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Monodisperse porous carbon sphere and preparation method thereof

A porous carbon, monodisperse technology, applied in the field of monodisperse porous carbon spheres and its preparation, can solve the problems of high preparation cost of porous carbon spheres, limited industrial application, complex synthesis process, etc. Short, easy-to-use effects

Active Publication Date: 2018-09-28
广东韦禾新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, its complex synthesis process and long reaction time (usually more than 48 hours) make the preparation cost of porous carbon spheres high, which limits its wide-scale industrial application.

Method used

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  • Monodisperse porous carbon sphere and preparation method thereof
  • Monodisperse porous carbon sphere and preparation method thereof

Examples

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Embodiment 1

[0033] This embodiment provides a kind of monodisperse porous carbon sphere, and its preparation method comprises:

[0034] a. Add absolute ethanol and deionized water into a beaker at a volume ratio of 1:1.96 to form a 80mL mixed solution; weigh 0.3g of triblock copolymer F108 and add it to the mixed solution at a speed of 2000r / min Stir for 20min;

[0035] b. Take 3mL of ammonia water (mass fraction is 25%), 1.2g of phenol and 4.5mL of formaldehyde were added to the solution obtained in step a, and stirred at a speed of 2000r / min for 30min at room temperature to obtain a mixed base solution;

[0036] c. Transfer the mixed base liquid to a 100mL polytetrafluoroethylene reactor, react at 170°C for 6 hours, cool, wash the product with alcohol and water, and dry to obtain phenolic resin balls;

[0037] d. Put the phenolic resin ball in N 2 carbonization at 700°C for 3 hours under the protection of atmosphere, and then in N 2 Cool to room temperature under atmosphere to obtain...

Embodiment 2

[0040] This embodiment provides a kind of monodisperse porous carbon sphere, and its preparation method comprises:

[0041] a. Add absolute ethanol and deionized water to a beaker at a volume ratio of 1:3.5 to form a 80mL mixed solution; weigh 0.5g of triblock copolymer F108 and add it to the mixed solution at a speed of 2000r / min Stir for 20min;

[0042]b. Take 3mL of ammonia water (mass fraction is 25%), 1.2g of phenol and 4.5mL of formaldehyde were added to the solution obtained in step a, and stirred at a speed of 2000r / min for 30min at room temperature to obtain a mixed base solution;

[0043] c. Transfer the mixed base liquid to a 100mL polytetrafluoroethylene reactor, react at 170°C for 6 hours, cool, wash the product with alcohol and water, and dry to obtain phenolic resin balls;

[0044] d. Put the phenolic resin ball in N 2 carbonization at 700°C for 3 hours under the protection of atmosphere, and then in N 2 Cool to room temperature under atmosphere to obtain mon...

Embodiment 3

[0047] This embodiment provides a kind of monodisperse porous carbon sphere, and its preparation method comprises:

[0048] a. Add absolute ethanol and deionized water into a beaker at a volume ratio of 1:2.3 to form a 80mL mixed solution; weigh 0.4g of triblock copolymer F127 and add it to the mixed solution at a speed of 3000r / min Stir for 10 minutes;

[0049] b. Take 3mL of ammonia water (mass fraction is 25%), 1.2g of phenol and 4.5mL of formaldehyde were added to the solution obtained in step a, and stirred at a speed of 2000r / min for 20min at room temperature to obtain a mixed base solution;

[0050] c. Transfer the mixed base liquid to a 100mL polytetrafluoroethylene reactor, react at 150°C for 9 hours, cool, wash the product with alcohol and water, and dry to obtain phenolic resin balls;

[0051] d. Put the phenolic resin ball in N 2 carbonization at 500°C for 4 hours under the protection of atmosphere, and then in N 2 Cool to room temperature under atmosphere to ob...

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Abstract

The invention provides a monodisperse porous carbon sphere and a preparation method of the monodisperse porous carbon sphere, and relates to the field of inorganic carbon materials. The preparation method comprises the following steps: evenly dispersing a template agent, phenol, formaldehyde and an alkali in an alcoholic solution to obtain a mixed base solution; putting the mixed base solution ina closed vessel to have a polymerization reaction to obtain a phenolic resin sphere; carbonizing the phenolic resin sphere in the inert atmosphere. The particle size of the carbon sphere prepared through the method is 200 nm to 2 [mu]m, the range is adjustable, the degree of sphericity is high, the dispersity is high, the porous structure is rich, and the monodisperse porous carbon sphere can be widely applied to various fields such as adsorption, catalysis, separation and purification, energy storage and conversion, and biomedicine.

Description

technical field [0001] The invention relates to the field of inorganic carbon materials, in particular to a monodisperse porous carbon sphere and a preparation method thereof. Background technique [0002] Monodisperse porous carbon spheres have uniform and regular geometric morphology, well-developed and adjustable pores, controllable size distribution, good stability and excellent adsorption performance, and have been widely used in adsorption, catalysis, separation and purification, energy storage and transformation and biomedicine among many other fields. In recent years, the research on the synthesis of carbon spheres has mainly focused on the realization of monodispersity of carbon spheres, orderly distribution of pores, and precise control of particle size. [0003] At present, there are many methods for synthesizing monodisperse porous carbon spheres, including template method, self-assembly method, hydrothermal carbonization method and extension method, etc. Amo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/05
CPCC01B32/05C01P2004/03C01P2004/32C01P2004/61C01P2004/62C01P2006/12
Inventor 夏辉梁忠冠张洛蒙
Owner 广东韦禾新材料科技有限公司
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