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A kind of sulfonic acid type cation exchange resin microsphere and preparation method thereof

A technology of cation exchange and resin microspheres, which is applied in the direction of cation exchange, ion exchange, chemical instruments and methods, etc., can solve the problems of wasting resources, particle size does not meet the requirements, increase energy consumption, etc., and achieve large ion exchange capacity and post-treatment Simple, Gentle Effects

Active Publication Date: 2019-08-27
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional method is to use styrene (St), diethylbenzene (DVB) copolymer microspheres prepared by suspension polymerization as the skeleton, and then directly drop concentrated sulfuric acid for sulfonation reaction, so that the benzene ring is modified with sulfonic acid base, to achieve the purpose of ion exchange, but some of the particle size of the polymer microspheres does not meet the requirements, which will increase production costs, increase energy consumption, waste resources, and its ion exchange effect is not particularly ideal

Method used

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  • A kind of sulfonic acid type cation exchange resin microsphere and preparation method thereof
  • A kind of sulfonic acid type cation exchange resin microsphere and preparation method thereof
  • A kind of sulfonic acid type cation exchange resin microsphere and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0036] 1) Under nitrogen protection, add 80mL deionized water, 3.62g AMPS, 0.067g MBA to a 250ml three-necked flask equipped with a stirring magnet and a condensing reflux device, stir well, then continue to add 4mL St, 25μL DVB, heat Raise the temperature to 75°C, keep the temperature for 10min, add 0.1g potassium persulfate (KPS) aqueous solution (dissolve 0.1g potassium persulfate in 20mL deionized water), react for 24h, use absolute ethanol and deionized water to deionize the product several times Centrifugal washing, vacuum drying to obtain milky white solid powder, which is polystyrene microspheres;

[0037] 2) Swell the milky white solid powder (0.2g) with 10mL of dichloromethane for 30min, and finally add a mixed solution of chlorosulfonic acid and dichloromethane (5mL of chlorosulfonic acid, 15mL of dichloromethane) dropwise under constant pressure, and carry out at room temperature After sulfonation reaction for 8 hours, and then centrifuged and washed with deionized...

Embodiment 2

[0039] 1) Under nitrogen protection, add 80mL of deionized water, 1.81g of AMPS, 0.034g of MBA to a 250ml three-necked flask equipped with a stirring magnet and a condensing reflux device, stir well, then continue to add 4mL of St, 25μL of DVB, and heat Raise the temperature to 75°C, keep the temperature for 10min, add 0.1g potassium persulfate (KPS) aqueous solution (dissolve 0.1g potassium persulfate in 20mL deionized water), react for 24h, use absolute ethanol and deionized water to deionize the product several times Centrifugal washing, vacuum drying to obtain milky white solid powder, which is polystyrene microspheres;

[0040] 2) Swell the milky white solid powder (0.2g) with 10mL of dichloromethane for 30min, and finally add a mixed solution of chlorosulfonic acid and dichloromethane (5mL of chlorosulfonic acid, 15mL of dichloromethane) dropwise under constant pressure, and carry out at room temperature After sulfonation reaction for 12 hours, and then centrifuged and w...

Embodiment 3

[0043]1) Under nitrogen protection, add 80mL deionized water, 0.904g AMPS, 0.017g MBA to a 150ml three-necked flask equipped with a stirring magnet and a condensing reflux device, stir well, then continue to add 4mL St, 25μL DVB, heat Raise the temperature to 75°C, keep the temperature for 10min, add 0.1g potassium persulfate (KPS) aqueous solution (dissolve 0.1g potassium persulfate in 20mL deionized water), react for 24h, use absolute ethanol and deionized water to test the product several times Centrifugal washing, vacuum drying to obtain milky white solid powder, which is polystyrene microspheres;

[0044] 2) Swell the milky white solid powder (0.2g) with 10mL of dichloromethane for 30min, and finally add a mixed solution of chlorosulfonic acid and dichloromethane (5mL of chlorosulfonic acid, 15mL of dichloromethane) dropwise under constant pressure, and carry out at room temperature After sulfonation reaction for 16 hours, and then centrifuged and washed with deionized wa...

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Abstract

The invention relates to a sulfonic acid type cation exchange resin microsphere and a preparation method thereof. A styrene / divinylbenzene / 2-acrylamido-2-methyl-1-propanesulfonate / N-N, -methylene bisacrylamide crosslinked polymer microsphere prepared by a soap-free emulsion polymerization method is taken as a framework and swelled with a solvent, and then sulfonated with chlorosulfonic acid to synthesize a cation exchange resin microsphere containing a large amount of sulfonate. The sulfonic acid type cation exchange resin microsphere and the preparation method thereof provided by the invention have the advantages of simple method, mild conditions, cheap raw materials, simple post-treatment, large ion exchange capacity and the like.

Description

technical field [0001] The invention belongs to the technical field of ion exchange materials, and in particular relates to an ion exchange material with large exchange capacity, in particular to a sulfonic acid type cation exchange resin microsphere and a preparation method thereof. Background technique [0002] Ion exchange resin is a kind of network structure polymer compound with active groups. It has the functions of exchange, selection, adsorption and catalysis. have major applications. Polystyrene-type ion exchange resin is the most widely used. It uses polystyrene as the skeleton, and the functional groups of small molecules modify the polystyrene benzene ring in the form of chemical bonds, so it retains the original low-molecular properties. Performance, and new functions can be added due to the polymer effect, which greatly improves the performance of ion exchange resins. Cross-linked polystyrene sulfonic acid ion exchange resin has a great effect on the softenin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F228/02C08F212/08C08F212/36C08F222/38C08F8/36C08J5/20B01J39/17
Inventor 戴李宗黄陈刘惠祥李奕奕陈国荣袁丛辉许一婷曾碧榕罗伟昂
Owner XIAMEN UNIV
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