Polystyrene group hierarchical mesoporous carbon material, preparation method and application thereof

A polystyrene and polystyrene solution technology, applied in the field of materials, can solve the problems of unfriendly environment, low porosity, harsh conditions, etc., and achieve the effects of simple process, low equipment requirements, and simple preparation process

Inactive Publication Date: 2010-04-28
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages are: (1) the preparation process involves sulfonation reaction, and the conditions are harsh; (2) a large amount of sulfur-containing toxic gas is emitted during carbonization, which is not friendly to the environment; (3) the skeleton collapses seriously after carbonization, and the nanostructure cannot be effectively inherited, and the pores low rate
These defects have seriously hindered the development of polystyrene as a nanostructured carbon material.

Method used

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  • Polystyrene group hierarchical mesoporous carbon material, preparation method and application thereof
  • Polystyrene group hierarchical mesoporous carbon material, preparation method and application thereof
  • Polystyrene group hierarchical mesoporous carbon material, preparation method and application thereof

Examples

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Embodiment 1

[0027] A polystyrene-based hierarchical porous carbon material and a preparation method thereof, including the following steps:

[0028] (1) In a 250ml container, add 5.0g linear polystyrene (commercial linear polystyrene resin, model: PS525, Sinopec Guangzhou Branch, the same below) and 100ml anhydrous carbon tetrachloride, stir at room temperature After it is completely dissolved, a polystyrene carbon tetrachloride solution with a concentration of 5% is obtained;

[0029] (2) Add 12.0g of reaction catalyst anhydrous aluminum trichloride and 100ml of anhydrous carbon tetrachloride into a 250ml reaction kettle, set the temperature of the constant temperature water bath at 75℃, and start stirring after condensed water is added while loading Drying tube for anhydrous calcium chloride; after refluxing for 40 minutes, slowly and uniformly (100ml solution for about 30 seconds) add the above polystyrene solution to it, heating to reflux under magnetic stirring, and continuous Friedel-Cra...

Embodiment 2

[0035] A polystyrene-based hierarchical porous carbon material and a preparation method thereof, including the following steps:

[0036] (1) In a 250ml container, add 5.0g linear polystyrene and 100ml anhydrous carbon tetrachloride successively, stir at room temperature until it is completely dissolved to obtain a polystyrene carbon tetrachloride solution with a concentration of 5%;

[0037] (2) Add 12.0g of reaction catalyst anhydrous aluminum trichloride and 100ml of anhydrous carbon tetrachloride into a 250ml reaction kettle, set the temperature of the constant temperature water bath at 75℃, and start stirring after condensed water is added while loading Drying tube for anhydrous calcium chloride; after refluxing for 40 minutes, slowly and uniformly (100ml solution for about 30 seconds) add the above polystyrene solution to it, heating to reflux under magnetic stirring, and continuous Friedel-Crafts reaction for 48 hours;

[0038] (3) Add 100ml of a mixed solvent of 95% ethanol + ...

Embodiment 3

[0041] A polystyrene-based hierarchical porous carbon material and a preparation method thereof, including the following steps:

[0042] (1) In a 250ml container, add 5.0g linear polystyrene and 100ml anhydrous carbon tetrachloride successively, stir at room temperature until it is completely dissolved to obtain a polystyrene carbon tetrachloride solution with a concentration of 5%;

[0043] (2) Add 12.0g of reaction catalyst anhydrous aluminum trichloride and 100ml of anhydrous carbon tetrachloride into a 250ml reaction kettle, set the temperature of the constant temperature water bath at 75℃, and start stirring after condensed water Drying tube for anhydrous calcium chloride; after refluxing for 40 minutes, slowly and uniformly (100ml solution for about 30 seconds) add the above polystyrene solution to it, heating to reflux under magnetic stirring, and continuous Friedel-Crafts reaction for 48 hours;

[0044] (3) Add 100ml of a mixed solvent of 95% ethanol + water (v / v=4:1) to term...

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Abstract

The invention discloses a polystyrene group hierarchical mesoporous carbon material and a preparation method thereof. The method takes linear polystyrene as raw material, anhydrous aluminum chloride as catalyst and anhydrous carbon tetrachloride as solvent and cross linking agent; and after Friedel-Crafts crosslinking reaction, the polystyrene group hierarchical mesoporous carbon material can be obtained by hydrolyzing, washing, drying and charring. The invention not only has simple and environment-friendly preparation technique, but also ensures the obtained carbon material to have unique hierarchical nano structure; primitive carbon colloidal particles contain three-dimensional network micropores, and are stacked in a compact or loose way to respectively form mesopores and large-pores; and nano pore channels at different levels are closely connected with each other.

Description

Technical field [0001] The invention belongs to the technical field of materials, and particularly relates to a preparation method and application of a hierarchical porous carbon material prepared by using linear polystyrene resin. Background technique [0002] Using polystyrene as the carbon source for preparing nanostructured carbon materials has advantages: (1) Polystyrene is one of the five general-purpose resins with huge annual output; (2) Polystyrene can undergo Friedel-Crafts reaction to form high pores High rate of cross-linking network structure. [0003] In order to convert polystyrene into nano-structured carbon materials, in addition to using the Friedel-Crafts reaction to build enough cross-linking bridges, the synthesized polystyrene gel skeleton should also contain an appropriate amount of oxygen elements or oxygen-containing functional groups. At present, the nanoporous materials obtained by using polystyrene, although they contain methylene, p-xylylene, 4,4'-dime...

Claims

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Application Information

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IPC IPC(8): C01B31/02H01G4/008
Inventor 吴丁财邹冲符若文曾庆聪
Owner SUN YAT SEN UNIV
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