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Boron adsorption resin as well as preparation method and application thereof

A technology for adsorbing resins and cross-linking agents, applied in chemical instruments and methods, adsorbed water/sewage treatment, other chemical processes, etc. Contamination and service life, improved boron adsorption capacity, and easy mass production effects

Active Publication Date: 2022-07-01
XIAN LANSHEN NEW MATERIAL TECHNOLOGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing boron special-effect adsorption resin still has the following defects: 1. The synthesis process route is long and the cost is relatively high
2. The chemical raw materials used in the production process, such as chloromethyl ether, DMF, etc., have problems such as high toxicity and difficult disposal, causing pollution to the environment
3. Due to the limited number of polystyrene-divinylbenzene white ball functionalized chloromethyl groups, the functional group density of boron special effect resin is low and the adsorption capacity is limited
4. Polystyrene-divinylbenzene skeleton resin has poor pollution resistance, and is easily affected by impurities in complex water bodies, resulting in reduced service life
Therefore, in view of the problems of low adsorption capacity, poor production process environmental protection, short life and high cost in the existing boron special adsorption resin, it is necessary to develop a resin adsorbent with simple preparation process, good tolerance and large adsorption capacity.

Method used

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  • Boron adsorption resin as well as preparation method and application thereof

Examples

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preparation example Construction

[0028] The preparation method of the boron adsorption resin of the present invention, the steps are as follows:

[0029] 1) After mixing the oil phase composed of glycidyl methacrylate (GMA), crosslinking agent, porogen, and benzoyl peroxide uniformly, disperse by stirring in brine containing dispersant, and then heat to 55-65 ℃, after holding for 2-3 hours, continue to heat up to 70-80 ℃, holding for 3-6 hours to obtain a reaction solution containing copolymerized beads, separate the copolymerized beads from the reaction solution, and then purify for use.

[0030] Among them, the mass of the cross-linking agent accounts for 10%-20% of the mass of GMA, the mass of the porogen is 30%-80% of the total mass of GMA and the cross-linking agent, and the mass of benzoyl peroxide is the mass of GMA and the cross-linking agent. 0.5%-1% of the total mass, and the mass of the dispersant is 1%-5% of the salt water mass.

[0031] 2) subjecting the purified copolymer beads to a hydrotherma...

Embodiment 1

[0042] 1) Mix the oil phase composed of 142.0g glycidyl methacrylate (GMA), 23.4g trimethylolpropane trimethacrylate (TMPTMA), 91.0g xylene and 2.0g benzoyl peroxide evenly Then, it was dispersed in 1200 ml of saline containing 60.0 g of 5% hydroxyethyl cellulose dispersant by stirring, and then heated to 60 °C, kept at 70 °C for 2 hours, and kept at 70 °C for 6 hours to obtain a bead containing copolymer beads. In the reaction solution, the copolymerized beads are separated from the reaction solution, and after the copolymerized beads are washed with water, they are extracted through a column with methylal to remove the porogen, and the purification is completed.

[0043] 2) carrying out the hydrothermal epoxy ring-opening reaction process to the purified copolymer beads as follows:

[0044] Add 20.0 g of purified copolymer beads to 60.0 g of deionized water and 20.0 g of tris(hydroxymethyl)aminomethane, stir at room temperature for 2 hours and mix well, then transfer to a hy...

Embodiment 2

[0047] 1) After mixing the oil phase composed of 142.0g glycidyl methacrylate (GMA), 21.5g trimethylolpropane trimethacrylate (TMPTMA), 50.0g toluene and 1.6g benzoyl peroxide evenly , dispersed by stirring in 1200ml of saline containing 60.0g 5% hydroxyethyl cellulose dispersant, then heated to 60°C, kept at 75°C for 2 hours, and kept at 75°C for 6 hours to obtain a reaction containing copolymer beads The copolymerized beads were separated from the reaction solution, washed with water, and then extracted through a column with methylal to remove the porogen, and the purification was completed.

[0048] 2) carrying out the hydrothermal epoxy ring-opening reaction process to the purified copolymer beads as follows:

[0049] 20.0 g of the purified copolymer beads were added to 80.0 g of deionized water and 18.0 g of tris(hydroxymethyl)aminomethane, stirred at room temperature for 2 hours and mixed well, and then transferred to a hydrothermal reactor lined with tetrafluoroethylene...

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Abstract

The invention provides boron adsorption resin as well as a preparation method and application thereof, and the preparation method comprises the following steps: 1) uniformly mixing an oil phase consisting of glycidyl methacrylate, a cross-linking agent, a pore-foaming agent and benzoyl peroxide, dispersing the oil phase in salt water containing a dispersing agent, carrying out suspension polymerization reaction, and separating from reaction liquid to obtain copolymerized beads; and 2) uniformly mixing the copolymerized beads, water and a polyhydroxy compound, and carrying out hydrothermal reaction to obtain the boron adsorption resin. According to the method disclosed by the invention, an organic solvent which is difficult to degrade is not used, the method is green and environment-friendly, the process operation is simple and convenient, and the resin has better pollution resistance and longer service life, and has higher adsorption selectivity and adsorption capacity on boron in the salt lake brine.

Description

technical field [0001] The invention belongs to the technical field of polymer chemical synthetic resin, and relates to a boron adsorption resin and a preparation method and application thereof. Background technique [0002] Boron is widely distributed in the environment, mainly in the form of boric acid or borates. In recent years, due to the increasing demand for boron compounds in the fields of nuclear technology, insulating fibers, glass, heat-resistant materials, catalysts, enamel glazes and agricultural production, the development and utilization of boron resources have become more and more important for modern industry. increasingly important role. In addition, a large amount of boron-containing pollutants produced by industrial production flows into the environment and also brings serious environmental problems. Therefore, both the extraction of boron resources or the removal of boron-containing pollutants is a very meaningful work. However, extracting or removing...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26B01J20/30C02F1/28
CPCB01J20/262B01J20/265B01J20/3064B01J20/3078C02F1/285C02F2101/108Y02P10/20
Inventor 张国华张运梅昂冯志军孙冰杰
Owner XIAN LANSHEN NEW MATERIAL TECHNOLOGY CO LTD
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