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A kind of preparation method and application of hypercrosslinked porous polyionic liquid material

A polyionic liquid and super-crosslinking technology, which is applied in the field of preparation of super-crosslinked porous polyionic liquid materials, can solve the problems of reducing surface energy, etc., and achieve the effect of simple recovery, high yield and large specific surface area

Inactive Publication Date: 2021-05-14
SHAOXING UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The hypercrosslinked polymer network needs to be formed under strong solvation to ensure that the polymer chains are fully swollen. After the solvent volatilizes, the polymer chains tend to shrink and pack tightly, reducing the surface energy, but the rigid hypercrosslinked structure restricts conformational conversion and prevents shrinkage. Occupies space to become a pore structure]

Method used

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  • A kind of preparation method and application of hypercrosslinked porous polyionic liquid material
  • A kind of preparation method and application of hypercrosslinked porous polyionic liquid material
  • A kind of preparation method and application of hypercrosslinked porous polyionic liquid material

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Embodiment 1

[0013] The preparation method of a hypercrosslinked porous polyionic liquid material provided in this embodiment, its specific operation steps are as follows:

[0014] Weigh 4-vinylbenzyl chloride, add ethyl acetate to make a 40% solution, add an initiator, the amount of the initiator is 1% of the total mass, stir at 70°C for 48h, filter, and then use ethyl acetate After washing with ester and ether for 3 times, vacuum-dry at 60°C to obtain poly-4-vinylbenzyl chloride. After dissolving 4,4′-bipyridine in a certain amount of methanol, add hydrochloric acid, and the molar amount of salt is bipyridine substance 2 times the amount to ensure the completion of the acidification, after vacuum distillation to remove the solvent, vacuum drying at 70°C to obtain 4,4'-bipyridyl hydrochloride, polyhalogenated hydrocarbon and bipyridyl salt in a molar ratio of 2:1 After grinding and mixing evenly, add sodium nitrite / lithium nitrate composite molten salt, the mass ratio of sodium nitrite an...

Embodiment 2-4

[0016] Except the following difference, all the other are identical with embodiment 1, adopt the halohydrocarbon shown in table 1 and bipyridine respectively.

[0017] Table 1

[0018]

Embodiment 5-9

[0020] Except following difference, all the other are with embodiment 1, respectively adopt the coordination anion shown in table 3.

[0021] Table 2

[0022]

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Abstract

The invention provides a method for preparing hypercrosslinked porous polyionic liquid material by ionothermal polymerization and its application. In the method, firstly, quaternization of alkenyl tertiary amine and thionyl chloride is carried out to form a rigid diene ionic liquid monomer, A suitable anion is introduced through ion exchange, and then ionothermal polymerization is carried out in a zinc chloride / potassium chloride composite molten salt system to obtain a super-crosslinked porous polyionic liquid material, which has broad application prospects. Advantages of the present invention: (1) the productive rate is high, being 92% to 97%; (2) the specific surface area of ​​the prepared material is large, at 200m 2 More than / g; (3) The material has a full ionic liquid skeleton, and the content of active components is high; (4) The preparation process is simple and the raw materials are easy to obtain; (5) The material has a wide range of applications, and can be effectively Adjusting the material structure can be used in catalysis, gas adsorption, wastewater treatment, separation and other fields; (6) The material is easy to recycle and reuse, and can be recovered by filtration.

Description

technical field [0001] The invention relates to a preparation method and application of a hypercrosslinked porous polyionic liquid material, belonging to the technical field of polymer chemical synthesis. Background technique [0002] Ionic liquids have excellent performance and are widely used, but they have disadvantages such as difficult recycling, high price, high viscosity, poor degradation, and inability to form. Immobilization can better solve the above problems, but the traditional loading method grafts a large volume of ionic liquid on the carrier, which is easy to cause pore blockage and low loading capacity. Porous polyionic liquids combine the specific properties of ionic liquids with the advantages of processable polymers, stable and durable, and adjustable structures, and are widely used in catalysis, adsorption separation, and electrochemistry. [0003] Porous polyionic liquids, especially pure polyionic liquid skeleton porous materials, are rarely studied, a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J3/24C08F112/14C08F114/16B01J31/06B01J35/10C07C253/30C07C255/41C02F1/28B01D53/14
CPCB01D53/1475C02F1/285C07C253/30C08F112/14C08F114/16C08J3/24B01J31/0285B01J31/06B01J2231/4205B01J35/615C07C255/41
Inventor 梁学正施映霞李俊巧程欲晓应灵洁阎润鸿
Owner SHAOXING UNIVERSITY
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