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Preparation method of gel type styrene cation resins for chromatographic separation

A cationic resin and styrene-based technology, which is applied in the field of preparation of gel-type styrene-based cationic resins, can solve the problems of fragility and low mechanical strength, and achieve the effects of increasing content, reducing production costs, and improving mechanical strength

Active Publication Date: 2013-12-11
KAIRUI ENVIRONMENTAL PROTECTION TECH
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  • Summary
  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Because the gel cation exchange resin adopted in the above patents and known technologies has low mechanical strength and is easily broken, in order to promote domestic production, reduce production costs, and find suitable resins, further research is necessary

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Step 1. Preparation of Polymerized White Balls

[0019] The well-known 001*7 gel-type styrene-based cation exchange resin polymerization production standard formula is selected, and polymerized white balls are formed through polymerization reaction. After drying, the porogen is extracted and dried for use.

[0020] Step 2. Sulfonation reaction

[0021] The sulfonation reaction is carried out according to the known sulfonation process of 001*7 gel-type cation exchange resin. The difference is that 0.15% EDTA and 8% fluoroboric acid are added to the sulfuric acid, and the obtained product number is KRB-1.

Embodiment 2

[0023] Add the EDTA of sulfuric acid quality 0.1% in sulfuric acid in step 2, other is with embodiment 1. The resulting product number is KRB-2.

Embodiment 3

[0025] Add the EDTA of sulfuric acid quality 0.3% in sulfuric acid in step 2, other is with embodiment 1. The resulting product number was KRB-3.

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Abstract

The invention provides a preparation method of gel type styrene cation resins for chromatographic separation. According to the preparation method, styrene polymer white spheres are produced by selecting a temperature rising method and reaction time in an industrially known production standard process formula of gel type styrene cation exchange resins, then a chelating agent and fluoboric acid are added in sulfuric acid during sulfonation, and chromatographic separation resins can be obtained by carrying out standard process sulfonation reaction. Compared with gel type styrene cation exchange resins which are not added with the chelating agent and the fluoboric acid during the sulfonation, the chromatographic separation resins prepared by utilizing the preparation method have the advantages that the adsorption capacity can be improved by 50%, and the mechanical strength can be improved by 20%. According to the chromatographic separation resins prepared by utilizing the preparation method, the content of fructose can be increased, the production cost can be lowered, and foreign similar products can be replaced.

Description

technical field [0001] The invention relates to a method for producing a cation exchange resin, in particular to a method for preparing a gel-type styrene-based cation resin used for chromatographic separation. technical background [0002] The basic principle of the chromatographic adsorption separation process is that the solid adsorbent undergoes a cyclic process consisting of specific steps in sequence. In these steps, the solid adsorbent is in contact with a fluid, and by changing the nature and composition of the fluid phase, the adsorption The agent will adsorb an adsorbate in one step (adsorption) and release the adsorbate (desorption) in the next step, usually called regeneration or elution. The process completes one cycle when the adsorption step restarts. But when the fluid phase is liquid, the regeneration step also includes adsorbent washing, backwashing and rinsing. Usually, the adsorption separation process is carried out in a fixed bed. [0003] Fructose a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/285B01J20/30
Inventor 王金明张勇
Owner KAIRUI ENVIRONMENTAL PROTECTION TECH
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