Method for preparing ordered mesoporous carbon with organic mould plate method

A technology of ordered mesoporous carbon and organic template, applied in the field of ordered mesoporous carbon prepared by organic template method, can solve the problems of difficulty in maintaining ordered structure, easy collapse and destruction, small carbon pore size, etc. The effect of high rate, small volume shrinkage and collapse

Inactive Publication Date: 2009-02-18
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

As we all know, phenolic resins synthesized in acidic or neutral medium generally have a linear or low-molecular-weight bulk network structure, and the structural polymer is easily collapsed and destroyed during further pyrolysis into carbon, and it is difficult to maintain the original organic-organic assembly The ordered structure of the body increases the difficulty of preparing ordered mesoporous carbon, and the obtained carbon has a smaller pore size.

Method used

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  • Method for preparing ordered mesoporous carbon with organic mould plate method
  • Method for preparing ordered mesoporous carbon with organic mould plate method
  • Method for preparing ordered mesoporous carbon with organic mould plate method

Examples

Experimental program
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Effect test

Embodiment 1

[0023] The steps for synthesizing ordered mesoporous carbon materials using resorcinol-formaldehyde resin as a carbon precursor, triblock copolymer F108 as a structure-directing agent, sodium hydroxide as a catalyst, and ethanol as a solvent are as follows:

[0024] Dissolve 2g of resorcinol in 20ml of ethanol, stir magnetically at room temperature, and after it is completely dissolved, add 4.4ml of formaldehyde solution with a mass fraction of 37% dropwise (the molar ratio of resorcinol to formaldehyde is 1:3 ), followed by the addition of 0.026 g of solid NaOH, and continued stirring for about 1 h. Dissolve 2.5g of F108 (the mass ratio of F108 to resorcinol is 2.5:2) in 20ml of ethanol, and magnetically stir it in a water bath at 30°C until it is completely dissolved, then add the above-mentioned ethanol solution containing resorcinol and formaldehyde , After mixing, stir in a water bath for 1.5h to form a light reddish brown homogeneous solution. The measured pH value of t...

Embodiment 2

[0027] The operation method is the same as that in Example 1, except that the dosage of F108 is 1.5 g (the mass ratio of F108 to resorcinol is 1.5:2), and finally ordered mesoporous carbon is obtained. XRD analysis shows that the obtained material is a mesoporous carbon with a cubic hole structure.

Embodiment 3

[0029] The operation method is the same as that in Example 1, except that the amount of F108 used is 3.5 g (the mass ratio of F108 to resorcinol is 3.5:2), and finally mesoporous carbon is obtained. XRD analysis shows that the obtained material is a mesoporous carbon with a cubic hole structure.

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Abstract

The invention relates to the technical field of the inorganic nanometer material, and relates to a method for preparing the ordered mesoporous carbon with an organic template method. Segmented copolymer is adopted as the structural guiding agent, and the resin is adopted as the precursor of the carbon, and the solid base is adopted as the catalyst, organic/organic compound film is assembled in the insoluble agent through the sol-gel technique, and then the film is charred to be the ordered mesoporous carbon. The organic/organic compound that is obtained by assembling the segmented copolymer and the resin in the alkaline insoluble agent has more stable tri-dimensional cross-linked network structure than the synthesized product in the acid body system; the direct charring volume retraction and collapse is small, and the ordered mesoporous carbon is easier to be obtained.

Description

Technical field: [0001] The invention belongs to the technical field of inorganic nanometer materials, and relates to a method for preparing ordered mesoporous carbon by an organic template method. Background technique: [0002] Ordered Mesoporous Carbon (OMC) is a kind of carbon material with regular pore arrangement, pore diameter between 2nm and 50nm, and uniform pore size. Since Liu Long of South Korea first reported the synthesis of ordered mesoporous carbon using ordered mesoporous silicon as a hard template in 1999, its research and development have attracted great attention from academia and business circles. Ordered mesoporous carbon materials not only have the characteristics of high specific surface area and narrow pore size distribution, but also have hydrophobicity, chemical inertness, good hydrothermal stability, high mechanical strength and high conductivity, so that they can be used not only for separation, adsorption Organic macromolecules, and have potenti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/02C01B31/08
Inventor 宋怀河李丽霞刘长义陈晓红
Owner BEIJING UNIV OF CHEM TECH
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