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Preparation and application of highly crosslinked imidazole ionic liquid porous organic polymer

An ionic liquid, cross-linked imidazole technology, applied in the direction of organic compound/hydride/coordination complex catalyst, chemical/physical process, physical/chemical process catalyst, etc., can solve the problem of high substrate requirements, insufficient catalytic activity, Complex operation and other problems, to achieve the effects of huge development potential, wide range of pore volume changes, and simple preparation process

Inactive Publication Date: 2018-12-07
EAST CHINA NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The synthesis of ionic liquid polymers in the prior art has high requirements on substrates, complex operations, insufficient catalytic activity and long-term reaction to obtain better yields, etc.

Method used

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  • Preparation and application of highly crosslinked imidazole ionic liquid porous organic polymer
  • Preparation and application of highly crosslinked imidazole ionic liquid porous organic polymer
  • Preparation and application of highly crosslinked imidazole ionic liquid porous organic polymer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Weigh 0.28g of 1,3-dibenzyl imidazolium chloride salt, 0.88g of 1,4-p-dichlorobenzyl and 1.62g of ferric chloride catalyst and dissolve it in 20mL of 1,2-dichloroethane. After the reaction was completed, the filtrate was washed three times with methanol and then sucked dry, and was extracted with methanol in a Soxhlet extractor for 24 hours and then vacuum-dried to obtain 0.9 g of the product as a highly cross-linked imidazole ionic liquid porous organic polymer.

[0019] See attached figure 1 , the above product was characterized by scanning electron microscopy, and the morphology of the obtained polymer was an amorphous porous structure.

[0020] See attached figure 2 , the above product was characterized by nitrogen adsorption-desorption isotherm, and its specific surface area was 353.9m 2 g -1 , the pore volume is 0.5cm 3 g -1 .

Embodiment 2

[0022] Weigh 0.28g of 1,3-dibenzyl imidazolium chloride salt, 1.65g of 1,4-p-dichlorobenzyl and 1.62g of ferric chloride catalyst and dissolve it in 30mL of 1,2-dichloroethane. Under reaction for 24 hours, after the reaction finished, the filtrate was washed three times with methanol and then sucked dry, and was extracted with methanol in a Soxhlet extractor for 24 hours and then vacuum-dried to obtain 1.3g of the product as a highly cross-linked imidazole ionic liquid porous organic polymer.

Embodiment 3

[0024] Weigh 0.28g of 1,3-dibenzyl imidazolium chloride salt, 1.65g of 1,4-p-dichlorobenzyl and 3.24g of ferric chloride catalyst and dissolve in 40mL of 1,2-dichloroethane. Under reaction for 24 hours, after the reaction finished, the filtrate was washed three times with methanol and then sucked dry, and was extracted with methanol in a Soxhlet extractor for 24 hours and then vacuum-dried to obtain 1.7g of the product as a highly cross-linked imidazole ionic liquid porous organic polymer.

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Abstract

The invention discloses preparation and application of a highly crosslinked imidazole ionic liquid porous organic polymer. The polymer is characterized by being prepared by dissolving 1,3-dibenzylimidazolium chloride, 1-(dichloromethyl)-4-methylbenzene and iron trichloride in 1,2-dichloroethane, and carrying out a reaction. The prepared organic polymer has high catalytic activity in a reaction ofCO2 with ethylene oxide and derivatives thereof to synthesize a cyclic carbonate compound. Compared with the prior art, the highly crosslinked imidazole ionic liquid porous organic polymer has the advantages of good product selectivity, high catalyst activity, short reaction time, mild reaction conditions, easy separation and recovery of the catalyst, and is a recyclable catalyst for efficiently preparing cyclic carbonate compounds by using CO2. Therefore, the highly crosslinked imidazole ionic liquid porous organic polymer has great potential for development in the field of CO2 utilization catalysis.

Description

technical field [0001] The invention relates to the technical field of porous organic polymers and applications, in particular to a recyclable catalyst for CO 2 Preparation and application of highly cross-linked imidazolium ionic liquid porous organic polymers reacted with epoxy compounds. Background technique [0002] With the gradual development of industrial civilization, CO 2 The emission of carbon dioxide is also gradually increasing, and the problem of global warming is becoming more and more serious, which brings great challenges to the sustainable survival and development of human beings. Therefore, reducing CO in the atmosphere 2 content has become a very important research work, in many research work, CO 2 Synthetic chemicals as building blocks have become a research hotspot in green economy. Cyclic carbonate compounds are widely used in electrolytes, organic synthesis, textiles, printing and dyeing, and polymer materials, and are very important chemical raw mat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G73/06B01J31/02
CPCB01J31/0284C08G73/0616Y02P20/584
Inventor 吴海虹谷霍亮吴鹏
Owner EAST CHINA NORMAL UNIV
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