Preparation method of micropore-developed activated carbon

An activated carbon, a developed technology, is applied in the field of preparation of microporous activated carbon, which can solve the problems of diversified pore size distribution and small micropore ratio, and achieve the effects of excellent performance, strong adsorption and good removal effect.

Active Publication Date: 2016-04-20
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the activated carbon prepared by the above method has a large specific surface area, the pore size distribution is diversified and the micropore ratio is small.

Method used

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  • Preparation method of micropore-developed activated carbon
  • Preparation method of micropore-developed activated carbon
  • Preparation method of micropore-developed activated carbon

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A preparation method of activated carbon with developed micropores includes the following steps:

[0029] (1) The Enteromorpha powder is dried and crushed and passed through a 40-mesh sieve. The Enteromorpha powder is heated in a crucible with a lid in a carbonization furnace, and the heating rate is controlled at 5°C / min. After the temperature is raised, the material is maintained at 700°C and heated for 10 minutes. After being discharged from the furnace, the Enteromorpha carbonized material is obtained.

[0030] (2) Add potassium tartrate to the carbonized material of Enteromorpha in a mass ratio of 3:1, mix well, add deionized water, stir well; dry in a 110 ℃ oven to obtain the mixture .

[0031] (3) Put the processed mixture in step (2) into the tubular resistor, under the protection of nitrogen, heat up to 800℃, activate for 1h, stop heating, cool to room temperature, and take it out; wash with 4% dilute hydrochloric acid, Wash with deionized water to a pH of 6.5-7.0, ...

Embodiment 2

[0034] A preparation method of activated carbon with developed micropores includes the following steps:

[0035] (1) Enteromorpha powder is obtained by drying Enteromorpha powder and pulverizing it through a 40-mesh sieve. The Enteromorpha powder is heated in a crucible with a lid in a carbonization furnace, and the heating rate is controlled at 5°C / min. After the temperature is raised, the material is maintained at 700°C and heated for 10 minutes. After being discharged from the furnace, the Enteromorpha carbonized material is obtained.

[0036] (2) Add potassium tartrate to the carbonized material of Enteromorpha enterocarp at a mass ratio of 2:1, mix well, add deionized water, and stir evenly; dry in a 110 ℃ oven to obtain the mixture .

[0037] (3) Put the processed mixture in step (2) into a tubular resistor, under the protection of nitrogen, heat up to 700°C, activate for 0.5h, stop heating, cool to room temperature, and take it out; wash with 4% dilute hydrochloric acid, Aft...

Embodiment 3

[0039] A preparation method of activated carbon with developed micropores includes the following steps:

[0040] (1) Enteromorpha powder is obtained by drying Enteromorpha powder and pulverizing it through a 40-mesh sieve. The Enteromorpha powder is heated in a crucible with a lid in a carbonization furnace, and the heating rate is controlled at 5°C / min. After the temperature is raised, the material is maintained at 700°C and heated for 10 minutes. After being discharged from the furnace, the Enteromorpha carbonized material is obtained.

[0041] (2) Potassium tartrate was added to the carbonized material of Enteromorpha according to the mass ratio of potassium tartrate to the carbonized material of Enteromorpha japonica, mixed evenly, added deionized water, and stirred evenly; dried in a 110 ℃ oven to obtain the mixture .

[0042] (3) Put the processed mixture in step (2) into the tubular resistor, under the protection of nitrogen, heat up to 900℃, activate for 1 hour, stop heating...

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Abstract

The invention relates to a preparation method of micropore-developed activated carbon, which comprises the following steps: (1) drying or airing Enteromorpha, pulverizing, and passing through a 40-50-mesh screen to obtain Enteromorpha powder; heating the Enteromorpha powder to 550-700 DEG C, and keeping the temperature to obtain an Enteromorpha carbonization material; (2) adding potassium tartrate into the Enteromorpha carbonization material according to the mass ratio of (1-5):1, uniformly mixing, adding deionized water, stirring uniformly, and drying to obtain a mixture; and (3) heating the mixture to 500-900 DEG C to activate for 0.5-2.5 hours in a nitrogen protective atmosphere, stopping heating, cooling to room temperature, washing with dilute hydrochloric acid, washing with deionized water until the pH value is 6.5-7.0, and drying or naturally airing. The micropore specific area of the activated carbon is 93.36%, the microporosity is 67.3%, the pore size is 2.241nm, and the activated carbon has high adsorptivity and favorable properties.

Description

Technical field [0001] The invention relates to a method for preparing activated carbon with developed micropores, and belongs to the technical field of activated carbon preparation. Background technique [0002] Activated carbon is a black porous solid carbon. It has the characteristics of strong adsorption capacity, good chemical stability, good mechanical properties, large specific surface area, developed pore structure, and convenient regeneration. Therefore, it is widely used in petrochemical industry, power industry, chemical industry, food processing, water treatment, Catalysts and catalyst carriers and other fields. At present, the raw materials for preparing activated carbon are mainly coal, wood, petroleum and biomass materials. Among them, the characteristics of biomass sources such as wide sources, low cost, sustainable development and renewability have attracted more and more attention from researchers. Researchers use coconut shells, catkins, corn stalks, peanut s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/12
CPCC01P2004/03C01P2006/16
Inventor 岳钦艳朱秀珍高原高宝玉
Owner SHANDONG UNIV
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