Method for preparing ordered mesoporous carbon material by direct self-assembly

An ordered mesoporous and self-assembly technology, applied in the field of material preparation, can solve the problems of a large number of solvents, pollute the environment, waste raw materials, etc., and achieve the effect of low cost, simple process and convenient operation

Inactive Publication Date: 2011-01-26
FUDAN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The process is simple and reproducible; however, the method requires a large amount of solvent, which pollutes the environment and wastes raw materials
In addition, this method requires a large-area container to volatilize, occupying a large amount of space, which also limits the large-scale production of this method.

Method used

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  • Method for preparing ordered mesoporous carbon material by direct self-assembly
  • Method for preparing ordered mesoporous carbon material by direct self-assembly
  • Method for preparing ordered mesoporous carbon material by direct self-assembly

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Preparation of organic polymer phenolic resin: Melt 92.0 g of phenol in a water bath at 49 °C, add 19.5 g of 20% NaOH aqueous solution by mass percentage, stir for 10 minutes, add 162.8 g of formaldehyde solution (37 wt %), at 70 Reflux for 1 hour at °C and cool to room temperature. Adjust the pH to about 7 with 2.0 M hydrochloric acid solution, place the reaction system in a water bath at 50 °C for vacuum distillation, remove the water, and obtain 71.5 g of organic polymer phenolic resin (molecular weight 200-500). Dissolve 71.5 g of organic polymers in about 20 g of absolute ethanol, centrifuge to remove NaCl crystals, place the reaction system in a water bath at 48 °C and distill off ethanol under reduced pressure to obtain a light brown liquid phenolic resin for later use.

Embodiment 2

[0039] Preparation of organic-organic mixture: 10.0 g of nonionic surfactant polyethylene oxide-polypropylene oxide-polyethylene oxide triblock copolymer (Pluronic F127) was added to 10.0 g of phenolic resin, at 35 Mechanical stirring (300 rpm) in a water bath at °C for 3 hours gave a yellow transparent viscous mixture. The SAXS spectrum proves that the obtained mixture has a certain ordered mesoscopic structure, indicating that non-ionic surfactants and organic polymer phenolic resins can self-assemble in this extremely concentrated organic-organic system. See SAXS spectrum figure 1 .

Embodiment 3

[0041] Preparation of cured polymer composites obtained by using plastic as a mold: 15.0 g of nonionic surfactant Pluronic F127 was added to 15.0 g of phenolic resin, and mechanically stirred (rotating at 300 rpm) in a water bath at 35 °C for 3 hours to obtain a yellow transparent Viscous mixture. The mixture was transferred into a plastic mold with a thickness of 0.9 cm and directly placed in an oven at 100 °C for 24 hours, cooled to room temperature, and the mold was removed to obtain a solidified polymer composite, as shown in the optical photo. optical photo see figure 2 .

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Abstract

The invention belongs to the technical field of material preparation, and particularly relates to a cheap method for preparing ordered mesoporous carbon by direct self-assembly. The method comprises the following steps of: directly dissolving a surfactant template agent into macromolecules to form a mixture, pouring the mixture into a die, and directly baking and curing the mixture at a certain temperature; and performing low-temperature hot polymerization and high-temperature carbonization on the cured sample to obtain the ordered mesoporous carbon material. The method has the advantages of easily-obtained raw materials, low cost, suitability for amplifying the synthesis process and the like and is environmentally friendly, and simple and convenient for operation.

Description

technical field [0001] The invention belongs to the technical field of material preparation, and in particular relates to a method for preparing ordered mesoporous carbon through direct self-assembly. technical background [0002] As a new type of material, ordered mesoporous carbon has unique structural characteristics such as uniform pore size distribution, large specific surface area and pore volume, and ordered pore structure. It also has excellent mechanical and thermal stability, and is absolutely Most chemical reactions appear inert. These characteristics make this kind of material have great application prospects in catalysis, adsorption, separation, hydrogen storage, electrochemistry and so on. [0003] In the past ten years, the research on mesoporous carbon materials has been vigorously developed. However, such materials are still in the stage of laboratory synthesis, which is difficult to meet the increasing demand for applications in many fields. Therefore, t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/02
Inventor 赵东元王金秀薛春峰吕盈盈屠波夏永姚华黎梁全顺
Owner FUDAN UNIV
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