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Preparation method of mesoporous hollow carbon microspheres with internal communication structure

A technology of hollow carbon and interconnection, applied in the preparation/purification of carbon, hybrid capacitor electrodes, etc., can solve the problems of limited solubilization, affecting the kinetics of polymer polymerization, high film strength, etc., and achieve low Kraft Features, effects of low cmc value and high surface activity

Pending Publication Date: 2019-12-27
YANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

And the tensio-active agent of this single head single tail, its film intensity of the micelle that forms is higher, and the solubilization amount of reactant such as 3-aminophenol is limited in micelle solubilization barrier layer, thus affects the high-molecular polymer Polymerization Kinetics

Method used

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  • Preparation method of mesoporous hollow carbon microspheres with internal communication structure
  • Preparation method of mesoporous hollow carbon microspheres with internal communication structure
  • Preparation method of mesoporous hollow carbon microspheres with internal communication structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] In this example, 1 mass part of 3-aminophenol and 1 mass part of pentane-1,5-bis(dimethylhexadecyl ammonium bromide) were added as cationic Gemini surfactants to 91.7 mass Parts of water and 30 parts by mass of ethanol, the mixture was magnetically stirred in a water bath at 30 °C until it was completely dissolved, then 1 part by mass of concentrated ammonia water (25 wt%) solution was added to the system, and the stirring was continued for ten minutes Add 0.56 parts by mass of formaldehyde, and when the reaction continues until milky white turbidity is formed, add 4.65 parts by mass of tetraethyl orthosilicate, and continue to react in a water bath at 30°C for 24 hours; transfer the reactants after stirring to the reaction kettle , and then the anti-pot was placed in a 100 ° C constant temperature oven for hydrothermal reaction for 24 h. After natural cooling, the product in the reaction kettle was taken out, and washed with distilled water and absolute ethanol in sequ...

Embodiment 2

[0019] In this example, 1 mass part of 3-aminophenol and 0.5 mass part of pentane-1,5-bis(dimethylhexadecyl ammonium bromide) were added to 82 mass parts as cationic Gemini surfactant Parts of water and 20 parts by mass of ethanol, the mixture was magnetically stirred in a water bath at 25 °C until it was completely dissolved, then 0.32 parts by mass of concentrated ammonia water (28 wt%) solution was added to the system, and the stirring was continued for ten minutes Add 0.26 parts by mass of formaldehyde, and when the reaction continues until milky white turbidity is formed, add 2.32 parts by mass of tetraethyl orthosilicate, and continue to react in a water bath at 30°C for 24 hours; transfer the reactants after stirring to the reaction kettle , and then the anti-pot was placed in a 100 ° C constant temperature oven for hydrothermal reaction for 24 h. After natural cooling, the product in the reaction kettle was taken out, and washed with distilled water and absolute ethano...

Embodiment 3

[0021] In this example, 1 mass part of 3-aminophenol and 1.3 mass parts of pentane-1,5-bis(dimethylhexadecyl ammonium bromide) were added to 122 mass parts as cationic Gemini surfactant Parts of water and 13.18 parts by mass of ethanol, the mixture was magnetically stirred in a water bath at 20°C until it was completely dissolved, then 1.98 parts by mass of concentrated ammonia water (25 wt%) solution was added to the system, and the stirring was continued for ten minutes Add 1.06 parts by mass of formaldehyde, and when the reaction continues until milky white turbidity is formed, add 7.6 parts by mass of tetraethyl orthosilicate, and continue to react in a water bath at 25°C for 22 hours; transfer the reactants after stirring to the reaction kettle , and then the anti-pot was placed in a 120 ° C constant temperature oven for hydrothermal reaction for 20 h. After natural cooling, the product in the reaction kettle was taken out, and washed with distilled water and absolute eth...

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Abstract

The invention relates to a preparation method of mesoporous hollow carbon microspheres with an internal communication structure in the technical field of porous carbon nanomaterials, which sequentially comprises the following steps: adding 3-aminophenol and a gemini cationic Gemini surfactant into a mixed solution of water and ethanol, and magnetically stirring and dissolving the mixed solution ina water bath at 20-30 DEG C; adding concentrated ammonia water into the dissolved mixed solution, uniformly mixing the concentrated ammonia water and the dissolved mixed solution, adding formaldehyde, adding tetraethyl orthosilicate when milk white turbid substances exist, and continuing to react for 20-24 hours in a water bath of 20-30 DEG C; transferring the reactant into a reaction kettle, carrying out a constant-temperature hydrothermal reaction at 90-120 DEG C for 20-24 hours, naturally cooling, sequentially washing the cooled reactant with distilled water and absolute ethyl alcohol, andcarrying out freeze drying for 36 hours to obtain a powdery product; and 4, calcining the powdery product obtained in the previous step in a nitrogen atmosphere, and etching, washing and drying the calcined black solid to obtain the mesoporous hollow carbon microsphere with the internal communication structure.

Description

technical field [0001] The invention relates to the technical field of porous carbon nanomaterials, in particular to a method for preparing mesoporous hollow carbon microspheres with interconnected structures. Background technique [0002] Porous carbon materials have many excellent properties such as light weight, high toughness, high modulus, high temperature resistance, acid and alkali resistance, non-toxicity, good adsorption force, and easy processing. , high mechanical stability, good electrical conductivity, surface chemical inertness, large specific surface area and pore volume, good electrical conductivity, and low economic cost have attracted extensive attention from researchers. In the past few decades, a large number of mesoporous carbon materials, such as carbon nanosheets, carbon nanospheres, and carbon nanotubes, have been synthesized and reported. Among them, mesoporous carbon hollow spheres have attracted a lot of attention from researchers because of their...

Claims

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Application Information

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IPC IPC(8): C01B32/05H01G11/24H01G11/30H01G11/36
CPCC01B32/05H01G11/24H01G11/30H01G11/36Y02E60/13
Inventor 沈明李维政高强李冰玉
Owner YANGZHOU UNIV
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