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Preparation method of super-crosslinked porous polyion liquid material and application

A polyionic liquid and hypercrosslinking technology, which is applied in the field of preparation of hypercrosslinked porous polyionic liquid materials, can solve problems such as difficulty in process control, and achieve the effects of wide application, high yield and easy availability of raw materials

Inactive Publication Date: 2019-03-01
SHAOXING UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The double bond polymerization process is a free radical chain reaction. When the crosslinking polymerization reaction is carried out simultaneously, the process control is difficult.

Method used

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  • Preparation method of super-crosslinked porous polyion liquid material and application
  • Preparation method of super-crosslinked porous polyion liquid material and application
  • Preparation method of super-crosslinked porous polyion liquid material and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A kind of preparation method of hypercrosslinked porous polyionic liquid material provided by the invention, its specific operation steps are as follows:

[0020] Step 1, the preparation of rigid cyanide ionic liquid monomer;

[0021] It is said that vinylimidazole and chloroacetonitrile are mixed according to the ratio of the mass of substances at 1:1, a polymerization inhibitor is added, and the amount of the polymerization inhibitor is 1% of the total mass, and tetrahydrofuran is added to form a 40% solution. After stirring for 48 hours, the corresponding ionic liquid was obtained, washed with ethyl acetate and ether three times in sequence, and then vacuum-dried at 60°C to obtain a rigid cyanide ionic liquid monomer, which was dissolved in a certain acetone solvent Finally, make a solution with a mass ratio concentration of 30%, add it to a solution containing potassium hexafluorophosphate for exchange, the molar amount of salt is 1.5 times that of the monomer, heat...

Embodiment 2-7

[0025] Except for the following differences, all the other are the same as in Example 1, using the tertiary amine compounds and halogenated hydrocarbons shown in Table 1 respectively.

[0026] Table 1

[0027]

[0028]

Embodiment 8-12

[0030] Except the following difference, all the other are identical with embodiment 1, adopt the coordination anion shown in table 2 respectively.

[0031] Table 2

[0032]

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Abstract

The invention discloses a method for preparing a super-crosslinked porous polyion liquid material with ion thermal crosslinking and application of the material. The method comprises the following steps: performing quaternization on alkenyl tertiary amine and chloromethyl cyanide or cyano tertiary amine and allyl halide or styrene benzyl halide; introducing proper complex anions through ion exchange; performing ionic thermal alkenyl polymerization and cyano crosslinking in an aluminum chloride / sodium chloride composite molten salt system to obtain the super-crosslinked porous polyion liquid material. The obtained material has a wide application prospect. The preparation method has the advantages of: (1) high yield, which is up to 91 to 98 percent; (2) large specific area, which is 250m<2> / gor more; (3) full ion liquid framework and high active component content; (4) simple and convenient preparation process, and ready availability of raw materials; (5) wide material application, capability of effectively adjusting the material structure by adjusting raw materials, complex anions and polymerization conditions, and applicability in the fields of catalysis, gas adsorption, wastewatertreatment, separation and the like; (6) easiness and convenience in recycling the materials.

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 Applications(China)
IPC IPC(8): C08J3/24C08F126/06C08F126/02C08F112/14C08F114/16C02F1/28B01D53/14B01J31/06B01J35/10C07C253/30C07C255/41
CPCB01D53/1475C02F1/285C07C253/30C08F112/14C08F114/16C08F126/02C08F126/06C08J3/24B01J31/0285B01J31/06B01J2231/4205B01J35/615C07C255/41
Inventor 梁学正李俊巧施映霞程欲晓赵哲彦韦艳明
Owner SHAOXING UNIVERSITY
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