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Preparation method and application of porous material with surface grafted beta-cyclodextrin

A porous material, cyclodextrin technology, applied in chemical instruments and methods, other chemical processes, adsorption water/sewage treatment, etc., can solve problems such as particle surface reduction, increase specific surface area, and good environmental compatibility , good adsorption effect

Active Publication Date: 2014-02-12
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the adsorbent particles after adsorbing phenol will stick together, resulting in a rapid decrease in the surface of the particles. After a period of use, the adsorbent particles must be replaced to ensure the separation efficiency

Method used

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  • Preparation method and application of porous material with surface grafted beta-cyclodextrin
  • Preparation method and application of porous material with surface grafted beta-cyclodextrin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] (1) Preparation of polystyrene porous material by concentrated emulsion polymerization: firstly, in a flask, 6 g of continuous phase styrene, 1.5 g of crosslinking agent p-vinylbenzene, and 802.02 g of emulsifier Span were mixed uniformly under high-speed stirring. Then configure the dispersed phase, dissolve 0.15g of water-soluble initiator potassium persulfate and 0.375g of electrolyte potassium sulfate in 90g of deionized water, mix well, and slowly add it dropwise to the continuous phase with a syringe under stirring state to disperse in the emulsion system The latex particles are uniform in size, forming a thick emulsion. Finally, it was reacted in a water bath at 70°C for 36 hours, and the product was taken out. Washing several times with ethanol and water, drying in a vacuum oven to constant weight, the polystyrene porous material can be obtained.

[0019] (2) Amination treatment of polystyrene porous material: swell 3 g of polystyrene porous material prepared i...

Embodiment 2

[0023] (1) Preparation of polystyrene porous material by concentrated emulsion polymerization: firstly, in a flask, 6 g of continuous phase styrene, 1.5 g of crosslinking agent p-vinylbenzene, and 802.02 g of emulsifier Span were mixed uniformly under high-speed stirring. Then configure the dispersed phase, dissolve 0.15g of water-soluble initiator potassium persulfate and 0.375g of electrolyte potassium sulfate in 90g of deionized water, mix well, and slowly add it dropwise to the continuous phase with a syringe under stirring state to disperse in the emulsion system The latex particles are uniform in size, forming a thick emulsion. Finally, it was reacted in a water bath at 70°C for 36 hours, and the product was taken out. Washing several times with ethanol and water, drying in a vacuum oven to constant weight, the polystyrene porous material can be obtained.

[0024] (2) Amination treatment of polystyrene porous material: swell 3 g of polystyrene porous material prepared i...

Embodiment 3

[0028](1) Preparation of polystyrene porous material by concentrated emulsion polymerization: first, in a flask, mix 6.85 g of continuous phase styrene, 1.72 g of crosslinking agent p-vinylbenzene and 800.89 g of emulsifier Span under high-speed stirring. . Then configure the dispersed phase, dissolve 0.17g of water-soluble initiator potassium persulfate and 0.42g of electrolyte potassium sulfate in 40g of deionized water, mix well, and slowly add it dropwise to the continuous phase with a syringe under stirring state to disperse in the emulsion system The latex particles are uniform in size, forming a thick emulsion. Finally, it was reacted in a water bath at 50°C for 24 hours, and the product was taken out. Washing several times with ethanol and water, drying in a vacuum oven to constant weight, the polystyrene porous material can be obtained.

[0029] (2) Amination treatment of polystyrene porous material: swell 3 g of polystyrene porous material prepared in step (1) in c...

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Abstract

The invention discloses a preparation method and application of porous material with surface grafted beta-cyclodextrin, and belongs to the technical field of adsorbents. The preparation method comprises the following steps: preparing a polystyrene porous material by polymerizing concentrated emulsion, and then performing chloromethylation and amination reaction, feeding amino group into the surface of the polystyrene porous material, chemically modifying beta-cyclodextrin, feeding carboxyl group into the beta-cyclodextrin molecule, immersing the surface aminated polystyrene porous material in water solution of the carboxylated beta-cyclodextrin, reacting for 12-72 hours at 20-60 DEG.C under vacuum pumping condition to obtain the porous material with surface chemically grated beta-cyclodextrin. The porous material not only maintains the specific supermolecule performance of parent molecule, but also has unique macromolecule effect; since the cyclodextrin is starch fermentation product and good in environment compatibility, the cyclodextrin can be used for treating wastewater containing organic pollutant after being modified, the organic pollutant in the wastewater can be effectively removed, and the cyclodextrin is an ideal environment-friendly adsorbent.

Description

technical field [0001] The invention provides a method for preparing a porous material surface chemically grafted with β-cyclodextrin, which belongs to the technical field of adsorbents. Background technique [0002] The use of phenolic compounds is quite extensive, and the amount of use is increasing day by day. The degree of environmental pollution by phenolic wastewater is becoming more and more serious, and the harm to human beings is also gradually deepening. It is precisely because of the high toxicity and refractory characteristics of phenolic compounds in wastewater that it has become a recognized worldwide problem in the field of water treatment and has also attracted the attention of various countries. At present, the treatment technologies for phenol-containing wastewater at home and abroad include physical extraction and adsorption, chemical oxidation and biological transformation. However, due to high cost and renewable issues, many conventional methods for tre...

Claims

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Application Information

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IPC IPC(8): C08G81/02C08F212/08C08F2/30C08F8/32C08F8/24C08B37/16C08J9/42C08J9/36B01J20/26B01J20/30C02F1/28
Inventor 励杭泉张敬张晨杜中杰邹威
Owner BEIJING UNIV OF CHEM TECH
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