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Cyclodextrin porous adsorption material as well as preparation method and application thereof

A porous adsorption material and cyclodextrin technology, which is applied in chemical instruments and methods, adsorption water/sewage treatment, and other chemical processes, can solve the problem of small specific surface area, further improvement of adsorption effect, and few types of active functional group binding sites. etc. to achieve high specific surface area, low recycling cost and safe process

Active Publication Date: 2021-06-11
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the existing insoluble cyclodextrin-based compounds have small specific surface area and few types of active functional group binding sites, and their adsorption effect on pollutants in wastewater needs to be further improved.

Method used

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  • Cyclodextrin porous adsorption material as well as preparation method and application thereof

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Embodiment 1

[0033] In this embodiment, the preparation method of cyclodextrin porous adsorption material comprises the following steps:

[0034] (1) Place 180ml of N,N-dimethylformamide (DMF) in a round-bottomed flask under ice bath, then add β-cyclodextrin (β-CD, 12g), acrylic anhydride (2.4g) Add triethylamine (2g) into a round bottom flask, and carry out dehydration condensation reaction after stirring. The reaction temperature is 0°C, the reaction time is 48h, the stirring speed is 500rpm, and the molar ratio of β-CD to acrylic anhydride is 1:2 , The molar ratio of β-CD and triethylamine added is 1:2.

[0035] (2) After the reaction of step (1) finishes, sodium p-styrene sulfonate (2g) and ammonium persulfate (2.2g) are added in the reaction solution, and the temperature of the reaction mixed solution is adjusted, and cross-linking polymerization occurs at a certain temperature The cyclodextrin cross-linked polymer was prepared by reaction, the reaction temperature was 80°C, the feed...

Embodiment 2

[0039] In this embodiment, the preparation method of cyclodextrin porous adsorption material comprises the following steps:

[0040] (1) 200ml of cyclohexane was placed in a round-bottomed flask under ice-cooling, and then β-cyclodextrin (β-CD, 12g), acrylic anhydride (2.4g) and triethylamine (2g) were added to In the round bottom flask, the dehydration condensation reaction is carried out by stirring, the reaction temperature is 0°C, the reaction time is 48h, the stirring speed is 1000rpm, the molar ratio of β-CD and acrylic anhydride is 1:2, β-CD and triethylamine are added The molar ratio of the amounts is 1:2.

[0041](2) After the reaction of step (1) finishes, sodium p-styrene sulfonate (2g) and ammonium persulfate (2.2g) are added in the reaction solution, and the temperature of the reaction mixed solution is adjusted, and cross-linking polymerization occurs at a certain temperature The cyclodextrin cross-linked polymer was prepared by reaction, the reaction temperatur...

Embodiment 3

[0045] In this embodiment, the preparation method of cyclodextrin porous adsorption material comprises the following steps:

[0046] (1) Place 200ml of N,N-dimethylformamide (DMF) in a round-bottomed flask under an ice bath, then add β-cyclodextrin (β-CD, 12g), acrylic anhydride (3.6g) Add triethylamine (2g) into a round bottom flask, and carry out dehydration condensation reaction after stirring. The reaction temperature is 0°C, the reaction time is 48h, the stirring speed is 800rpm, and the molar ratio of β-CD to acrylic anhydride is 1:3 , The molar ratio of β-CD and triethylamine added is 1:2.

[0047] (2) After the reaction of step (1) finishes, sodium p-styrene sulfonate (3g) and ammonium persulfate (2.2g) are added in the reaction solution, and the temperature of the reaction mixed solution is adjusted, and cross-linking polymerization occurs at a certain temperature The cyclodextrin crosslinked polymer was prepared by reaction, the reaction temperature was 80°C, the fe...

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Abstract

The invention relates to the technical field of functional porous materials, and provides a cyclodextrin porous adsorption material as well as a preparation method and application thereof. The preparation method comprises the following steps: carrying out a dehydration condensation reaction on cyclodextrin and acrylic anhydride, and then carrying out a cross-linking polymerization reaction with an olefin micromolecular monomer, so as to prepare the cyclodextrin porous adsorption material. The preparation method disclosed by the invention is simple in steps and relatively mild in reaction conditions; the obtained cyclodextrin porous adsorption material has a hierarchical pore structure, a relatively high specific surface area and various active binding sites, and can be used for efficiently removing pollutants in wastewater; and the cyclodextrin porous adsorption material can be simply recycled, and the cyclodextrin porous adsorption material can still keep a relatively high adsorption effect after 20 times of cyclic adsorption.

Description

technical field [0001] The invention relates to the technical field of functional porous materials, in particular to a cyclodextrin porous adsorption material and its preparation method and application. [0002] Professional terms: CD refers to cyclodextrin, α-CD refers to α-cyclodextrin, β-CD refers to β-cyclodextrin, γ-CD refers to γ-cyclodextrin, DMF refers to N, N-dimethylformamide, AIBN refers to azobisisobutyronitrile. Background technique [0003] The preparation method of cyclodextrin is simple. It is a series of cyclic oligosaccharides produced by amylose under the action of cyclodextrin glucosyltransferase produced by Bacillus. Its special cavity structure can be combined with organic, Inorganic molecules form host-guest inclusions, which are widely used in food, environment, medicine, polymer synthesis, cosmetics, chemical detection and other fields. However, cyclodextrin is easily soluble in water, which limits its application in wastewater treatment. Therefor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26B01J20/30C02F1/28
CPCB01J20/267C02F1/285C02F1/286B01J2220/4825B01J2220/4812Y02W10/37
Inventor 刘银丽李妮
Owner ZHEJIANG SCI-TECH UNIV
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