Preparation method of nitric acid oxidation modified high-temperature carbonized activated bamboo charcoal

A technology of activated bamboo charcoal and high-temperature carbonization, which is applied in chemical instruments and methods, and other chemical processes, can solve the problems of small specific surface area and uneven pore size distribution of activated carbon, and achieve fast adsorption speed, uniform pore size distribution, and developed pore structure. Effect

Inactive Publication Date: 2020-04-10
GUANGXI TEACHERS EDUCATION UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a preparation method of nitric acid oxidation modified high-temperature carbonized activated bamboo charcoal, which solves the problems of small specific surface area and uneven pore size distribution of existing activated carbon

Method used

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  • Preparation method of nitric acid oxidation modified high-temperature carbonized activated bamboo charcoal
  • Preparation method of nitric acid oxidation modified high-temperature carbonized activated bamboo charcoal
  • Preparation method of nitric acid oxidation modified high-temperature carbonized activated bamboo charcoal

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Effect test

Embodiment 1

[0027] Embodiment 1: A kind of preparation method of nitric acid oxidation modified high-temperature carbonization active bamboo charcoal, specifically: bamboo branch is dried 48h in 120 ℃ of electric heating constant temperature blowing drying ovens, under the condition of flowing nitrogen, through 800 ℃ of carbonization, obtain bamboo material carbonization. The carbonized bamboo material is pulverized and sieved through a 100-mesh sieve to obtain bamboo material powder. Take 5g of bamboo material powder and add 1mol / L HNO3 solution for impregnation, place it in a collector-type constant temperature heating magnetic stirrer at 60°C and stir for 24 hours, then wash the bamboo material powder twice with the distilled water and absolute ethanol washed last time, and then Repeated washing with new distilled water and absolute ethanol to neutrality, vacuum filtration, and drying at 60° C. for 6 hours to obtain a powder product. The powder product was calcined at 1000°C under nit...

Embodiment 2

[0028] Embodiment 2: A kind of preparation method of nitric acid oxidation modified high-temperature carbonized active bamboo charcoal, specifically: bamboo branch is dried 48h in 120 ℃ of electric heating constant temperature air blast drying box, under the condition of flowing nitrogen, through 800 ℃ of carbonization, obtain bamboo material carbonization. The carbonized bamboo material is pulverized and sieved through a 100-mesh sieve to obtain bamboo material powder. Take 5g of bamboo material powder and add 1mol / L HNO3 solution for impregnation, place it in a collector-type constant temperature heating magnetic stirrer at 60°C and stir for 24 hours, then wash the bamboo material powder twice with the distilled water and absolute ethanol washed last time, and then Repeated washing with new distilled water and absolute ethanol to neutrality, vacuum filtration, and drying at 60° C. for 6 hours to obtain a powder product. The powder product was calcined at 800°C for 4 hours u...

Embodiment 3

[0029] Embodiment 3: A kind of preparation method of nitric acid oxidation modified high-temperature carbonized active bamboo charcoal, specifically: bamboo branch is dried 48h in 120 ℃ electric heating constant temperature blower drying box, under the condition of flowing nitrogen, through 800 ℃ carbonization, obtain bamboo material carbonization. The carbonized bamboo material is pulverized and sieved through a 100-mesh sieve to obtain bamboo material powder. Take 5g of bamboo material powder and add 1mol / L HNO3 solution for impregnation, place it in a collector-type constant temperature heating magnetic stirrer at 60°C and stir for 24 hours, then wash the bamboo material powder twice with the distilled water and absolute ethanol washed last time, and then Repeated washing with new distilled water and absolute ethanol to neutrality, vacuum filtration, and drying at 60° C. for 6 hours to obtain a powder product. The powder product was calcined at 600°C under nitrogen atmosph...

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Abstract

The invention discloses a preparation method of nitric acid oxidation modified high-temperature carbonized activated bamboo charcoal, and belongs to the technical field of activated carbon processing.The preparation method comprises the following steps: S1, preparing a bamboo material carbide: drying a bamboo material at 50-150 DEG C for 10-60 hours, and carbonizing at 400-1000 DEG C under the condition of introducing nitrogen to obtain the bamboo material carbide; S2, crushing: crushing the bamboo material carbide, and sieving to obtain bamboo material powder; S3, dipping and washing: dipping the bamboo material powder in nitric acid, stirring for 10-80 hours at 30-80 DEG C, then respectively adding distilled water and absolute ethyl alcohol for repeat washing to be neutral, and drying to obtain a powder product; and S4, carrying out high-temperature calcination: calcining the powder product in a nitrogen atmosphere at 600-1100 DEG C for 2-8 hours to obtain the activated bamboo charcoal, thereby solving the problems of small specific surface area and non-uniform pore size distribution of the existing activated carbon.

Description

technical field [0001] The invention relates to the technical field of activated carbon processing, more specifically, it relates to a preparation method of nitric acid oxidation modified high-temperature carbonized activated bamboo charcoal. Background technique [0002] As the application fields of activated carbon become more and more extensive and the application directions become more and more diversified, in order to meet different environments and special purposes, the modification technology of activated carbon is also more diverse. Activated carbon modification mainly changes its pore structure, changes its surface acidity and alkalinity through physical and chemical treatment, or introduces or removes certain functional groups on its surface to make activated carbon have special adsorption properties and catalytic properties. The specific surface area and pore size distribution of activated carbon prepared by different modification methods or different activators w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/30
CPCB01J20/20
Inventor 韦良吴州杨晶罗畯欢周惠娟彭雪静
Owner GUANGXI TEACHERS EDUCATION UNIV
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