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Covalent organic framework material and preparation method thereof

A technology of covalent organic framework and reactive monomers, applied in separation methods, chemical instruments and methods, and other chemical processes, can solve the problems of volatile organic compound emissions, long reaction time, and complicated operation, and achieve convenient recycling and reuse , short reaction time, simple operation

Active Publication Date: 2018-06-29
JILIN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the method for preparing covalent organic framework materials is mainly high-temperature solvothermal method, which needs to be carried out in a closed system at a relatively high temperature (85-200 ° C), which requires high energy consumption, harsh reaction conditions, complicated operation, and long reaction time. Long (3-7 days) with volatile organic compound (VOC) emissions
The high-temperature solvothermal method is extremely unfavorable for the mass production and wide application of covalent organic framework materials in industry

Method used

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  • Covalent organic framework material and preparation method thereof
  • Covalent organic framework material and preparation method thereof
  • Covalent organic framework material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Example 1 Preparation of 3D-IL-COF-1 covalent organic framework material by 1-butyl-3-methylimidazole bistrifluoromethanesulfonimide salt

[0043] Weigh 21.6 mg of tetrakis(formylphenyl)methane and 10.8 mg of p-phenylenediamine, grind them evenly, add the mixture into a 5 mL centrifuge tube, add 100 μL of 1-butyl-3-methylimidazole bistrifluoromethanesulfonyl Mix the amine salts evenly, keep the reaction at room temperature for 3 minutes, wash and dry with ethanol and acetone after the reaction, and obtain a light yellow powder.

[0044] Its product XRD and simulated powder XRD diffraction patterns are as follows figure 1 , it can be seen that the simulated spectrum and the product spectrum are consistent.

Embodiment 2

[0045] Example 2 Preparation of 2D-IL-COF-1 covalent organic framework material by 1-butyl-3-methylimidazole bistrifluoromethanesulfonimide salt

[0046] Weigh 14.0mg of 2,4,6-trihydroxybenzene-1,3,5-tricarbaldehyde and 10.8mg of p-phenylenediamine, grind them evenly, add the mixture into a 5mL centrifuge tube, add 100μL of 1-butyl-3-formaldehyde The imidazole bis-trifluoromethanesulfonimide salt was mixed uniformly and kept at room temperature for 12 hours. After the reaction, it was washed and dried with acetone to obtain an orange-yellow powder.

[0047] Its product XRD and simulated powder XRD diffraction patterns are as follows figure 2 , it can be seen that the simulated spectrum and the product spectrum are consistent.

Embodiment 3

[0048] Example 3 Preparation of 2D-IL-COF-2 covalent organic framework material by 1-butyl-3-methylimidazole bistrifluoromethanesulfonimide salt

[0049] Weigh 25.0mg 1,4-terephthalic diboronic acid and 16.0mg 2,3,6,7,10,11-hexahydroxytriphenylene, grind evenly, add the mixture into a 5mL centrifuge tube, add 100μL 1-butyl- 3-Methylimidazole bistrifluoromethanesulfonyl imide salt, mixed evenly, kept at 60°C for 12 hours, washed with acetone and dried after the reaction to obtain a light gray powder.

[0050] Its product XRD and simulated powder XRD diffraction patterns are as follows image 3 , it can be seen that the simulated spectrum and the product spectrum are consistent.

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Abstract

The invention discloses a covalent organic framework material and a preparation method thereof and belongs to the technical field of preparation of covalent organic framework materials. Multiple covalent organic framework materials are quickly synthesized under a room temperature and an open system by utilizing ionothermal reaction, and include a Schiff-base type covalent organic framework material and a boric-acid type covalent organic framework material, and also include covalent organic framework materials with two-dimensional and three-dimensional structures. The synthetic method has the advantages of short reaction time, low energy consumption, no pollution of volatile organic matters, no additive, simple operation and the like. Ironic liquid can be reused for at least three times after being simply filtered and separated. The covalent organic framework material synthesized by the method has potential application in the aspects of gas storage and separation and the like because ofloading the ironic liquid.

Description

technical field [0001] The invention belongs to the technical field of preparation of covalent organic framework materials, and in particular relates to covalent organic framework materials and a preparation method thereof. Background technique [0002] Covalent Organic Frameworks (Covalent Organic Frameworks) is a porous crystalline polymer with a periodic network structure formed by the connection of organic monomers through covalent bonds. Covalent organic frameworks have the characteristics of regular channels, low density, high crystallinity, and good stability, and have a wide range of potential applications in gas storage and separation, catalysis, and optoelectronics. [0003] Ionic liquids are a class of compounds that are liquid at or near room temperature (<100°C) and are composed entirely of ions. They have extremely low volatility, a wide liquid range, are non-flammable, and have special solubility for many inorganic and organic species. And other characteri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G83/00B01J20/22B01D53/02
CPCB01D53/02B01D2257/504B01J20/226C08G83/008Y02C20/40
Inventor 方千荣管新宇裘式纶
Owner JILIN UNIV
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