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Catalyst-free preparation method and application of porous helical carbon material

A technology of carbon materials and catalysts, applied in the field of catalyst-free preparation of porous helical carbon materials, can solve the problems of low controllability of experimental parameters, small specific surface area, limited use, etc., and achieve easy-to-obtain raw material sources, high specific surface area, The effect of process safety

Inactive Publication Date: 2021-05-25
ANHUI UNIVERSITY OF TECHNOLOGY AND SCIENCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] This invention is the result of further research on the basis of the patent application number 201811130226.8 and the name "a biomass-based spiral carbon fiber and its preparation method". The purpose of the invention is to solve the existing raw materials for preparing spiral carbon fiber materials Expensive, containing substances harmful to the environment, low controllability of experimental parameters, small specific surface area, small pore volume, and limited use, and a catalyst-free preparation method for porous helical carbon materials with ultra-high specific surface area is proposed and its application

Method used

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  • Catalyst-free preparation method and application of porous helical carbon material
  • Catalyst-free preparation method and application of porous helical carbon material
  • Catalyst-free preparation method and application of porous helical carbon material

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Embodiment 1

[0040] A catalyst-free preparation method and application of a porous helical carbon material proposed by the present invention, comprising the following steps:

[0041] S1, take the fallen leaves and wash them with ultrapure water to remove the dirt on the fallen leaves;

[0042] S2. Soak the washed leaves and fallen leaves in the corrosion solution solution and boil for 120min, rinse the sediment 4 times with ultrapure water; the corrosion solution is composed of calcium hydroxide and sodium hydroxide with a mass ratio of 80:80:80:1200 , sodium sulfite and ultrapure water;

[0043] S3, ultrasonically treat the washed precipitate in a sulfuric acid solution with a volume concentration of 25% for 1 hour, wash it with deionized water and alcohol for 5 times, and collect the aggregates of the threaded catheter;

[0044] S4. Put the agglomerate of the threaded catheter into a vacuum freeze dryer, and freeze-dry at -80°C for 24 hours to obtain the threaded catheter;

[0045] S5,...

Embodiment 2

[0048] A catalyst-free preparation method and application of a porous helical carbon material proposed by the present invention, comprising the following steps:

[0049] S1, take the fallen leaves and wash them with ultrapure water to remove the dirt on the fallen leaves;

[0050] S2, soak the washed leaves and fallen leaves in the corrosion solution solution and boil for 60min, rinse the sediment 4 times with ultrapure water; the corrosion solution is composed of calcium hydroxide and sodium hydroxide with a mass ratio of 80:80:80:1200 , sodium sulfite and ultrapure water;

[0051] S3, ultrasonically treat the washed precipitate in a sulfuric acid solution with a volume concentration of 30% for 1 hour, wash it with deionized water and alcohol for 5 times, and collect the aggregates of the threaded catheter;

[0052] S4. Put the agglomerate of the threaded catheter into a vacuum freeze dryer, and freeze-dry at -80°C for 24 hours to obtain the threaded catheter;

[0053] S5, ...

Embodiment 3

[0056] A catalyst-free preparation method and application of a porous helical carbon material proposed by the present invention, comprising the following steps:

[0057] S1, take the fallen leaves and wash them with ultrapure water to remove the dirt on the fallen leaves;

[0058] S2. Soak the washed leaves and fallen leaves in an aqueous lime solution and boil for 60 minutes, rinse the sediment 3 times with ultrapure water; the corrosion solution is composed of calcium hydroxide, sodium hydroxide, sodium hydroxide, and Sodium sulfite and ultrapure water;

[0059] S3, ultrasonically treat the washed precipitate in a sulfuric acid solution with a volume concentration of 25% for 1 hour, wash with deionized water and alcohol for 3 times, and collect the aggregates of the threaded catheter;

[0060] S4. Put the agglomerate of the threaded catheter into a vacuum freeze dryer, and freeze-dry at -80°C for 24 hours to obtain the threaded catheter;

[0061] S5, get the threaded condu...

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Abstract

The invention provides a catalyst-free preparation method and application of a porous helical carbon material. The catalyst-free preparation method of the porous helical carbon material comprises the following steps: S1, washing fallen leaves with ultra-pure water; S2, soaking the fallen leaves in an etchant solution, boiling, and washing the precipitate with ultra-pure water; S3, conducting ultrasonic treatment in a sulfuric acid solution, cleaning with deionized water and alcohol, and collecting agglomerates of a threaded guide pipe; S4, freeze-drying the agglomerates of the threaded guide pipe to obtain a threaded guide pipe; S5, soaking and oscillating the obtained threaded guide pipe in an activating agent soaking solution for a period of time, and then freeze-drying; and S6, pre-carbonizing in a tubular furnace, heating and activating, cleaning, and drying to obtain the porous helical carbon material. The preparation method provided by the invention is wide in raw material source, simple in preparation process, easy to operate, safe and environment-friendly, and the obtained porous helical carbon material product is high in purity, excellent in performance, high in specific surface area, developed in pore structure and wide in application.

Description

technical field [0001] The invention relates to the technical field of carbon material preparation, in particular to a catalyst-free preparation method and application of a porous helical carbon material. Background technique [0002] Helical carbon materials are widely used in the fields of adsorbents, supercapacitors, microwave absorption, and gas storage due to their high specific surface area, high porosity, good electrical and thermal conductivity, and adjustable pore size and surface properties. At present, the preparation methods of helical carbon materials are usually synthesized by plasma, arc discharge or chemical vapor deposition (CVD). In conventional preparation methods, it is necessary to use organic matter (such as acetylene, methane, etc.) as a carbon source, and to complete the reaction in the presence of a catalyst (such as an iron-based catalyst, a nickel-based catalyst, a composite catalyst, etc.), resulting in the prepared helical carbon The structure a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/324C01B32/348D01F9/16D01D1/02H01G11/26H01G11/34H01G11/86H01Q17/00C09K3/00
CPCC01B32/324C01B32/348D01F9/16D01D1/02H01G11/26H01G11/34H01G11/86H01Q17/00C09K3/00
Inventor 王志俊文亚东陶锋祝淑媛吴智清刘兴龙孙宇峰
Owner ANHUI UNIVERSITY OF TECHNOLOGY AND SCIENCE
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