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Preparation method and application of porous active carbon material with radix puerariae-based interconnected hierarchical aperture structure

A technology based on porous activated carbon and kudzu root, which is applied in the direction of hybrid capacitor electrodes, etc., can solve the problems such as reports of no relevant literature and patents on activated carbon materials, and achieve the effects of easy industrial production, environmental friendliness, and simple process

Inactive Publication Date: 2016-09-21
XIANGTAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] So far, there have been no reports on the use of kudzu root as a carbon source to prepare activated carbon materials and patents

Method used

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  • Preparation method and application of porous active carbon material with radix puerariae-based interconnected hierarchical aperture structure
  • Preparation method and application of porous active carbon material with radix puerariae-based interconnected hierarchical aperture structure
  • Preparation method and application of porous active carbon material with radix puerariae-based interconnected hierarchical aperture structure

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Embodiment 1

[0040] (1) Wash the kudzu root with water, cut it into discs with a thickness of 5mm, and dry it in a constant temperature drying oven at 100°C for 24 hours to obtain the kudzu root slices on a dry basis. Collect the undersieve to obtain kudzu root powder.

[0041] (2) Add distilled water to the kudzu root powder obtained in step (1) and stir for 0.5h to form a mixture with a liquid / solid ratio of 4, and transfer this mixture to a high-pressure hydrothermal reactor whose inner liner is polytetrafluoroethylene , with a volume filling rate of 0.4, after hydrothermal treatment at 180°C for 12 hours, cool to room temperature, wash the hydrothermal product to neutrality, and then dry it to constant weight at 100°C to obtain kudzu root hydrothermal char.

[0042] (3) Put the kudzu root base hydrothermal carbon coke gained in step (2) in a high-temperature furnace, under N 2 Under the atmosphere, the temperature was raised to 500°C at a heating rate of 5°C / min for 2 hours to obtain ...

Embodiment 2

[0047] (1) Wash Pueraria root with clear water, cut into discs with a thickness of 1mm, and dry in a constant temperature drying oven at 100°C for 24 hours to obtain dry base Puerariae slices, then pulverize dry base Puerariae slices, pass through a 50-mesh sieve, Collect the undersieve to obtain kudzu root powder.

[0048] (2) Add distilled water to the kudzu root powder obtained in step (1) and stir for 0.5h to form a mixture with a liquid / solid ratio of 5, and transfer this mixture to a high-pressure hydrothermal reactor whose inner liner is polytetrafluoroethylene , with a volume filling rate of 0.6, after hydrothermal treatment at 180°C for 18 hours, cool to room temperature, wash the hydrothermal product to neutrality, and then dry it to constant weight at 100°C to obtain kudzu root hydrothermal char.

[0049] (3) Sodium carbonate is made into a solution with a concentration of 3 mol / L, and then the mass ratio of the kudzu root hydrothermal charcoal and sodium carbonate ...

Embodiment 3

[0056] (1) Wash Pueraria root with clean water, cut into discs with a thickness of 2mm, and dry in a constant temperature drying oven at 100°C for 24 hours to obtain dry basis Puerariae slices, then pulverize dry base Pueraria slices, pass through 100-mesh sieve, Collect the undersieve to obtain kudzu root powder.

[0057] (2) add distilled water and stir 1h in the kudzu root powder that step (1) obtains, be made into the mixture that liquid / solid ratio is 5, and this mixture is transferred to the high-pressure hydrothermal reactor that liner is polytetrafluoroethylene, The volume filling ratio was 0.6, after hydrothermal treatment at 180°C for 12 hours, it was cooled to room temperature, the hydrothermal product was washed to neutrality, and then dried to constant weight at 100°C to obtain kudzu root hydrothermal char.

[0058] (3) Zinc chloride is made into a solution with a concentration of 2mol / L, and then the kudzu root hydrothermal charcoal prepared in step (2) is added ...

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Abstract

The invention discloses a preparation method and application of a porous active carbon material with a radix puerariae-based interconnected hierarchical aperture structure. The method comprises the following steps: carrying out clean washing, slicing, drying and other pretreatment on radix puerariae, and then adopting hydrothermal, carbonization and activation treatment processes to prepare the porous active carbon material with the radix puerariae-based interconnected hierarchical aperture structure. The obtained material having the interconnected hierarchical aperture structure, and has the micropore volume of 0.2-0.8 m<3> / g, the mesopore volume of 0.02-0.6 m<3> / g, the total pore volume of 0.3-1.3 m<3> / g and the total specific surface area of 500-3000 m<2> / g. The prepared material relates to the electrochemical energy storage, adsorption separation, catalyst carrier, drug carrier and other fields, and particularly is suitable for application in super capacitors. The green biomass is adopted as a carbon source and is wide in source and low in price, and the preparation method has the advantages of simple process, easily controlled process and environmental friendliness, and is suitable for large-scale production.

Description

technical field [0001] The invention provides a preparation method of a new type of carbon material, specifically a porous activated carbon material with interconnected hierarchical pore structure of kudzu roots, and relates to the application fields of electrochemical energy storage, adsorption separation, catalyst carrier, drug carrier and the like. Background technique [0002] Carbon-based materials are widely used in energy, Many national economic fields such as chemical industry, environmental protection, electronics and aerospace. The study of carbon-based materials with different morphologies and structures has become a worldwide research hotspot. [0003] Natural green biomass raw materials have the characteristics of wide sources, environmental friendliness, unique morphology and carbonaceous structure. In recent years, the research on the preparation of carbon-based materials from biomass raw materials has received extensive attention. [0004] Literature [Bior...

Claims

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Application Information

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IPC IPC(8): C01B31/10H01G11/34
CPCY02E60/13H01G11/34C01P2004/03
Inventor 刘恩辉蒋海霞王洛杨锃
Owner XIANGTAN UNIV
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