Ordered nano mesoporous carbon material of two-way connection and 3-D cubic structure and its preparing method

A technology of nano-mesoporous and mesoporous materials, applied in chemical instruments and methods, other chemical processes, etc.

Inactive Publication Date: 2003-06-25
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, for three-dimensional continuous mesoporous carbon materials, there is no relevant report

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Example 1, when sucrose is used as the carbon source, for the powder-like spatial symmetry of Ia3d large-pore ordered nano-mesoporous carbon material, the synthesis steps are as follows: 2.5g sucrose is dissolved in 0.28g concentrated sulfuric acid and In the solution formed by 12g of water; after a period of vigorous stirring, add 2g of FDU-5 powder and continue to stir for 8 hours; then place the mixture in a 70°C oven for 7 hours, and then transfer it to a 150°C oven for 7 hours; For the second filling, the amounts of sucrose, concentrated sulfuric acid and water used were 1.5 g, 0.16 g and 12 g, respectively. Subsequently, the obtained black solid substance was transferred to a tube furnace, and fired in a nitrogen atmosphere at 1000° C. for 7 hours to obtain a composite of carbon and silicon dioxide. Soak the composite with 10% HF solution for 24 hours, then filter, wash and dry to obtain a very light black powder, which is the desired nanometer mesoporous carbon m...

Embodiment 2

[0023] Embodiment 2, when using furfuryl alcohol as the carbon source, for the powdery spatial symmetry of the large-aperture ordered nano-mesoporous carbon material of Ia3d, its synthesis steps are as follows: 1.6g furfuryl alcohol is evenly dispersed in 10g ethanol; Add 2g of FDU-5 powder and continue to stir for 8 hours; then place the mixture in a 70°C oven for 7 hours, then transfer to a 150°C oven for 7 hours; then transfer the resulting black solid powder to a tube furnace, Calcined at 1000°C for 7 hours in a nitrogen atmosphere to obtain a composite of carbon and silicon dioxide. Soak the composite with 1.5 mol / L sodium hydroxide solution for 24 hours, then filter, wash and dry to obtain a very light black powder, which is the desired nanometer mesoporous carbon material. The material has a pore diameter of 5.7 nm and a pore volume of 0.91 cm 3 / g, the specific surface area is 915m 2 / g.

Embodiment 3

[0024]Example 3, another specific step of using phenol and formaldehyde to synthesize a large-aperture ordered nano-mesoporous carbon material with a spatial symmetry of Ia3d is as follows: 1g of FDU-5 powder doped with 5% aluminum is added to 1.7ml of phenol, Stir evenly; then heat to 130°C under vacuum conditions, so that phenol enters the pores of the mesoporous silica matrix material; then add 1.5ml formaldehyde to the above system, and place it in an oven at 130°C for 30 hours to form a phenolic tree A composite of ester and silicon dioxide; then transfer the resulting material to a tube furnace and bake it in a nitrogen atmosphere at 900°C for 6 hours to obtain a composite of carbon and silicon dioxide. The composite is soaked in 2mol / L sodium hydroxide solution for 48 hours, filtered, washed and dried to obtain the nanometer mesoporous carbon material. Its pore diameter is 5.9nm and the pore volume is 1.39cm 3 / g, the specific surface area is 957m 2 / g.

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Abstract

Macroporous ordered nano mescoporous carbon material with spatial symmetry of Ia3d is prepared through the process of: mixing carbon source and solvent homogeneously with SiO2 mesoporous material with 3D connection and double continuous pore canal as template agent; heat treatment to evaporate solvent; high temperature roasting under protective nitrogen to carbonate carbon source completely; eliminating SiO2 template agent, filtering, washing and drying. The material has two-way connecting and 3D ordered pore and canal structure, large pore diameter, great specific surface area and great pore volume, and is powder, sheet or film.

Description

technical field [0001] The invention belongs to the technical field of inorganic materials, and specifically relates to an ordered nanometer mesoporous carbon material with large aperture, high specific surface area, two-way connection and three-dimensional cubic structure and a preparation method thereof. technical background [0002] With the vigorous development of the field of nano-mesoporous materials, nano-mesoporous carbon materials have attracted more and more attention from scientists and researchers. This is mainly because this type of material has its own unique advantages in electronics, catalysis, and hydrogen storage. The ordered nano-mesoporous carbon materials show more special properties because of their regular pore arrangement, which attracts many scientists to carry out the synthesis of such materials. At present, some people have used porous materials as hard templates to synthesize ordered nano-mesoporous carbon materials. Ordered porous materials hav...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/30C01B31/02
Inventor 刘晓英杨海峰田博之屠波赵东元
Owner FUDAN UNIV
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