Covalent organic framework membrane material and preparation method thereof

A technology of covalent organic frameworks and membrane materials, applied in the field of membrane separation, can solve the problems such as the inability to meet the needs of dye separation and the limited types of membrane materials, and achieve enhanced filtration and antibacterial properties, highly ordered, and large specific surface area. Effect

Inactive Publication Date: 2020-02-14
孝感市思远新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Membrane separation has the characteristics of high efficiency, energy saving, environmental protection, molecular level filtration, simple filtration process, and easy control. It is of great significance to develop new membrane materia

Method used

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  • Covalent organic framework membrane material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Add 16.6 parts of p-phenylenediamine, 10 parts of p-toluenesulfonic acid, 30 parts of distilled water in the beaker, stir for 5 minutes, then add 26 parts of trimethoxybenzenetrialdehyde, after stirring for 10 minutes, a mixed solvent is obtained, and the mixed solvent Spread it on a glass plate; program the temperature at 100°C and maintain it for 12 hours. After the mixed solvent is volatilized and dried, a film is obtained. Put the glass plate with the film in water, the film will peel off naturally, wash with distilled water several times, and dry for later use. .

Embodiment 2

[0017] Add 17.6 parts of dimethyl-p-phenylenediamine, 10 parts of p-toluenesulfonic acid, and 30 parts of distilled water in a beaker, stir for 5 minutes, then add 26 parts of m-trimethoxybenzenetrialdehyde, and stir for 10 minutes to obtain a mixed solvent. Spread the mixed solvent on a glass plate; program the temperature at 100°C and maintain it for 12 hours. After the mixed solvent evaporates and dries, a film is obtained. Put the glass plate with the film in water, the film will peel off naturally, and wash several times with distilled water , dry for later use.

Embodiment 3

[0019] Add 20.1 parts of dimethoxy-p-phenylenediamine, 10 parts of p-toluenesulfonic acid, and 30 parts of distilled water into a beaker, stir for 5 minutes, then add 26 parts of m-trimethoxybenzenetrialdehyde, and stir for 10 minutes to obtain a mixed solvent , spread the mixed solvent on a glass plate; the programmed temperature is maintained at 100°C for 12 hours, after the mixed solvent is volatilized and dried, a film is obtained, the glass plate with the film is put into water, the film is naturally peeled off, and washed with distilled water for several times, dry for later use.

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Abstract

The invention provides a covalent organic framework membrane material and a preparation method thereof, wherein the covalent organic framework membrane material comprises, by weight, 15-25 parts of ananiline compound, 5-15 parts of organic sulfonic acid, 20-30 parts of s-trimethoxybenzene trialdehyde and 25-35 parts of distilled water. The preparation method comprises: synthesizing a salt from ananiline compound and organic sulfonic acid; and reacting with s-trimethoxybenzene trialdehyde to synthesize a covalent organic framework membrane material. According to the invention, the covalent organic framework membrane material synthesized by the method is highly ordered in pore structure, adjustable in pore diameter and relatively large in specific surface area; and the membrane material isstable, keeps stable and is not degraded and damaged in conventional organic solvents (such as DMF, DMSO, dichloromethane, ethyl acetate, acetone and the like), and shows super-strong stability in hydrochloric acid with a concentration of up to 9 mol/L and a sodium hydroxide aqueous solution with a concentration of up to 9 mol/L.

Description

technical field [0001] The invention relates to the technical field of membrane separation, in particular to a covalent organic framework membrane material and a preparation method. Background technique [0002] Dye is an important fine chemical product, which is closely related to the basic necessities of human beings. With the rapid development of the dye industry, its production wastewater has become one of the main sources of water pollution; the currently recognized effective way to treat dye wastewater is: first Pretreatment and decolorization are carried out by physical and chemical methods to remove dye molecules with high biological toxicity and high chroma, and improve the biodegradability of wastewater, and then through subsequent biochemical treatment, comprehensive treatment. Among them, physical and chemical treatment as the pretreatment of dye wastewater is very critical. Physical and chemical methods such as adsorption, ion exchange, coagulation-flocculation,...

Claims

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Application Information

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IPC IPC(8): B01D71/06B01D69/02B01D67/00C02F1/44
CPCB01D71/06B01D69/02B01D67/0002C02F1/44B01D2325/48
Inventor 刘思
Owner 孝感市思远新材料科技有限公司
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