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Mechanical preparation method of aromatic polyimide porous material

A porous material, polyimine technology, applied in the field of mechanical preparation of aromatic polyimide porous materials, can solve the problems of long reaction time and high energy consumption, and achieve the effect of short time consumption

Active Publication Date: 2017-05-10
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This preparation method usually adopts solvothermal method, which requires high temperature and high pressure and a large amount of organic solvent, and has certain requirements for equipment.
Simultaneously, the reaction time of this method is longer, and energy consumption is big

Method used

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  • Mechanical preparation method of aromatic polyimide porous material
  • Mechanical preparation method of aromatic polyimide porous material
  • Mechanical preparation method of aromatic polyimide porous material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Place two monomers of trimesic aldehyde (81.07mg, 0.5mmoL) and 1,5-naphthalenediamine (118.65mg, 0.75mmoL) in an agate mortar (75mm inner diameter), and add dimethylformamide and Each 0.2 mL of 6 mol / L acetic acid solution was then ground at room temperature using a pestle. After grinding, it was washed with anhydrous acetone in a Soxhlet extraction device for 48 hours to remove unreacted raw materials and oligomers. Finally, it was dried in a vacuum oven at 50°C for two days to obtain an aromatic polyimide porous material. . The yield is 28.5%, and the BET specific surface area is 5.7m 2 / g.

Embodiment 2

[0042] Put the two monomers of trimesic aldehyde (81.07mg, 0.5mmoL) and p-phenylenediamine (81.11mg, 0.75mmoL) in an agate mortar (75mm inner diameter), and add dimethylformamide and 6mol / L dropwise The acetic acid solution was 0.2 mL each, and then ground at room temperature using a pestle. After grinding, it was washed with anhydrous acetone in a Soxhlet extraction device for 48 hours to remove unreacted raw materials and oligomers. Finally, it was dried in a vacuum oven at 50°C for two days to obtain an aromatic polyimide porous material. . The yield is 38.6% and the BET specific surface area is 15.4m 2 / g.

Embodiment 3

[0044] Put the two monomers of trimesic aldehyde (81.07mg, 0.5mmoL) and m-phenylenediamine (81.11mg, 0.75mmoL) in an agate mortar (75mm inner diameter), and add dimethylformamide and 6mol / L dropwise The acetic acid solution was 0.2 mL each, and then ground at room temperature using a pestle. After grinding, it was washed with anhydrous acetone in a Soxhlet extraction device for 48 hours to remove unreacted raw materials and oligomers. Finally, it was dried in a vacuum oven at 50°C for two days to obtain an aromatic polyimide porous material. . The yield is 41.9%, and the BET specific surface area is 30m 2 / g.

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Abstract

The invention relates to a mechanical preparation method of an aromatic polyimide porous material. The method comprises the following steps: placing two monomers of benzenetricarboxaldehyde and aromatic diamine in a mortar; dropwise adding dimethylformamide and an acetic acid solution; grinding at the room temperature for 1 to 4 hours; then washing and drying to obtain the porous material. By adopting a mechanical synthesis method, a dehydration condensation reaction is carried out between an aldehyde group and an amine group to produce the aromatic polyimide porous material; the aromatic polyimide porous material has application potentials on the aspects of gas storage and separation, supercapacitors, catalyst carriers and sensors.

Description

Technical field [0001] The invention belongs to the field of preparation of porous materials, and particularly relates to a mechanical preparation method of aromatic polyimine porous materials. Background technique [0002] Porous material is a material with a network structure composed of interpenetrating or closed pores. According to different element composition and bonding methods, porous materials are divided into three types of porous materials: inorganic, inorganic-organic hybrid and pure organic. Generally speaking, inorganic porous materials and inorganic-organic hybrid porous materials, such as activated carbon, molecular sieves, etc., cannot design their molecular structure and cannot adjust their chemical functions. Organic porous materials are emerging porous materials. Organic primitives composed of light elements are formed by covalent bonds. Therefore, they have the advantages of rich skeleton composition, strong modification, good stability, high specific surfac...

Claims

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Application Information

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IPC IPC(8): C08G12/08B01J20/26B01J20/30B01D53/02H01G11/00B01J32/00
CPCY02E60/13C08G12/08B01D53/02B01J20/262B01J20/28054B01J32/00H01G11/00
Inventor 廖耀祖李佳欢
Owner DONGHUA UNIV
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