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Nitrogen-doped bagasse activated carbon and preparation method thereof

A sugarcane bagasse and activated carbon technology, applied in separation methods, chemical instruments and methods, other chemical processes, etc., can solve the problems of complex preparation process, and achieve the effects of simple preparation method, prevention of mass loss, and small pore size

Active Publication Date: 2018-08-24
WUHAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Targeted surface modification methods are adopted for activated carbon to change its surface chemical characteristics or introduce specific functional groups to enhance the adsorption performance of activated carbon, but most of them are activated carbon prepared by template or synthesis method, and the preparation process is complicated. CO at normal temperature and pressure 2 The adsorption value can only reach 4mmol / g

Method used

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  • Nitrogen-doped bagasse activated carbon and preparation method thereof
  • Nitrogen-doped bagasse activated carbon and preparation method thereof
  • Nitrogen-doped bagasse activated carbon and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0023] The bagasse is fully pulverized, sieved to 2-6mm, washed with deionized water for 3-5 times, and dried in a blast drying oven at 80-105°C to obtain the bagasse, which is set aside. The dried bagasse is mixed with urea accounting for 15% by weight of the bagasse, and an appropriate amount of deionized water is added, soaked for 12 hours, and dried. The above mixture was carbonized in a tube furnace at 600°C under a nitrogen atmosphere for 0.5h, taken out after cooling, rinsed repeatedly with deionized water for 6-10 times, and dried at 105°C to obtain a carbonized precursor.

[0024] The carbonization precursor and KOH were sampled at a mass ratio of 1:2. Dissolve KOH in an appropriate amount of deionized water, stir well and add the carbonized sample. After soaking for 12 hours, dry it in an oven at 95-110°C and transfer it to a tube Activate in a furnace at 600°C for 1 hour under a nitrogen atmosphere. After the sample is cooled to room temperature, it is washed with 1...

Embodiment 2

[0027] The bagasse is fully pulverized, sieved to 2-6mm, washed with deionized water for 3-5 times, and dried in a blast drying oven at 80-105°C to obtain the bagasse, which is set aside. The dried bagasse is mixed with urea accounting for 20 wt% of the bagasse, and an appropriate amount of deionized water is added, soaked for 8 hours, and dried. The above mixture was carbonized in a tube furnace at 600 °C under a nitrogen atmosphere for 1 h, taken out after cooling, rinsed repeatedly with deionized water for 6 to 10 times, and dried at 105 °C to obtain a carbonized precursor.

[0028]The carbonization precursor and KOH were sampled according to the mass ratio of 1:2, KOH was dissolved in an appropriate amount of deionized water, and the carbonized sample was added after fully stirring. Activate in a nitrogen atmosphere at 600°C for 1 hour in a nitrogen atmosphere. After the sample is cooled to room temperature, wash it with 1mol / L HCl for 2 to 3 times, then wash it repeatedly...

Embodiment 3

[0031] The bagasse is fully pulverized, sieved to 2-6mm, washed with deionized water for 3-5 times, and dried in a blast drying oven at 80-105°C to obtain the bagasse, which is set aside. The dried bagasse is mixed with urea accounting for 15% by weight of the bagasse, and an appropriate amount of deionized water is added, soaked for 10 hours, and dried. The above mixture was carbonized in a tube furnace at 500°C under a nitrogen atmosphere for 0.5h, taken out after cooling, rinsed repeatedly with deionized water for 6-10 times, and dried at 105°C to obtain a carbonized precursor.

[0032] The carbonization precursor and KOH were sampled according to the mass ratio of 1:3, KOH was dissolved in an appropriate amount of deionized water, and the carbonized sample was added after fully stirring. Activate in a furnace at 600°C for 1 hour under a nitrogen atmosphere. After the sample is cooled to room temperature, it is washed with 1mol / L HCl for 2 to 3 times, then repeatedly washed...

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Abstract

The invention discloses nitrogen-doped bagasse activated carbon and a preparation method thereof. The preparation method comprises the steps of doping nitrogen into urea under the condition of takingwaste bagasse of the sugar industry as a raw material, dipping and drying, then putting the mixture into a tube furnace for carbonizing, and activating the carbonized sample by using an activating agent to obtain the nitrogen-doped bagasse activated carbon. The activated carbon provided by the invention has the advantages of being simple in preparation method, having high specific surface area andpore volume, being developed in micropores, being high in CO2 absorption performance and good in reproducibility, and the like.

Description

technical field [0001] The invention relates to the field of activated carbon materials, and relates to a nitrogen-doped bagasse activated carbon prepared from bagasse as a raw material, and also relates to a preparation method of nitrogen-doped bagasse activated carbon. Background technique [0002] With the continuous acceleration of global industrialization, in order to meet the needs of industrial production, fossil fuels, especially oil and coal, are used in large quantities, and the carbon dioxide gas produced by their combustion is also increasing day by day. According to data, in recent years, the concentration of carbon dioxide in the atmosphere has risen from 288ppm before the industry to 400ppm in 2014, and it is still growing at a rate of 0.5% per year. According to the estimated data released by the Intergovernmental Panel on Climate Change, by 2035, the concentration of carbon dioxide in the global atmosphere will reach 550ppm. The emission of a large amount o...

Claims

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Application Information

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IPC IPC(8): C01B32/348B01J20/20B01J20/30B01D53/02
CPCB01D53/02B01D2257/504B01J20/20C01B32/348Y02C20/40Y02P20/151
Inventor 韩军张莉詹宜秋梁岩
Owner WUHAN UNIV OF SCI & TECH
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