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Nanoporous carbon sphere, and preparation method and application thereof

A nanoporous carbon and nanotechnology, applied in the field of porous carbon materials, can solve the problem that porous carbon spheres cannot adapt to different requirements

Pending Publication Date: 2019-10-29
INST OF CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the carbon sources of the hydrothermal method are generally small molecular sugars and natural polymers, and the prepared porous carbon spheres cannot meet the different requirements of many fields.

Method used

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  • Nanoporous carbon sphere, and preparation method and application thereof
  • Nanoporous carbon sphere, and preparation method and application thereof
  • Nanoporous carbon sphere, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0069] Dissolve 1g of chlorinated polypropylene (mass content of chlorine element is 70wt%, Cl / C molar ratio is 0.92:1) in 100ml of tetrahydrofuran, stir well and heat to 60°C, use nitrogen as protective gas to condense and reflux, fully dissolve 2 Hour; 1000ml of acetone is placed in the beaker and stirred rapidly, and the tetrahydrofuran solution that has dissolved the chlorinated polypropylene is injected rapidly into the rapidly stirred acetone with a disposable injection needle; when all the solutions are fully injected, chlorinated polypropylene nanospheres are obtained; Take 100ml of the above-mentioned solution containing chlorinated polypropylene nanospheres, add 100ml of distilled water, pour it into a rotary evaporator for distillation under reduced pressure, and completely spin off tetrahydrofuran and acetone; pour the remaining solution into a 50ml high-pressure reaction kettle, 10°C per minute to 350°C, react for 8 hours to obtain a liquid containing black precipi...

Embodiment 2

[0073] Dissolve 1g of chlorinated polypropylene (mass content of chlorine element is 70wt%, Cl / C molar ratio is 0.92:1) in 100ml of dimethyl sulfoxide, stir well and heat to 120°C, use nitrogen as protective gas to condense and reflux , fully dissolved for 2 hours; 1000ml of acetone was placed in a beaker and stirred quickly, and the dimethyl sulfoxide solution dissolved in chlorinated polypropylene was quickly injected into the rapidly stirred acetone with a disposable injection needle; after all the solutions were injected, the preparation Obtain chlorinated polypropylene nanospheres; get the above-mentioned solution 100ml containing chlorinated polypropylene nanospheres, pour it into a rotary evaporator for distillation under reduced pressure, pour the remaining solution into a 50ml high-pressure reactor, and heat up to 10°C per minute. React at 350°C for 8 hours to obtain a liquid containing black precipitate, then remove the supernatant, wash with ethanol solution, and dry...

Embodiment 3

[0076] Dissolve 1g of chlorinated polyethylene (the mass content of chlorine element is 60wt%, and the Cl / C molar ratio is 0.68:1) in 100ml of xylene, stir well and heat to 120°C, use nitrogen as protective gas to condense and reflux, fully dissolve 2 hours; put 1000ml of methanol in a beaker and stir quickly, and quickly inject the xylene solution dissolved in chlorinated polyethylene into the rapidly stirred distilled water with a disposable injection needle; after all the solutions are injected, the chlorinated polyethylene nano balls; take 100ml of the above solution containing chlorinated polyethylene nanospheres, pour it into a rotary evaporator for distillation under reduced pressure, pour the remaining solution into a 50ml high-pressure reactor, heat up to 350°C at 20°C per minute, and react for 6 hours , to obtain a liquid containing black precipitate, then remove the supernatant, wash with ethanol solution, and dry to obtain a black powder; put the black powder into t...

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Abstract

The invention belongs to the technical field of porous carbon materials, and discloses a nanoporous carbon sphere, and a preparation method and an application thereof. The nanoporous carbon sphere hasan average particle diameter of 20 to 800 nm, a specific surface area of 50 to 5000 m<2> / g, a pore volume of 0.2 to 2.0 cm<3> / g and a graphitization degree ID / IG of 0.5 to 1. 8. With the method provided by the invention, a polymer nanosphere is prepared by using a halogenated polyolefin polymer as a raw material through a precipitation method; the polymer nanoparticle is hydrothermally carbonizedat a low temperature; and a hydrothermally carbonized polymer nanoparticle is then placed into an inert gas atmosphere for further carbonization. The nanoporous carbon sphere prepared by using the method provided by the invention has good sphericity and microporous-mesoporous structure; and the method provided by the invention has the advantages of simple process, convenient operation, low requirements on equipment, capability of realizing large-scale preparation, and application prospect in industrial production.

Description

technical field [0001] The invention belongs to the technical field of porous carbon materials, and in particular relates to a nanoporous carbon sphere and a preparation method and application thereof. Background technique [0002] Porous carbon materials are widely used in catalyst supports, catalysts, supercapacitors, lithium-ion batteries, solar cells and other fields due to their high specific surface area, high porosity, good electrical and thermal conductivity, and adjustable pore size and surface properties. Porous graphitized carbon is a kind of porous carbon material. It uses silica gel as a template to calcine the adsorbed polymer at high temperature for many times to form spherical carbon particles with rich mesoporous surfaces on the surface. Porous carbon spheres were originally used as stationary phases in liquid chromatography, and later they were also used in fields such as energy storage, adsorbents, and drug carriers. [0003] There are many preparation me...

Claims

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Application Information

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IPC IPC(8): C01B32/05B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00C01B32/05
Inventor 李化毅韦华璋李倩胡友良
Owner INST OF CHEM CHINESE ACAD OF SCI
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