Method for preparing macropore strong acid cation exchange resin with high specific surface area

A high specific surface area, cation exchange technology, applied in the field of preparation of organic polymer compounds, can solve the problems of small specific surface area of ​​cation exchange resin, slow ion exchange speed, unable to meet special requirements, etc. The degree of crosslinking and the effect of increasing the sulfonation temperature

Active Publication Date: 2012-10-10
山东德川化工科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The cation exchange resin prepared by this process has a small specific surface area and a slow ion exchange rate, which cannot meet the special requirements of new devices such as simulated moving beds for ion exchange resins.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] 1. Aggregation

[0031] Oil phase preparation: add 101g of styrene, 49g of divinylbenzene with a mass percentage of 55%, and 1.2g of benzoyl peroxide into a beaker, stir for 10 minutes, then add 35.1g of n-butanol, stir for 20 minutes before feeding.

[0032] Water phase preparation: Add 273g of pure water into a three-necked bottle, when the temperature rises to about 38°C, put in 2.2g of gelatin, and stir and dissolve at this temperature for 30 minutes; add 1.15g of disodium hydrogen phosphate and 4.59g of sodium phosphate, and heat up to At 85°C, 35.5 g of sodium chloride was added, stirred for 15 minutes, and 0.02 g of methylene blue was added.

[0033] After 5 minutes, add the prepared oil phase to the prepared water phase, start stirring slowly, and adjust the particle size. When the white ball is finalized, raise the temperature to 82°C and keep it for 4 hours, then raise the temperature to 88°C and keep it for 3 hours, and finally raise the temperature to 95°C,...

Embodiment 2

[0045] 1. Aggregation

[0046] Oil phase preparation: add 106.6g of styrene, 43.4g of divinylbenzene with a mass percentage of 58%, and 1.4g of azobisisobutylcyanide in a beaker, stir for 10 minutes, add 35.1g of isobutanol, stir for 20 minutes and wait Feeding.

[0047] Water phase preparation: Add 273g of deionized water into a three-necked flask, and when the temperature rises to about 38°C, add 2.2g of cellulose, and stir and dissolve at this temperature for 30 minutes; add 1.15g of sodium carbonate and 4.59g of magnesium sulfate, and heat up to At 85°C, 35.5 g of ammonium chloride was added, stirred for 15 minutes, and 0.02 g of methylene blue was added.

[0048] After 5 minutes, add the prepared oil phase to the prepared water phase, start stirring slowly, and adjust the particle size. When the white ball is finalized, raise the temperature to 82°C and keep it for 4 hours, then raise the temperature to 88°C and keep it for 3 hours, and finally raise the temperature to ...

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PUM

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Abstract

The invention discloses a method for preparing macropore strong acid cation exchange resin with a high specific surface area, and belongs to the field of the preparation for organic macromolecule compounds. The method comprises the following steps: copolymerizing styrene and a divinylbenzene monomer under the coexistence of porogen and a dispersion agent by taking low-carbon alcohol as the porogen, preparing a macropore copolymer white ball, performing macropore purification and high-temperature sulfonation to obtain the cation exchange resin. The crosslinking degree of the polymer white ball is increased by increasing the using amount of the divinylbenzene; the sulfonation temperature is increased at the same time; the specific surface area of the prepared cation exchange resin is large; the cation exchange speed is high; and the special requirement of a novel device such as a simulated mobile bed on the cation exchange resin can be met.

Description

technical field [0001] The invention belongs to the field of preparation of organic polymer compounds, and in particular relates to a preparation method of a high specific surface area macroporous strong acid cation exchange resin. Background technique [0002] Macroporous strong acid cation exchange resin is a kind of cation exchange resin with sulfonic acid groups, which is widely used in organic chemical reactions such as etherification, esterification, hydration, etherolysis and hydrolysis. In recent years, it has been widely used in pure water, Preparation of ultrapure water, drug purification, etc. The main factors that determine the performance of ion exchange resins are specific surface area and pore structure. [0003] Publication No. CN 1151334 Chinese authorized patent uses C3~C4 low-carbon alcohol compounds as porogens, and adopts suitable macromolecular compounds as dispersants and auxiliary dispersants to make styrene and polyvinyl mono Suspension copolymeriz...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J39/20
Inventor 郭汉法蔡振国王家伟邓福星高光迎王莎莎
Owner 山东德川化工科技有限责任公司
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