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Macroporous adsorption resin and synthesis method thereof

A technology of pore adsorption and resin, which is applied in the field of macroporous adsorption resin and its synthesis, can solve the problems of cumbersome process of macroporous adsorption resin, use of highly toxic and carcinogenic substances, and high production cost, and achieve low production cost, high mechanical strength, The effect of low synthesis cost

Pending Publication Date: 2021-11-26
SHAANXI LANSHEN SPECIAL RESIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a macroporous adsorbent resin and its synthesis method for the above-mentioned deficiencies in the prior art, to prepare a macroporous adsorbent resin with small pore size, large specific surface area and high strength, so as to solve the problem of existing macroporous adsorbent resins. Porous adsorption resin has problems such as cumbersome process, serious pollution, high production cost and the use of highly toxic and carcinogenic substances in the production process

Method used

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  • Macroporous adsorption resin and synthesis method thereof

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preparation example Construction

[0033] A kind of synthetic method of macroporous adsorption resin of the present invention comprises the following steps:

[0034] S1: white ball synthesis

[0035] Add the dispersant and polymerization inhibitor into the water and heat, stir until completely dissolved to form the water phase; mix the monomer, porogen and initiator evenly as the oil phase; add the oil phase to the prepared water phase solution , stand still, after the oil phase and the water phase are completely separated, adjust the height and rotation speed of the stirring paddle to control the particle size of the oil phase, stir at a constant speed after the particle size is appropriate, and then carry out the heating and heat preservation operation, and keep the temperature at 70-95°C for 10-20 hours ; After the reaction, wash off the dispersant on the surface of the resin with hot water, extract the porogen inside the resin, and then wash and dry.

[0036]The mass ratio of tap water, dispersant and poly...

Embodiment 1

[0045] A kind of macroporous adsorption resin and synthetic method thereof, specifically as follows:

[0046] Take by weighing 95g divinylbenzene (content 80%), 5g methyl acrylate, 150g toluene and 1.5g benzoyl peroxide and stir evenly to form an oil phase; take 500ml tap water, 0.5g carboxymethyl cellulose and 0.005g times Mix methylene blue into water phase, add the oil phase into the water phase solution, let it stand still to make the two completely separate, adjust the stirring speed to make it into a uniform droplet of a certain size, then keep stirring at a constant speed and slowly raise the temperature to 80°C React for 3 hours, and react for 10 hours at 85°C. After the reaction, filter out the mother liquor, wash the ball with hot water, then add a steam extractor to extract and recover toluene by steam at 95°C, extract until the outlet condensate contains almost no oil, stop the extraction, and finally cool down and discharge. Dry the extracted white balls at 105°C...

Embodiment 2

[0049] A kind of macroporous adsorption resin and synthetic method thereof, specifically as follows:

[0050] An oil phase mixture containing 85 g of divinylbenzene (content 80%), 15 g of methyl styrene, 130 g of recovered toluene and 1.0 g of benzoyl peroxide was added to 500 ml of tap water, 2.5 g of gelatin and 0.025 g of methylene blue In the water phase solution formed, let it stand still, after the oil phase and the water phase are completely separated, adjust the stirring speed to make it into a uniform droplet of a certain size, then keep stirring at a constant speed and slowly raise the temperature to 80 ° C for 3 hours, 85 ° C Reaction for 7 hours. After the reaction, wash the ball with hot water, then add it to the steam extractor, carry out steam extraction at 95°C to recover the porogen toluene, extract until the outlet condensate contains almost no oil, stop the extraction, and finally cool down and discharge. Dry the extracted white balls at 105°C for 5 hours u...

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Abstract

The invention discloses macroporous adsorption resin and a synthesis method thereof. The synthesis method comprises the following steps of preparing a dispersant, a polymerization inhibitor and tap water into a water phase, mixing a monomer, a pore-foaming agent and an initiator to prepare an oil phase, adding the oil phase into the water phase, standing, then stirring at a constant speed, carrying out heating and heat preservation treatment, obtaining white balls after the reaction is finished, and washing and drying the white balls to obtain dry white balls, adding a solvent into dry white balls, stirring for swelling, then adding a catalyst in two times for heating reaction, after the reaction is finished, adding tap water into a system for heating azeotropic recovery of the solvent, then washing the resin with water until the resin is neutral, and screening to obtain the macroporous adsorption resin with the particle size of 0.315-1.25 mm. The resin is simple in process, low in production cost, green, environment-friendly and pollution-free, and the synthetic resin has the advantages of high mechanical strength, large specific surface area, relatively high adsorption performance on small molecular substances (such as ethyl acetate) and the like.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, and in particular relates to a macroporous adsorption resin and a synthesis method thereof. Background technique [0002] Macroporous adsorption resin refers to a class of polymers that do not contain exchange groups and have a rich pore structure, with a large specific surface area and rich macroporous network structure. Macroporous adsorption resin is widely used in industrial wastewater treatment, hemoperfusion, fruit juice, etc. Decolorization, the extraction of active ingredients of Chinese herbal medicines and antibiotics, etc., and the common macroporous adsorption resins mainly include polystyrene and polyacrylic acid. [0003] At present, the industrialized macroporous adsorption resins with high adsorption capacity are mainly polystyrene-based, and most of them use chloromethyl ether to introduce -CH 2 Cl group to obtain chloromethyl polystyrene-divinylbenzene-chlorine balls...

Claims

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Application Information

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IPC IPC(8): C08F212/36C08F220/14C08F212/12C08F212/08C08F112/36C08F2/20C08J9/28B01J20/26B01J20/30
CPCC08F212/36C08F112/36C08F2/20C08J9/28B01J20/261C08J2325/02C08F220/14C08F212/12C08F212/08
Inventor 刘耀龙韩辉冯志军张运孙冰杰
Owner SHAANXI LANSHEN SPECIAL RESIN
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