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ZIF-8 encapsulated amino ionic liquid type carbon dioxide adsorbing-catalyzing agent

A ZIF-8, 1. ZIF-8 technology, applied in separation methods, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of high cost, high viscosity of ionic liquids, restricting applications, etc., and achieve conversion rate. The effect of high, high selectivity and large capacity

Active Publication Date: 2015-12-16
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, ionic liquids have disadvantages such as high viscosity and high cost, which seriously restrict their application.

Method used

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  • ZIF-8 encapsulated amino ionic liquid type carbon dioxide adsorbing-catalyzing agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Weigh 16.42g (200mmol) N -Methylimidazole, 13.02g (100mmol) of 3-chloropropylamine hydrochloride was added to 50mL of anhydrous acetonitrile, protected by nitrogen, heated to 75°C under stirring, and refluxed for 24 hours. After the reaction, remove the solvent acetonitrile by rotary evaporation, wash the obtained product with anhydrous ethyl acetate, dissolve it in a small amount of water after vacuum drying at room temperature, adjust the pH value to 8 with KOH solution, remove KCl by precipitation, and dry in vacuum to obtain light yellow Amino functionalized ionic liquid 14g.

[0025] Weigh 1.5g of zinc nitrate hexahydrate, and disperse in 70mL of anhydrous methanol together with 0.221g of the amino-functionalized ionic liquid prepared above to obtain a dispersion liquid, dissolve 3.3g of 2-methylimidazole in 70mL of anhydrous methanol, slowly drop Add it to the above dispersion, and stir vigorously at room temperature for 24 hours. After centrifugation, the obtai...

Embodiment 2

[0027] Take by weighing 1.5g zinc nitrate hexahydrate, and 0.295g of the amino-functionalized ionic liquid prepared in Example 1 is dispersed in 70mL of anhydrous methanol to obtain a dispersion, and 3.3g of 2-methylimidazole is dissolved in 70mL of anhydrous methanol, Slowly added dropwise to the above dispersion, and vigorously stirred at room temperature for 36 hours. After centrifugation, the obtained solid was washed with anhydrous methanol and vacuum-dried to obtain ZIF-8 encapsulated amino ionic liquid type CO 2Adsorption-catalyst white powder 0.70 g, labeled as IL-3ZIF-8.

Embodiment 3

[0029] Weigh 1.5g of zinc nitrate hexahydrate, and disperse it in 70mL of anhydrous methanol together with 0.442g of the amino-functionalized ionic liquid prepared in Example 1 to obtain a dispersion, and dissolve 3.3g of 2-methylimidazole in 70mL of anhydrous methanol, Slowly added dropwise to the above dispersion liquid, and vigorously stirred at room temperature for 30 hours. After centrifugation, the obtained solid was washed with anhydrous methanol and vacuum-dried to obtain ZIF-8 encapsulated amino ionic liquid type CO 2 Adsorption-catalyst white powder 0.65g, marked as IL-5ZIF-8.

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Abstract

The invention discloses a ZIF-8 encapsulated amino ionic liquid type carbon dioxide adsorbing-catalyzing agent. The ZIF-8 encapsulated amino ionic liquid type carbon dioxide adsorbing-catalyzing agent is prepared according to the following steps: taking the metal organic framework material ZIF-8 as a carrier; taking the amino-group functionalized ionic liquid 1-(3-aminopropyl)-3-methylimidazole chloride as an active component; immobilizing the amino-group functionalized ionic liquid in the super-cages of the ZIF-8 carrier in an in-situ manner during preparation of ZIF-8, wherein 1.5 to 5 mmol of the amino-group functionalized ionic liquid is immobilized in each gram of the adsorbing-catalyzing agent. The adsorbing-catalyzing agent integrates the functions of selective adsorbing and catalyzing into a whole, and can be used for synchronously adsorbing and converting carbon dioxide, so as to reduce the cost of the CUU technology.

Description

technical field [0001] The present invention relates to a CO 2 Adsorption-catalyst, especially involving a highly efficient CO2 based on ionic liquid active components, which combines selective adsorption and catalytic functions 2 An adsorption-catalyst, and a preparation method of the adsorption-catalyst. Background technique [0002] Global warming has become an environmental issue of great concern, with CO 2 The large amount of greenhouse gas emissions is the main reason for the aggravation of the greenhouse effect. From a resource point of view, CO 2 C again 1 The cheapest and most abundant carbon resource in the family, no matter from the perspective of resource utilization or environmental protection, the relevant CO 2 Both immobilization and chemical transformation research and development are of great significance. Therefore, CO 2 Capture and utilization (CCU) technology has become a hot technology that needs to be developed urgently. [0003] CO 2 It is ver...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/22C07D317/16B01D53/02B01D53/86B01D53/62B01J20/22B01J20/30
CPCY02C20/40Y02P20/151Y02P20/50
Inventor 史利娟卢建军李庆朝成晶晶
Owner TAIYUAN UNIV OF TECH
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