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Porous organic material/polymer composite membrane and its preparation method and application

A technology of porous organic materials and polymer membranes, applied in chemical instruments and methods, membrane technology, semipermeable membrane separation, etc., can solve the problems of poor compatibility and easy agglomeration of porous materials, and achieve the goal of overcoming poor compatibility and compatibility Good performance, improve the effect of pervaporation performance

Active Publication Date: 2021-11-09
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the main problem at present is that the porous material is poorly compatible with the membrane material, easy to agglomerate, and the hydrophobicity needs to be further improved, so choosing a suitable filling material is very important for improving the separation performance of the membrane.

Method used

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  • Porous organic material/polymer composite membrane and its preparation method and application
  • Porous organic material/polymer composite membrane and its preparation method and application
  • Porous organic material/polymer composite membrane and its preparation method and application

Examples

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preparation example Construction

[0038] The preparation method of porous organic material / polymer composite membrane comprises the following steps:

[0039] (1) dissolving the aromatic reactants and adding a catalyst, condensing and refluxing at 50-80°C, heating and stirring for 6-24 hours, ultrasonically washing with different solvents and filtering the product, and drying to obtain the porous organic material;

[0040] (2) Add the polymer membrane material into the organic solvent, stir at 50-90°C to form a membrane material solution, take another organic solvent, and ultrasonically disperse the porous organic material in it to form a uniform suspension, and then the membrane Mix the material solution and the suspension, and continue to stir at 50-90°C until uniform to form a casting solution, and let it stand for defoaming;

[0041] (3) Scraping and forming the casting solution to obtain the porous organic material / polymer composite membrane.

[0042] Preferably, in step (1):

[0043] Aromatic reactants ...

Embodiment 1

[0054] A porous organic material / polymer composite membrane, which comprises polymer membrane material and porous organic material dispersed therein. The porous organic material is a hypercrosslinked polymer prepared by the reaction of aromatic reactants under the action of a catalyst. The polymer membrane material is polyether block copolyamide (PEBA). The mass fraction of the porous organic material in the composite membrane is 1 ~30%, the composite membrane can be applied to the pervaporation of phenol-containing solution preferentially permeating phenol. The specific preparation steps of the composite membrane are as follows:

[0055] (1) Preparation of porous organic materials

[0056] Weigh 40mmol benzyl alcohol, add a certain amount of dichloroethane to dissolve, weigh 80mmol anhydrous ferric chloride and add it to the reactant, heat and stir at constant temperature, N 2 Protect and add condensation to reflux for 12h. After the reaction, the product was filtered, wash...

Embodiment 2

[0063] A porous organic material / polymer composite membrane, which comprises polymer membrane material and porous organic material dispersed therein. The porous organic material is a super-crosslinked polymer prepared by aromatic reactants under the action of a catalyst. The polymer film material is polyurethane (PU). The mass fraction of the porous organic material in the composite film is 1 to 30%. The composite film It can be applied in pervaporation separation where phenol-containing solution preferentially permeates phenol. The specific preparation steps of the composite membrane are as follows:

[0064] (1) Preparation of porous organic materials

[0065] Weigh 40mmol benzyl alcohol, add a certain amount of dichloroethane to dissolve, weigh 80mmol anhydrous ferric chloride and add it to the reactant, heat and stir at constant temperature, N 2 Protect and add condensation to reflux for 12h. After the reaction, the product was filtered, washed with tetrahydrofuran, hydro...

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Abstract

The invention relates to a porous organic material / polymer composite membrane and its preparation method and application. The preparation of the composite membrane is to prepare a porous organic material through chemical synthesis, and then combine the porous organic material with the polymer membrane material in an organic solvent. Mix to form a casting solution, obtain a porous organic material / polymer composite membrane by scraping the membrane, and apply it to the pervaporation separation of the phenol-containing solution preferentially permeating the phenol. Compared with the prior art, the present invention utilizes the good compatibility, pore structure and adsorption selectivity to phenols of the porous organic material, applies the porous organic material to the pervaporation separation of the phenol-containing solution preferentially permeating the phenol, and significantly improves phenol / water separation effect.

Description

technical field [0001] The invention relates to the field of pervaporation membrane separation, in particular to a porous organic material / polymer composite membrane and its preparation method and application. Background technique [0002] Phenol-containing wastewater is a kind of industrial toxic wastewater with extensive pollution, large amount of wastewater and refractory degradation. Its discharge must implement strict standards. According to the national standard: China allows the discharge standard of phenolic substances to be 0.5mg L -1 , the maximum allowable discharge concentration of volatile phenols in normal drinking water is 0.001mg·L -1 . According to this requirement, effective treatment measures must be taken for phenolic wastewater. Common methods for treating phenol-containing wastewater: one is to improve the process, reduce the concentration of phenol or reduce the amount of wastewater; the other is to recycle or treat phenol-containing wastewater. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D71/80B01D71/06B01D69/12B01D67/00
CPCB01D67/0006B01D69/12B01D71/06B01D71/80
Inventor 伍艳辉杨磊唐汪洋黄翰生
Owner TONGJI UNIV
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