Amide group modified hyper-crosslinked adsorption resin as well as preparation method and application thereof

A technology of ultra-high cross-linking and adsorption resin, applied in the direction of selective adsorption, chemical instruments and methods, ion exchange, etc., can solve the problems of complex synthesis route of cross-linking adsorption resin, and achieve the effect of high adsorption selectivity and high-efficiency separation

Pending Publication Date: 2022-02-08
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the defects and deficiencies of the existing amide group-modified polystyrene cross-linked adsorption resins, which have complex synthetic routes and require not only additional aminating agents and porogens, but also halogen-containing catalysts. On the basis of the adsorption performance of the linked adsorption resin, a method for preparing an amide group-modified ultra-high cross-linked adsorption resin is provided. The method adopts free radical polymerization to prepare the amide group-modified ultra-high cross-linked adsorption resin in one step, and the hydrophilic network The monomer itself is an aminating agent, and a large number of amide groups are introduced while forming a cross-linked adsorption resin to achieve the purpose of modifying the amide group

Method used

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  • Amide group modified hyper-crosslinked adsorption resin as well as preparation method and application thereof
  • Amide group modified hyper-crosslinked adsorption resin as well as preparation method and application thereof
  • Amide group modified hyper-crosslinked adsorption resin as well as preparation method and application thereof

Examples

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Embodiment 1

[0038] A preparation method of amide group modified ultra-high cross-linked adsorption resin, comprising the following steps:

[0039] First, add the hydrophilic network monomer N,N'-(4,4'-methylenediphenyl) bismaleimide and the hydrophobic network monomer di Vinylbenzene, and an appropriate amount of initiator azobisisobutyronitrile; then add 100mL dimethylformamide into the three-necked flask, stir and dissolve at room temperature, and then heat up to 80°C after bubbling nitrogen for 0.5h, and keep the reaction for 24h. get the reaction product;

[0040]Then, the above reaction product was Soxhlet-extracted with tetrahydrofuran for 24 hours, rinsed and soaked in water for 12 hours until odorless; finally, vacuum-dried at 80°C for 24 hours to obtain an amide group-modified ultra-high cross-linked adsorption resin. Its yield was 99.3%.

[0041] The specific surface area of ​​the amide group-modified ultra-high cross-linked adsorption resin prepared by the above preparation m...

Embodiment 2

[0043] In Example 2, the molar ratio of the hydrophilic network monomer to the hydrophobic network monomer was 1:1.5, and the others were the same as in Example 1; the yield of the obtained amide group-modified ultra-high cross-linked adsorption resin was 85.6%.

Embodiment 3

[0044] In Example 3, the molar ratio of the hydrophilic network monomer to the hydrophobic network monomer was 1:0.33, and the others were the same as in Example 1; the yield of the obtained amide group-modified ultra-high cross-linked adsorption resin was 76.2%.

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Abstract

The invention discloses a preparation method of amide group modified hyper-crosslinked adsorption resin. The preparation method comprises the following steps: mixing a hydrophilic network monomer, a hydrophobic network monomer and an initiator, and then carrying out free radical polymerization reaction to obtain the amide group modified hyper-crosslinked adsorption resin, wherein the hydrophilic network monomer is N,N'-(4, 4'-methylene diphenyl) bismaleimide and / or N,N'-1, 3-phenylene dimaleimide, the hydrophobic network monomer is styrene and / or divinyl benzene, the molar ratio of the hydrophilic network monomer to the hydrophobic network monomer is 1: (0.11-1.5), the polymerization reaction temperature is 70-90 DEG C, and the time is 4-24 hours. When the cross-linked adsorption resin prepared by the method is applied to adsorption separation of 5-hydroxymethyl furfural, the highest adsorption capacity can reach 67.2 mg / g of wet resin, the elution rate of the cross-linked adsorption resin to the 5-hydroxymethyl furfural is greater than or equal to 99.5%, and efficient separation of the 5-hydroxymethyl furfural is realized.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to an amide group-modified ultra-high cross-linked adsorption resin and its preparation method and application. Background technique [0002] 5-Hydroxymethylfurfural (5-HMF for short) is an important intermediate product in the hydrolysis process of lignocellulosic biomass in dilute acid at high temperature. Its molecule contains a furan ring, an aldehyde group and a Hydroxymethyl can be converted into other target molecules through hydrogenation, oxidative dehydrogenation, esterification, halogenation, polymerization and hydrolysis, etc., to prepare a variety of high value-added chemicals and energy fuels, widely used in fine chemicals, medicine, fuel additives and other industries. The preparation of 5-hydroxymethylfurfural is mainly obtained by dehydration of monosaccharides or polysaccharides converted from biomass under the action of an acid catalyst. However, due to...

Claims

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Application Information

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IPC IPC(8): C08F212/08C08F212/36C08F222/40B01J20/26B01J20/28B01J20/30B01D15/08
CPCC08F222/402C08F212/36C08F212/08B01J20/261B01J20/28083B01D15/08Y02P20/584
Inventor 林晓清胡蕾吴颖如冼君亭陶顺辉郑晓洁张晓东刘耀
Owner GUANGDONG UNIV OF TECH
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