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Preparation method and application of porous carbon material

A porous carbon material and reaction technology, applied in separation methods, chemical instruments and methods, and other chemical processes, can solve the problems of secondary pollution, weak binding force, etc., and achieve enhanced adsorption capacity, optimized pore size and pore volume, Effects that enhance separation selectivity and binding capacity

Active Publication Date: 2018-09-04
江西金海新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the current commercial porous carbon materials such as activated carbon and molecular sieve use wood or coal as raw materials, and are obtained through deashing, pre-oxidation or catalyst activation. The binding force with formaldehyde is weak, which can easily lead to desorption and secondary pollution

Method used

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  • Preparation method and application of porous carbon material
  • Preparation method and application of porous carbon material
  • Preparation method and application of porous carbon material

Examples

Experimental program
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Effect test

Embodiment 1

[0025] Get 15ml volume ratio and be the mixed solvent of ethanol / water of 2:1, add the humic acid 1.0g in lignite wherein, then add melamine 0.6g, after stirring and mixing, dropwise add PluronicP123 surfactant 0.5g wherein, The reaction was stirred for 0.5h to obtain a black mixture. The black mixture was dried in a vacuum oven at 80° C. for 12 hours. After the solvent was removed, a black solid was obtained.

[0026] 2.1 g of black solid was placed in 25 ml of KOH solution with a pH of 6M, and then the whole solution was placed in a vacuum oven and heated at 80° C. for 2 h to obtain a solid. Put the solid into a clean porcelain boat, in N 2 Under protection, activate at 200°C for 2 hours and at 550°C for 2 hours. After the activation is completed, add hydrochloric acid with a concentration of 3M to the solid until no gas is generated, then carry out vacuum filtration, and wash the filter residue with ion water for 3 times. And after drying, the nitrogen-doped porous carbon...

Embodiment 2

[0029] Get 15ml volume ratio and be the mixed solvent of ethanol / water of 2:1, add the humic acid 1.0g in lignite wherein, then add melamine 0.6g, after stirring and mixing, dropwise add PluronicP123 surfactant 1.0g wherein, The reaction was stirred for 0.5h to obtain a black mixture. The black mixture was dried in a vacuum oven at 80° C. for 12 hours. After the solvent was removed, a black solid was obtained.

[0030] 2.6 g of black solid was placed in 25 ml of pH 6M KOH solution, and then the whole solution was placed in a vacuum oven, and heated at 80° C. for 2 h to obtain a solid. Put the solid into a clean porcelain boat, in N 2 Under protection, activate at 200°C for 2 hours and at 550°C for 2 hours. After the activation is completed, add hydrochloric acid with a concentration of 3M to the solid until no gas is generated, then carry out vacuum filtration, and wash the filter residue with ion water for 3 times. And after drying, the nitrogen-doped porous carbon material...

Embodiment 3

[0033] Get 15ml volume ratio and be the mixed solvent of the ethanol / water of 2:1, add the humic acid 1.0g in lignite wherein, then add melamine 0.6g, after stirring and mixing, dropwise add PluronicP123 surfactant 1.5g wherein, The reaction was stirred for 0.5h to obtain a black mixture. The black mixture was dried in a vacuum oven at 80° C. for 12 hours. After the solvent was removed, a black solid was obtained.

[0034] 3.1 g of the black solid was placed in 25 ml of a pH 6M KOH solution, and then the whole solution was placed in a vacuum oven, and heated at 80° C. for 2 h to obtain a solid. Put the solid into a clean porcelain boat, in N 2 Under protection, activate at 200°C for 2 hours and at 550°C for 2 hours. After the activation is completed, add hydrochloric acid with a concentration of 3M to the solid until no gas is generated, then carry out vacuum filtration, and wash the filter residue with ion water for 3 times. And after drying, the nitrogen-doped porous carbo...

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Abstract

The invention discloses a preparation method of a porous carbon material. The preparation method comprises the following steps: firstly, adding humic acid into a mixed solvent of ethanol and water; then adding a nitrogen source, uniformly stirring, and dropwise adding a PluronicP123 surfactant for reacting to obtain a black mixture; secondly, putting the black mixture into a vacuum drying oven fordrying to obtain a black solid; putting the black mixture into a strong alkaline solution for uniformly mixing; then putting a mixture into the vacuum drying oven for reacting and obtaining a solid after the reaction is finished; thirdly, calcining and activating the solid in an inert atmosphere to obtain an activated solid; washing the activated solid with hydrochloric acid until no gas is produced; then carrying out vacuum suction filtration to obtain the porous carbon material. According to the preparation method of the porous carbon material, the humic acid in lignite is adopted as a rawmaterial, and nitrogen is doped into a porous carbon skeleton by utilizing the interaction of an organic nitrogen source and humic acid, so that separation selectivity and binding ability of the porous carbon material to small molecules such as pollutant molecules are enhanced.

Description

technical field [0001] The invention belongs to the technical field of functional materials, and in particular relates to a preparation method and application of a porous carbon material. Background technique [0002] Sulfur dioxide and formaldehyde are one of the main harmful components produced during industrial production, and are also one of the main pollutants in the atmosphere. Sulfur dioxide (SO 2 ) and formaldehyde can cause irritation to human throat, eyes and other diaphragms. Long-term, low-concentration exposure to sulfur dioxide can also cause symptoms such as headache, dizziness, fatigue, asthma, dyspnea, sensory disturbance, and decreased immunity, as well as sequelae such as drowsiness, memory loss, neurasthenia, and mental depression. Sulfur dioxide is also produced in large quantities from industrial emissions, volcanic eruptions, and many other processes. When sulfur dioxide dissolves in water, sulfurous acid is formed. If it is further oxidized, it wil...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/30B01D53/02
CPCB01D53/02B01D2257/302B01D2257/7022B01J20/20
Inventor 喻桂朋罗临风潘春跃
Owner 江西金海新能源科技有限公司
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