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A kind of preparation method of large exchange capacity heat-resistant strong alkali type anion exchange resin

An exchange resin and exchange capacity technology, applied in anion exchange, ion exchange, chemical instruments and methods, etc., can solve the problems of insufficient exchange capacity, prone to Hoffman degradation, side reactions, etc., and achieve large pore size and ion exchange. The effect of fast speed and few side effects

Active Publication Date: 2018-10-16
ANHUI WANDONG CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, strong base anion exchange resins are widely used in industrial wastewater treatment. The structure of strong base ion exchange resins contains quaternary ammonium groups, which are obtained by reacting a chloromethyl group connected to a polystyrene benzene ring with a molecule of tertiary amine. Due to the structural characteristics of quaternary ammonium groups , not only the side reaction of Hofmann degradation is very easy to occur when heated, but also the exchange capacity cannot meet the needs of areas with serious water pollution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A preparation method of heat-resistant strong base type anion exchange resin with large exchange capacity, comprising the steps of:

[0026] S1. Send 3-methyl-3-hydroxymethyloxetane, anhydrous dichloromethane, trimethylolpropane, sodium methoxide, and methanol into the reactor, and add boron trifluoride ethyl chloride under nitrogen protection. base ether stirring, the stirring temperature is 44 ° C, add deionized water, filter, dry, add DMF to dissolve completely, add 2,3-epoxypropyltrimethylammonium chloride, N,N-dimethylformamide , under the protection of nitrogen, add modified white carbon black for stirring, the stirring temperature is 56°C, and wash with methanol to obtain the first material;

[0027]S2. Put water, gelatin, and sodium phosphate into the reaction kettle and stir at 42°C to obtain a water phase; mix styrene, divinylbenzene, the first material, benzoyl peroxide, and fatty alcohol evenly to obtain Oil phase; heat up the water phase to 61°C under stir...

Embodiment 2

[0031] A preparation method of heat-resistant strong base type anion exchange resin with large exchange capacity, comprising the steps of:

[0032] S1, send 20 parts of 3-methyl-3-hydroxymethyl oxetane, 80 parts of anhydrous dichloromethane, 5 parts of trimethylolpropane, 10 parts of sodium methoxide, and 20 parts of methanol into In the reactor, under the protection of nitrogen, add 50 parts of boron trifluoride ethyl ether and stir for 20 minutes. The stirring temperature is 50 ° C. Add 50 parts of deionized water, filter and dry, add 50 parts of DMF to dissolve completely, add 20 parts of 2,3 -Glycidyltrimethylammonium chloride, 30 parts of N,N-dimethylformamide, under the protection of nitrogen, add 5 parts of modified white carbon black for stirring, the stirring temperature is 60°C, and the stirring time is 1h, Washed 6 times with methanol to obtain the first material;

[0033] S2. Put 60 parts of water, 4 parts of gelatin, and 0.5 parts of sodium phosphate into the rea...

Embodiment 3

[0038] A preparation method of heat-resistant strong base type anion exchange resin with large exchange capacity, comprising the steps of:

[0039] S1, 40 parts of 3-methyl-3-hydroxymethyl oxetane, 50 parts of anhydrous dichloromethane, 10 parts of trimethylolpropane, 5 parts of sodium methoxide and 40 parts of methanol are fed into In the reactor, under the protection of nitrogen, add 20 parts of boron trifluoride ethyl ether and stir for 50 minutes. The stirring temperature is 40 ° C. Add 100 parts of deionized water, filter and dry, add 30 parts of DMF to dissolve completely, add 50 parts of 2,3 -Glycidyltrimethylammonium chloride, 15 parts of N,N-dimethylformamide, under nitrogen protection, add 15 parts of modified white carbon black for stirring, the stirring temperature is 55°C, and the stirring time is 2h, Wash 3 times with methanol to obtain the first material;

[0040] S2. Put 80 parts of water, 1 part of gelatin, and 1.5 parts of sodium phosphate into the reaction ...

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PUM

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Abstract

The invention discloses a preparation method for a heatproof highly-basic anion exchange resin with great exchange capacity. The preparation method comprises the following steps: preparing a first material from 3-methyl-3-hydroxymethyloxetane, trimethylol propane, sodium methylate, boron trifluoride ethyl ether, 2,3-glycidyltrimethylammonium chloride, N,N-dimethyl formamide and modified white carbon black; preparing a water phase and an oil phase; adding the oil phase into the water phase and continuing to add dichloroethane and sulfuryl chloride to prepare a second material; adding cetyl dimethyl tertiary amine into the second prefabricated material, carrying out mixing and adding 1,6-hexamethylene-bis(cyanoguanidine) and sodium ethoxide to prepare a third prefabricated material; and adding nitrobenzene, anhydrous AlCl3, stearoyl chloride, chlorododecane and chlorocycloparaffin to prepare the heatproof highly-basic anion exchange resin with great exchange capacity. The anion exchange resin prepared in the invention has good thermal stability and great exchange capacity.

Description

technical field [0001] The invention relates to the technical field of anion exchange resins, in particular to a preparation method of a heat-resistant strong alkali type anion exchange resin with large exchange capacity. Background technique [0002] With the rapid development of my country's industrialization, industrial wastewater has seriously threatened the ecological environment and human health. In recent years, although local governments have actively adopted some measures to control the total discharge of industrial wastewater to a certain extent, compared with developed countries, my country's current form of further reduction of industrial wastewater discharge is still not optimistic. [0003] Ion exchange resin is a kind of active group with exchange ions, has a network structure, insoluble polymer compound, plays a key role in the field of industrial wastewater treatment; ion exchange resin can also be used in the treatment of industrial wastewater Recycling io...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F212/08C08F212/36C08F8/44C08F8/38C08F8/30C08K13/06C08K9/02C08K9/06C08K9/04C08K3/36C08K5/057C08K5/55C08K5/053C08K5/1525B01J41/14
Inventor 刘建荣樊致娟姚能平梅德华宣浩洋
Owner ANHUI WANDONG CHEM