Preparation method of camellia seed shell based carbon microspheres with high specific surface area

A technology with high specific surface area and camellia seed husks is applied in the field of carbon material preparation, which can solve the problems of inability to realize mass production and green preparation, strict equipment and operation requirements, and complicated raw material source process, etc., and achieves low cost, regular appearance, Good thermal stability

Active Publication Date: 2016-08-24
NANCHANG HANGKONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] It can be seen from the above that the current methods for synthesizing activated carbon microspheres have disadvantages such as complex raw material source process, high cost, high cost of preparation process, complicated equipment, poor morphology and limited specific surface area of ​​the prepared carbon microspheres, and the preparation process There are strict requirements on equipment and operation, and the introduction of organic solvents, metal-organic catalysts, etc., cannot achieve mass production and green preparation

Method used

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  • Preparation method of camellia seed shell based carbon microspheres with high specific surface area
  • Preparation method of camellia seed shell based carbon microspheres with high specific surface area
  • Preparation method of camellia seed shell based carbon microspheres with high specific surface area

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Embodiment 1

[0026] Put 1.6g of Camellia oleifera seed shell powder with a particle size of 74 μm and 0.4g of phloroglucinol in a 250ml beaker, add 60mL of deionized water, and stir magnetically for 6h. Transfer to a 100mL polytetrafluoroethylene-lined reactor, and react in a blast oven at 230°C for 12h. After naturally cooling to room temperature, the solids were separated by vacuum filtration, washed alternately with deionized water and absolute ethanol several times, and dried in a blast drying oven at 60°C to obtain hydrothermal carbon microspheres.

[0027] Put 1 g of hydrothermal carbon microspheres in an alumina porcelain boat, anneal in a high-temperature tube furnace, raise the temperature to 650 °C at 5 °C / min, keep the temperature for 2 hours, and then cool down to room temperature naturally to obtain annealed carbon microspheres. The annealing process uses an argon atmosphere for protection.

[0028] Take 0.3g of annealed carbon microspheres and 0.3g of potassium hydroxide sol...

Embodiment 2

[0031] Put 1.6g of Camellia oleifera seed shell powder with a particle size of 74 μm and 0.4g of phloroglucinol in a 250ml beaker, add 60mL of deionized water, and stir magnetically for 6h. Transfer to a 100mL polytetrafluoroethylene-lined reactor, and react in a blast oven at 230°C for 12h. After naturally cooling to room temperature, the solids were separated by vacuum filtration, washed alternately with deionized water and absolute ethanol several times, and dried in a blast drying oven at 60°C to obtain hydrothermal carbon microspheres.

[0032] Put 1 g of hydrothermal carbon microspheres in an alumina porcelain boat, anneal in a high-temperature tube furnace, raise the temperature to 650 °C at 5 °C / min, keep the temperature for 2 hours, and then cool down to room temperature naturally to obtain annealed carbon microspheres. The annealing process uses an argon atmosphere for protection.

[0033] Take 0.3g of annealed carbon microspheres and 0.6g of potassium hydroxide sol...

Embodiment 3

[0036] Put 1.6 g of camellia oleifera seed shell powder with a particle size of 74 μm and 0.4 g of phloroglucinol in a 250 mL beaker, add 60 mL of deionized water, and stir magnetically for 6 h. Transfer to a 100mL polytetrafluoroethylene-lined reactor, and react in a blast oven at 230°C for 12h. After naturally cooling to room temperature, the solids were separated by vacuum filtration, washed alternately with deionized water and absolute ethanol several times, and dried in a blast drying oven at 60°C to obtain hydrothermal carbon microspheres.

[0037]Put 1 g of hydrothermal carbon microspheres in an alumina porcelain boat, anneal in a high-temperature tube furnace, raise the temperature to 650 °C at 5 °C / min, keep the temperature for 2 hours, and then cool down to room temperature naturally to obtain annealed carbon microspheres. The annealing process uses an argon atmosphere for protection.

[0038] Take 0.3g of annealed carbon microspheres and 0.6g of potassium hydroxide...

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Abstract

The invention discloses a preparation method of camellia seed shell based carbon microspheres with a high specific surface area. According to the method, hydrothermal carbon microspheres are prepared from camellia seed shell powder serving as a raw material and phloroglucinol serving as an aid through a hydrothermal reaction, the hydrothermal carbon microspheres are annealed, the annealed carbon microspheres are obtained, alkali metal hydroxide is used for soaking the annealed carbon microspheres, the soaked carbon microspheres are washed and dried after being activated at high temperature, and the activated carbon microspheres with the high specific surface area are obtained. The prepared activated carbon microspheres have good stability, large specific surface area, uniform particle sizes, smooth surfaces and regular shapes; raw materials of the carbon microspheres are biomass waste camellia seed shells, the source is wide, the cost is low, no organic solvent is used in the preparation process, and the preparation method is more environment-friendly.

Description

technical field [0001] The invention relates to a biomass carbon microsphere and a preparation method thereof, in particular to a preparation method of a high specific surface area carbon microsphere, and belongs to the technical field of carbon material preparation. Background technique [0002] Carbon microspheres are a new type of carbon material with superior structure. It has a wide range of particle size distribution, smooth surface and regular shape. It has high mechanical strength, low density, good thermal stability and unique electrochemical properties. Therefore, it is used in many fields such as lithium-ion batteries, drug delivery, catalyst carriers, chromatographic column packing, lubricants, enzymes and protein protection. It is a carbon material with great development potential and application prospects, which has attracted great attention. research interests. At present, according to the temperature difference in the preparation of carbon microspheres, it c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/12
CPCC01P2004/03C01P2004/61C01P2006/12
Inventor 郭会琴马文天李可心颜流水刘淑芬易绍亭
Owner NANCHANG HANGKONG UNIVERSITY
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