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Anionic exchange resin with bifunctional group and synthesis method thereof

A technology of exchange capacity and exchange resin, applied in the direction of anion exchange, organic anion exchanger, ion exchange, etc., can solve the problems of limited number of quaternary ammonium salt groups, difficult to improve, etc., and achieve the effect of broad application prospects.

Active Publication Date: 2014-10-29
津菲盐城节能环保材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

And the chloromethyl content in the chloromethylated polystyrene-divinylbenzene polymer is fixed (mass fraction 16-20%), is difficult to improve
This causes the number of quaternary ammonium salt groups on the surface of the resin to be limited by the number of chloromethyl groups, and it is difficult to improve

Method used

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  • Anionic exchange resin with bifunctional group and synthesis method thereof
  • Anionic exchange resin with bifunctional group and synthesis method thereof
  • Anionic exchange resin with bifunctional group and synthesis method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034]A kind of preparation method of high exchange capacity bifunctional group anion exchange resin, its steps are:

[0035] 1) Primary amination reaction

[0036] 5g of chloromethylated polystyrene-divinylbenzene polymer (polymerization degree m is 3000) was swelled at 20°C for 3 hours in a mixed solution of 15 milliliters of absolute ethanol and 2 milliliters of chloroform, and 4 grams of hexamethylene Tetramine, stirred and reacted at 35°C for 6 hours. The polymer was filtered off and washed with ethanol. Concentrated hydrochloric acid with a mass fraction of 37.5% and absolute ethanol are formulated into a mixed acid hydrolysis solution, so that the volume of concentrated hydrochloric acid (ml): the volume of absolute ethanol (ml) = 1:2. Add the polymer to the concentrated hydrochloric acid-absolute ethanol mixed acid hydrolysis solution, so that chloromethylated polystyrene-divinylbenzene polymer (g): mixed acid hydrolysis solution (ml) = 1:4. 35 ° C reaction 2 Hour. ...

Embodiment 2

[0046] A kind of preparation method of high exchange capacity bifunctional group anion exchange resin, its steps are:

[0047] 1) Primary amination reaction

[0048] 5g of chloromethylated polystyrene-divinylbenzene polymer (polymerization degree 3530) was swelled at 20°C for 3 hours in a mixed solution of 15 milliliters of absolute ethanol and 2 milliliters of chloroform, and 4 grams of hexamethylenetetramine was added , and the reaction was stirred at 35 °C for 6 hours. The polymer was filtered off and washed with ethanol. Concentrated hydrochloric acid with a mass fraction of 37.5% and absolute ethanol are formulated into a mixed acid hydrolysis solution, so that the volume of concentrated hydrochloric acid (ml): the volume of absolute ethanol (ml) = 1:2. Add the polymer to the concentrated hydrochloric acid-absolute ethanol mixed acid hydrolysis solution, so that chloromethylated polystyrene-divinylbenzene polymer (g): mixed acid hydrolysis solution (ml) = 1:4. 35 ° C re...

Embodiment 3

[0053] A kind of preparation method of high exchange capacity bifunctional group anion exchange resin, its steps are:

[0054] 1) Primary amination reaction

[0055] 5g of chloromethylated polystyrene-divinylbenzene polymer (polymerization degree 3870) was swelled at 20°C for 3 hours in a mixed solution of 15 milliliters of absolute ethanol and 2 milliliters of chloroform, and 4 grams of hexamethylenetetramine was added , and the reaction was stirred at 35 °C for 6 hours. The polymer was filtered off and washed with ethanol. Concentrated hydrochloric acid with a mass fraction of 37.5% and absolute ethanol are formulated into a mixed acid hydrolysis solution, so that the volume of concentrated hydrochloric acid (ml): the volume of absolute ethanol (ml) = 1:2. Add the polymer to the concentrated hydrochloric acid-absolute ethanol mixed acid hydrolysis solution, so that chloromethylated polystyrene-divinylbenzene polymer (g): mixed acid hydrolysis solution (ml) = 1:4. 35 ° C re...

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Abstract

The invention discloses a high exchange capacity anionic exchange resin with a bifunctional group and a synthesis method thereof, and belongs to the field of environment functional material synthesis and application. Chloromethylated polystyrene-divinylbenzene polymer is taken as the primary material, and then is subjected to a primary amination reaction and a quaternary amination reaction so as to obtain the anionic exchange resin with a bifunctional group having the functions of weak alkali type anionic group and strong alkali type anionic group. The anionic exchange resin has a high absorption capacity of nitrate ions in water, can effectively absorb natural organic acids such as phytic acid in water, is capable of eliminating nitrate ions in water and phytic acid organism matters, and thus has a wide application prospect in fields of drinking water treatment, underground water repairing, and deep treatment on city household sewage.

Description

technical field [0001] The invention discloses an anion exchange resin and a synthesis method thereof, more specifically a high exchange capacity bifunctional anion exchange resin and a synthesis method thereof, which uses chloromethylated polystyrene-divinylbenzene polymer as a matrix , through primary amination and quaternization reactions, high exchange capacity bifunctional anion exchange resin and its synthesis method are prepared. Background technique [0002] In recent years, water resources, especially groundwater resources, have been seriously polluted, causing various direct or potential harm to the ecological environment and human beings. Among them, the large-scale use of agricultural nitrogen fertilizer and the discharge of nitrogen-containing sewage have continuously increased the concentration of nitrate ions in the water body, which has already broken through the limit of the self-purification ability of the water body. Excessive intake of nitrate ions by th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F212/08C08F212/32C08F8/44C08F8/32
CPCC08F8/32C08F12/24C08F12/28B01J41/05B01J41/07B01J41/13C08F12/18C08F8/12C08F8/02C08F212/36C08F8/44
Inventor 王津南王钇杨欣程澄陈晨
Owner 津菲盐城节能环保材料科技有限公司
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