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Organic pore-borne material generated by self-assembly of organic and organic, and preparation method

A mesoporous material and self-assembly technology, applied in the field of polymer materials, can solve the problems of material order, low specific surface area and pore volume, no covalent bond network structure, complex synthesis methods, etc.

Inactive Publication Date: 2005-11-16
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, compared with mesoporous silica molecular sieve materials, its synthesis method is more complicated, and the degree of order, specific surface area and pore volume of the obtained materials are far lower than those of mesoporous silica materials.
In addition, the resulting mesoporous polymer materials do not have a covalent bond network structure, and there are only weak interactions such as π-π bonds, hydrogen bonds, and van der Waals bonds between molecules, and their stability to solvents and heat is poor. , thus greatly limiting the application of organic mesoporous materials
The pore size and specific surface area of ​​ordered mesoporous polymer materials have not been reported so far

Method used

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  • Organic pore-borne material generated by self-assembly of organic and organic, and preparation method
  • Organic pore-borne material generated by self-assembly of organic and organic, and preparation method
  • Organic pore-borne material generated by self-assembly of organic and organic, and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Embodiment 1, the preparation of polymer precursor:

[0041] The molar ratio of reaction material: phenol (cresol, xylenol): formaldehyde (furfural)=1: (0.8-2.1)

[0042] Reaction temperature: 65-70°C; Reaction time: 0.5-2 hours;

[0043] PH=1-3 or 7-11

[0044] Acidic catalysts: chlorosulfonic acid, hydrochloric acid, perchloric acid, sulfuric acid, oxalic acid

[0045] Basic catalyst: NH 3 ·H 2 O, NaOH, KOH, Ba(OH) 2 ;

[0046] The example scheme is as follows:

[0047] Melt 1.0g phenol at 40-42°C, add 0.21g 20% ​​NaOH aqueous solution at this temperature and stir for ten minutes, add 1.7g 37% formaldehyde aqueous solution, heat up to 70°C for 1 hour, cool to room temperature, and use 0.6M HCl The solution adjusts the pH value of the solution to 6-7, dehydrating under reduced pressure at a temperature lower than 50°C.

Embodiment 2

[0048] Example 2, at room temperature (25°C), 1.0g EO 106 PO 70 EO 106 Dissolve in 20g of ethanol, stir to obtain a clear solution, add phenolic resin polymer prepolymer (prepared from 0.61g phenol and 0.39g formaldehyde) to this solution, stir for 5 minutes, make it evenly dispersed, and form a uniform mixture. Transfer the solution to a watch glass, let it stand at 25°C to volatilize the ethanol, and after 8 hours, the ethanol is completely volatilized, and then placed in an oven at 100°C for 24 hours to further polymerize the polymer material. The polymerized material was calcined at 350° C. for 5 hours under a nitrogen atmosphere to remove the surfactant, and the polymer mesoporous material was obtained. The material has a pore diameter of 6.8nm and a pore volume of 0.63cm 3 / g, the specific surface area is 652m 2 / g, the pore space symmetry of the material is a hexagonal p6m structure.

Embodiment 3

[0049] Example 3, at room temperature (25°C), 1.0g EO 106 PO 70 EO 106 Dissolve in 30g of ethanol, stir to obtain a clear solution, add phenolic resin polymer prepolymer (prepared from 0.61g phenol and 0.39g formaldehyde) to this solution, stir for 5 minutes, make it evenly dispersed, and form a uniform mixture. Transfer the solution to a watch glass, let it stand at 15°C to volatilize the ethanol, and after 8 hours, the ethanol is completely volatilized, and then placed in a 1000 oven for 48 hours to further polymerize the polymer material. The polymerized material was treated with 48% H 2 SO 4 Refluxing at 95°C for 24 hours to extract and remove the surfactant to obtain a polymer mesoporous material. This material has a pore volume of 071cm 3 / g, the specific surface area is 1042m 2 / g, the pore space symmetry of the material is a hexagonal p6m structure.

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Abstract

A process for preparing organic meso-porous material by organic-organic self-assembly features that the surfactant or organic high-molecular material is used as the structure guider, and the high-molecular precursor and said structure guider take part in organic-organic self-assembly. Said meso-porous material has ordered mesoporous arteries with different structures, high pore volume and high specific surface area.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a class of organic mesoporous materials synthesized by organic-organic self-assembly (including polymer mesoporous materials and carbon mesoporous materials) and a preparation method thereof. technical background [0002] Highly ordered mesoporous materials have important application prospects in the fields of catalysis, adsorption, separation, mass transport, and chemical sensing. In recent years, the research on mesoporous materials has developed rapidly. Using various surfactants as templates, people have synthesized mesoporous silica molecular sieve materials with various structures, and proposed various new synthetic routes. At present, the synthesis of silica mesoporous molecular sieves has become mature, and a variety of mesoporous silicas have achieved large-scale industrial production. These mesoporous silica materials have high thermal and mechani...

Claims

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Application Information

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IPC IPC(8): C08J3/24
Inventor 赵东元孟岩顾栋张福强
Owner FUDAN UNIV
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