Preparation method of honeycomb shaped porous carbon spheres

A honeycomb, porous carbon technology, applied in chemical instruments and methods, carbon compounds, inorganic chemistry, etc., to achieve the effects of low cost, simple preparation and high specific surface area

Inactive Publication Date: 2018-07-13
UNIV OF SHANGHAI FOR SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the literature reports that the ultrasonic atomization method is mainly used to prepare porous carbon spheres by adjusting the heat treatment temperature of the carbon precursor and additives, but the preparation of honeycomb porous carbon spheres by this method has not been reported.

Method used

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  • Preparation method of honeycomb shaped porous carbon spheres
  • Preparation method of honeycomb shaped porous carbon spheres
  • Preparation method of honeycomb shaped porous carbon spheres

Examples

Experimental program
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Effect test

Embodiment 1

[0019] Take 100ml of 20g / l glucose solution and 2g of potassium hydroxide, mix them evenly, and then spray and dry them at 500°C. The collection device can collect the powder particles with a spherical structure. The collected powder particles were heat-treated at 800°C for 1 hour in an inert gas atmosphere, and then washed to obtain honeycomb porous carbon spheres with a specific surface area of ​​1068m 2 / g. The appearance of honeycomb porous carbon spheres is as follows: figure 1 shown.

Embodiment 2

[0021] Take 100ml of 50g / l sucrose solution and 15g of sodium hydroxide, mix them evenly, and then spray and dry them at 600°C. The collection device can collect the powder particles with spherical structure. The collected powder particles were heat-treated at 900°C for 2 hours in an inert gas atmosphere, and then cleaned to obtain honeycomb porous carbon spheres with a specific surface area of ​​1652m 2 / g. The appearance of honeycomb porous carbon spheres is as follows: figure 2 shown.

Embodiment 3

[0023] Take 100ml of 100g / l fructose solution and 50g of potassium carbonate, mix them evenly, and then spray and dry them at 300°C. The collection device can collect the powder particles with a spherical structure. The collected powder particles were heat-treated at 600° C. for 1 hour under an inert gas atmosphere, and then washed to obtain honeycomb porous carbon spheres. The appearance of honeycomb porous carbon spheres is as follows: image 3 shown.

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Abstract

The invention provides a preparation method of honeycomb shaped porous carbon spheres. The method comprises the following steps: uniformly mixing a water-soluble carbon source and a pore-forming agentto obtain a mixed solution; performing atomization drying on the mixed solution to evaporate a solvent of the mixed solution so as to obtain solid powder particles; thermally processing the collectedsolid powder particles in an inert gas atmosphere; and finally, washing the obtained powder sample to obtain the honeycomb shaped porous carbon spheres. The material prepared according to the methodis high in specific surface area which is up to 2000 m<2>/g; in addition, the material is provided with the honeycomb shaped pores and a sheet-shaped structure; the porous carbon spheres are preparedby ultrasonic atomizing; the preparation method is simple; the cost is relatively low; and mass production can be carried out.

Description

technical field [0001] The invention belongs to the field of chemical industry and relates to a porous carbon sphere, in particular to a preparation method of a honeycomb porous carbon sphere. Background technique [0002] Porous carbon spheres have high specific surface area, special pore structure, excellent chemical stability and high temperature resistance, as well as excellent mechanical properties, low density and electrical conductivity, and are widely used in adsorption, electrochemistry, catalysis and energy storage, etc. field has a wide range of applications. [0003] Ultrasonic atomization is a simple and effective method for preparing porous carbon spheres, and it can be used for large-scale industrial production. Therefore, the use of ultrasonic atomization to prepare porous carbon spheres with controllable structure has important application value. At present, it is reported in the literature that the ultrasonic atomization method is mainly used to prepare ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/348
Inventor 唐志红江颂杨俊和
Owner UNIV OF SHANGHAI FOR SCI & TECH
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