Method for preparing high-specific surface area porous carbon material based on oil tea seed husk and application thereof

A technology of high specific surface area and porous carbon materials, which is applied in the preparation of biomass carbon materials and the field of preparation of biomass porous carbon materials, can solve the problems of waste of resources, environment and pollution, and achieve simple production process, wide sources and good dispersion sexual effect

Active Publication Date: 2016-06-15
NANCHANG HANGKONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The by-product camellia oleifera shell is basically discarded or incinerated, resulting in waste of resources and environmental pollution.

Method used

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  • Method for preparing high-specific surface area porous carbon material based on oil tea seed husk and application thereof
  • Method for preparing high-specific surface area porous carbon material based on oil tea seed husk and application thereof
  • Method for preparing high-specific surface area porous carbon material based on oil tea seed husk and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Example 1: Preparation of High Specific Surface Area Porous Carbon Material

[0023] Add 2.0g of Camellia oleifera seed shell powder (through a 74μm sieve) into 60ml of deionized water, stir and swell on a magnetic stirrer for 6h, then transfer to a 100ml polytetrafluoroethylene-lined reactor, pass through nitrogen to remove oxygen The reaction kettle was placed in a blast drying oven at 230°C for constant temperature reaction for 12 hours. The reactor was naturally cooled to room temperature, the upper liquid was poured out, and the solid was taken out. Sequentially ultrasonically cleaned with deionized water and absolute ethanol until the washing liquid was colorless, the mixture was vacuum filtered, and the obtained solid was dried in a drying oven at 60°C to obtain a black powder substance. Take 0.5g of the above powder and place it in a mortar, add 2g KOH for thorough grinding, then place the mixed sample in a porcelain boat, heat and activate it in a tube furnace...

Embodiment 2

[0024] Example 2: Static adsorption experiment of heavy metal Cr6+ by porous carbon material with high specific surface area

[0025] Accurately pipette 40ml of solutions with initial concentrations of 10mg / L, 30mg / L, 50mg / L, 70mg / L, 90mg / L, 110mg / L, 130mg / L, and 150mg / LCr6+ into eight 100ml Erlenmeyer flasks with stoppers , use 0.1mol / LH2SO4 and 0.1mol / LNaOH to adjust the pH value of the solution to 2, then weigh 10mg of the carbon material powder prepared by the present invention and add them to the conical flask, after mixing, let the conical flask be placed in a constant temperature oscillator at 150r Equilibrate under the condition of 24h / min, take 5mL sample mixture after shaking, centrifuge at 8500r / min for 2min, take an appropriate amount of supernatant and use diphenylcarbazide spectrophotometry to develop color, and then measure the solution at 540nm The absorbance was calculated by drawing a standard curve to calculate the concentration of Cr6+ in the solution. The...

Embodiment 3

[0026] Example 3: Static adsorption experiment of methylene blue by porous carbon material with high specific surface area

[0027] Accurately pipette 20ml of the initial concentrations of 50mg / L, 100mg / L, 150mg / L, 180mg / L, 200mg / L, 220mg / L, 250mg / L, 300mg / LMB solutions into eight 50ml stoppered Erlenmeyer flasks , use 0.1mol / LHCl and 0.1mol / LNaOH to adjust the pH value of the solution to 8, then weigh 10mg of the carbon material powder prepared by the present invention and add them to the conical flask, and after mixing, let the conical flask be placed in a constant temperature shaker at 150r Equilibrate under the condition of 12h / min, take 5mL of sample mixture after shaking, centrifuge at 8500r / min for 2min, take 1mL of supernatant, measure the absorbance of the solution at 665nm by spectrophotometry, and calculate the concentration in the solution by drawing a standard curve MB concentration. The equilibrium adsorption amount qe was plotted against the equilibrium concent...

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Abstract

The invention relates to a method for preparing a high-specific surface area porous carbon material based on oil tea seed husks and an application thereof. The preparation method of the carbon material comprises the following steps: performing hydrothermal carbonization on the oil tea seed husk powder to obtain a black solid, using water and ethanol for cleaning the black solid and drying the black solid, adding KOH and grinding and performing hole expanding, then placing a mixing sample in inert gas flow atmosphere, separately using dilute hydrochloric acid and water for washing an obtained grey solid until the grey solid is neutral, performing pumping filtration, and naturally drying the product in air to obtain the high-specific surface area porous carbon material. The carbon material has excellent adsorption performance on heavy metal, a dye and perfluorinated sulfonic acid pollutants in water. The method has the advantages that the raw material is biomass waste, the source is wide, the cost is low; processes for preparing the carbon material is simple, the used reagents are conventional chemical reagents, the production cost is low; and the adsorptivity of the carbon material on a plurality of pollutants in water is better than that of the reported materials.

Description

technical field [0001] The present invention relates to a preparation method and use of a biomass carbon material, in particular to a method for preparing a biomass porous carbon material based on camellia seed shell-based high specific surface area using hydrothermal carbonization and alkali activation technology and used as an adsorption application of the agent. It belongs to the field of biochemical industry and wastewater treatment. Background technique [0002] Carbon materials are widely used in the fields of metallurgy, chemical industry, machinery, electronics, aviation, and the environment because of their excellent heat resistance, high thermal conductivity, high electrical conductivity, and good chemical inertness. Compared with commonly used fossil resources such as coal-based and asphalt-based raw materials, biomass resources such as agricultural and forestry wastes are rich in carbon elements. As renewable resources, they are cheap and have become the preferr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/30C01B31/08C01B31/10C01B31/12C01B31/02C02F1/28C02F1/62C02F1/58C01B32/336
CPCB01J20/20B01J2220/42B01J2220/4806B01J2220/4825B01J2220/4875C02F1/283C02F2101/308C02F2101/345C02F2101/36C02F2101/40
Inventor 颜流水郭会琴李可心马文天刘宇毕晨阳曾春城舒婷
Owner NANCHANG HANGKONG UNIVERSITY
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