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Production method of high exchange capacity strong acid styrene cation exchange resin

A cation exchange and styrene-based technology, applied in the field of ion exchange resin preparation, can solve problems such as uneven pore size distribution, unsatisfactory customer satisfaction, and insufficient exchange capacity, and achieve uniform pore size distribution, increased exchange capacity, and optimized process parameters. Effect

Active Publication Date: 2016-07-06
ANHUI WANDONG CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the exchange capacity of the current anion and cation exchange resins has been effectively improved, the pore size distribution is uneven, the proportion of small pores is too large, and the exchange rate is low.
Insufficient switching capacity and other issues cannot meet customer requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0050] The production method of high exchange capacity strong acid styrene series cation exchange resin comprises the following steps:

[0051] (1) One-time polymerization to prepare ball A, including the following steps:

[0052] Weigh the water phase raw materials with the following weights (kg) and mix them, raise the temperature of the water phase to 40-50°C, and stir thoroughly;

[0053] Deionized water 380

[0054] Gul gum 20

[0055] ethanol 10

[0056] Polyvinyl alcohol 50

[0057] Ethylenediamine 5

[0058] Diethylenetriamine 10

[0059] NaCl 70

[0060] Sodium persulfate 1

[0061] Use sulfuric acid to adjust the pH of the water phase to neutral

[0062] Add the following weights (kg) of raw materials to the aqueous phase;

[0063] Styrene 460

[0064] Divinylbenzene 30

[0065] Ferrocene 10

[0066] Toluene 100

[0067] Chlorinated Paraffin 50

[0068] Benzoyl peroxide 4

[0069] Raise the temperature to 79±1°C at a rate of 5-6°C / 10 minutes, obs...

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PUM

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Abstract

The invention discloses a method for producing high-exchange-capacity strong acid styrene cation exchange resin. According to the method for producing the high-exchange-capacity strong acid styrene cation exchange resin, based on the traditional production process, a suspension protecting agent, a dispersant, a pore forming agent and a complexing agent are reasonably matched, and process parameters are optimized, so that the cation exchange resin produced by the method has the effects that the pore size distribution is uniform, and the exchange capacity is improved; and according to the cation exchange resin produced by the method, the specific surface area can reach above 70 m<2> / g, the proportion of mesopores with the pore size which is more than 2 nm is higher than 55%, and the complete exchange capacity reaches 8.5 mmol / g.

Description

technical field [0001] The invention belongs to a preparation method of an ion exchange resin, in particular to a production method of a high-exchange capacity strong-acid styrene-based cation exchange resin. Background technique [0002] Anion and cation exchange resins are widely used in water treatment, material purification, concentration, separation, transformation of material ion composition, material decolorization and catalysts. Although the exchange capacity of current anion and cation exchange resins has been effectively improved, the pore size distribution is uneven, the proportion of small pores is too large, and the exchange rate is low. Insufficient switching capacity and other issues cannot meet customer requirements. SUMMARY OF THE INVENTION [0003] The purpose of the present invention is to provide a production method of high-capacity strong-acid styrene-based cation-exchange resins. The present invention improves the dispersibility and suspension by imp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F257/02C08F212/08C08F212/36C08F226/06C08F8/36C08F2/44C08J9/26B01J39/20
Inventor 姚能平梅德华陈建国林伟王海宽王玉兰
Owner ANHUI WANDONG CHEM