 24 hours to obtain a purple precipitate, which is centrifuged, washed, and dried A composite material of metal-organic framework and ionic liquid was obtained. The metal-organic framework and ionic liquid composite material provided by the invention has a high adsorption value for carbon dioxide, and the material is non-toxic and environmentally friendly.

Description

technical field [0001] The invention belongs to the technical field of functional materials, and in particular relates to a composite material of a metal organic framework and an ionic liquid, a preparation method and an application thereof. Background technique [0002] With the development of society, people's use of fossil fuels has greatly increased, which inevitably produces a large amount of carbon dioxide, and carbon dioxide is one of the main gases that cause the greenhouse effect. In December 2015, the "Paris Agreement" was passed at the Paris Climate Change Conference. Its purpose is to reduce greenhouse gas emissions. It can be seen that greenhouse gas emissions have become an international problem. At present, scientists from all over the world are actively working hard to overcome greenhouse gas emissions. this conundrum. At present, the relatively mature method for carbon dioxide adsorption is the alcohol amine adsorption method, which uses alcohol amine as a ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/22B01J20/30B01D53/02
CPCY02C20/40
Inventor 张海宁于佳琳
Owner WUHAN UNIV OF TECH
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