Heteroatom-doped carbon microsphere and preparation method thereof

A technology of carbon microspheres and heteroatoms, applied in the field of heteroatom-doped carbon microspheres and its preparation, can solve the problems of complex preparation process and difficulty in preparing heteroatom-doped carbon materials

Active Publication Date: 2016-02-17
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the addition of a large amount of strong base KOH requires the use of a large amount of acid for neutralization and washing during post-treatment, which makes the preparation process complicated
It can be seen that it is

Method used

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  • Heteroatom-doped carbon microsphere and preparation method thereof
  • Heteroatom-doped carbon microsphere and preparation method thereof
  • Heteroatom-doped carbon microsphere and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] Step 1) Preparation of styrene-acrylic-polypyrrole core-shell emulsion: take a certain amount of styrene-acrylic emulsion (BC-991, Beijing Dongfang Yakeli Chemical Technology Co., Ltd.), and add it to a reaction vessel equipped with a mechanical stirring device, and then Add the pyrrole monomer whose quality is 10% of styrene-acrylic resin and start to swell the styrene-acrylic latex particles. After swelling for 1 hour, add polyvinylpyrrolidone (K30, molecular weight is about 10,000, Xilong Chemical Co., Ltd.), p-toluenesulfonic acid and ferric chloride hexahydrate (III) aqueous solution, after the system is placed in an ice-water cooling bath for cooling, 30% hydrogen peroxide aqueous solution is added to start the reaction, the solid content of the system is 5%, and in the final system, polyvinylpyrrolidone, The concentrations of p-toluenesulfonic acid, iron(III) chloride hexahydrate and hydrogen peroxide were 60mM, 40mM, 0.1mM and 120mM respectively, and the reaction...

Embodiment 2

[0062] Step 1) The preparation of the styrene-acrylic-polypyrrole core-shell emulsion is the same as in Example 1.

[0063] Step 2) The drying of the styrene-acrylic-polypyrrole emulsion is also the same as in Example 1.

[0064] Step 3) The high-temperature carbonization of the product is carried out under nitrogen atmosphere, and the carbonization temperature is 700°C. The data of the BET specific surface area, pore diameter, pore volume and nitrogen content of the product are shown in Table 1.

Embodiment 3

[0066] Step 1) The preparation of the styrene-acrylic-polypyrrole core-shell emulsion is the same as in Example 1.

[0067] Step 2) The drying of the styrene-acrylic-polypyrrole emulsion is also the same as in Example 1.

[0068] Step 3) The high-temperature carbonization of the product is carried out under nitrogen atmosphere, and the carbonization temperature is 600°C. The data of the BET specific surface area, pore diameter, pore volume and nitrogen content of the product are shown in Table 1.

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Abstract

The invention relates to a heteroatom-doped carbon microsphere. The carbon microsphere is composed of a carbon nanoparticle with a hierarchical pore structure. The carbon nanoparticle has micropores with pore sizes of 2 nm, mesopores with pore sizes of 2 to 50 nm and large pores with pore sizes of more than 50 nm; the BET specific surface area of the carbon nanoparticle is 300 to 1000 m2/g; the content of heteroatoms in the carbon nanoparticle is 2 to 25 wt%; and the heteroatoms are at least one selected from the group consisting of nitrogen, phosphorus, sulfur and boron. The invention also discloses a preparation method for the carbon microsphere.

Description

technical field [0001] The invention belongs to the field of carbon material preparation, and furthermore relates to a heteroatom-doped carbon microsphere with a hierarchical porous structure composed of carbon nanoparticles with a hierarchical porous structure and a preparation method thereof. Background technique [0002] Porous carbon materials usually have excellent properties such as large specific surface area, good thermal and chemical stability, low electrical resistance, and good surface hydrophobicity. They are used in toxic gas adsorption, wastewater treatment, lithium-ion batteries, super capacitors, CO 2 Capture, catalyst and catalyst carrier have good application prospects. Recently, researchers have found that the electronic structure, crystal structure, and hydrophilicity of carbon materials can be changed by heteroatom doping. The specific capacitance of chemically doped carbon materials is generally increased compared to undoped carbon materials. In recen...

Claims

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Application Information

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IPC IPC(8): C01B31/02
Inventor 乔金樑张江茹张晓红戚桂村宋志海蔡传伦赖金梅李秉海王亚王湘高建明张红彬蒋海斌茹越何谷
Owner CHINA PETROLEUM & CHEM CORP
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