CN113683090A - Activated carbon multi-element composite activating agent - Google Patents
Activated carbon multi-element composite activating agent Download PDFInfo
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- CN113683090A CN113683090A CN202111108741.8A CN202111108741A CN113683090A CN 113683090 A CN113683090 A CN 113683090A CN 202111108741 A CN202111108741 A CN 202111108741A CN 113683090 A CN113683090 A CN 113683090A
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- activated carbon
- carbon multi
- composite activator
- organic matter
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/30—Active carbon
- C01B32/312—Preparation
- C01B32/342—Preparation characterised by non-gaseous activating agents
- C01B32/348—Metallic compounds
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/30—Active carbon
- C01B32/312—Preparation
- C01B32/318—Preparation characterised by the starting materials
Abstract
The invention discloses an activated carbon multi-element composite activator, which comprises 21-29 parts of gas generation pore-enlarging agent, 80-98 parts of activating composition agent and 13-17 parts of oxygen-containing organic salt. According to the invention, sodium bicarbonate is added, so that gas can be generated in the active carbon to assist the active carbon in reaming, and therefore, a richer specific surface area is formed, and zinc acetate is adopted to form an oxygen-containing functional group on the surface of the active carbon, so that the adsorption performance of the active carbon is improved.
Description
Technical Field
The invention belongs to the field of activated carbon, and particularly relates to an activated carbon multi-element composite activator.
Background
The activated carbon is a classical adsorption material with high specific surface area and rich pore channel structure, has strong adsorption performance, and is an industrial adsorbent with wide application. The preparation process includes soaking organic matter in zinc chloride solution, stoving, and carbonizing at 850 deg.c. The zinc chloride is used for activating the activated carbon to improve the adsorption performance of the activated carbon. However, zinc chloride alone is difficult to form into more abundant porous structures, and thus improvements are needed.
Disclosure of Invention
In order to solve the problems, the invention discloses an activated carbon multi-element composite activator. According to the invention, sodium bicarbonate is added, so that gas can be generated in the active carbon to assist the active carbon in reaming, and therefore, a richer specific surface area is formed, and zinc acetate is adopted to form an oxygen-containing functional group on the surface of the active carbon, so that the adsorption performance of the active carbon is improved.
In order to achieve the purpose, the technical scheme of the invention is as follows:
an activated carbon multi-element composite activator comprises 21-29 parts of gas generation pore-expanding agent, 80-98 parts of activating composition agent and 13-17 parts of oxygen-containing organic salt.
In a further improvement, the gas generation pore-expanding agent is sodium bicarbonate.
In a further improvement, the activating composition comprises zinc chloride and magnesium chloride, and the mass ratio of the zinc chloride to the magnesium chloride is 70-85: 10-13.
In a further refinement, the oxygen-containing organic salt is zinc acetate.
In a further improvement, the use method of the activated carbon multi-element composite activating agent comprises the following steps:
step one, drying and crushing: crushing and drying organic matters until the water content is 12-15%, and then crushing to obtain organic matter raw material powder;
step two, dipping: dipping organic matter raw material powder in an active carbon multi-element composite activator aqueous solution with the concentration of 40% for 4-20 hours;
step three, drying: fishing out the organic matter raw material powder from the activated carbon multi-element composite activating agent and drying;
step four, carbonization and activation: adding the dried organic matter raw material powder into an activation furnace, firstly heating to 140 ℃ and keeping the temperature at 200 ℃ for 0.5-1h for carbonization, then heating to 400-500 ℃ and keeping the temperature for 0.5-1h for activation, and then cooling to obtain an activated carbon product.
In a further improvement, in the first step, the organic matter is straw or wood.
In a further improvement, in the second step, the immersion time is 5 hours.
In the fourth step, the carbonization time is 0.5h, and the activation time is 1 h.
The invention has the advantages that:
according to the invention, sodium bicarbonate is added, so that gas can be generated in the active carbon to assist the active carbon in expanding pores, so that a richer specific surface area is formed, and zinc acetate is adopted to form an oxygen-containing functional group on the surface of the active carbon, so that the adsorption performance of the active carbon is improved.
Detailed Description
The technical means of the present invention will be specifically described below by way of specific embodiments.
Example 1
A preparation method of activated carbon comprises the following steps:
step one, drying and crushing: crushing straws or woods, drying the straws or the woods until the water content is about 13.5 percent, and then crushing the straws or the woods to obtain organic matter raw material powder;
step two, dipping: dipping organic matter raw material powder in an active carbon multi-element composite activator aqueous solution with the concentration of 40% for 5 hours; the activated carbon multi-component composite activator aqueous solution is formed by dissolving 40 parts by weight of activated carbon multi-component composite activator in 60 parts by weight of water. The multi-element active carbon composite activator comprises 21-29 parts by weight of sodium bicarbonate, 70-85 parts by weight of zinc chloride, 10-13 parts by weight of magnesium chloride and 13-17 parts by weight of zinc acetate.
Step three, drying: fishing out the organic matter raw material powder from the activated carbon multi-element composite activating agent and drying;
step four, carbonization and activation: adding the dried organic matter raw material powder into an activation furnace, heating to 150 ℃ for 0.5h for carbonization, heating to 480 ℃, preserving heat for 1h for activation, and cooling to obtain an activated carbon product.
The specific surface area and iodine adsorption value of activated carbon were measured according to the national standard (GB/T12496.8-2015).
From the above table, it can be seen that the specific surface area and adsorption capacity of the activated carbon are greatly increased compared to the comparative ratio of the activator of the present invention.
While embodiments of the invention have been disclosed above, it is not limited to the applications set forth in the specification and the embodiments, but rather is capable of being applied to various fields in which the invention is suited, and further modifications will readily occur to those skilled in the art, and it is therefore intended that the invention not be limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.
Claims (8)
1. The multi-element active carbon composite activator is characterized by comprising 21-29 parts of gas generation pore-enlarging agent, 80-98 parts of activating composition agent and 13-17 parts of oxygen-containing organic salt.
2. The activated carbon multi-element composite activator according to claim 1, wherein the gas generation pore-expanding agent is sodium bicarbonate.
3. The activated carbon multi-component composite activator according to claim 1, wherein the activating composition comprises zinc chloride and magnesium chloride, and the mass ratio of the zinc chloride to the magnesium chloride is 70-85: 10-13.
4. The activated carbon multi-component composite activator according to claim 1, wherein the oxygen-containing organic salt is zinc acetate.
5. The activated carbon multi-component composite activator according to any one of claims 1 to 4, wherein the activated carbon multi-component composite activator is used by the following method:
step one, drying and crushing: crushing and drying the organic matter until the water content is 12-15%, and then crushing to obtain organic matter raw material powder;
step two, dipping: dipping organic matter raw material powder in an active carbon multi-element composite activator aqueous solution with the concentration of 40% for 4-20 hours;
step three, drying: fishing out the organic matter raw material powder from the activated carbon multi-element composite activating agent and drying;
step four, carbonization and activation: adding the dried organic matter raw material powder into an activation furnace, firstly heating to 140 ℃ and keeping the temperature at 200 ℃ for 0.5-1h for carbonization, then heating to 400-500 ℃ and keeping the temperature for 0.5-1h for activation, and then cooling to obtain an activated carbon product.
6. The activated carbon multi-component composite activator of claim 5, wherein in the first step, the organic matter is straw or wood.
7. The activated carbon multi-component composite activator according to claim 5, wherein in the second step, the impregnation time is 5 hours.
8. The activated carbon multi-component composite activator of claim 5, wherein in the fourth step, the carbonization time is 0.5h, and the activation time is 1 h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111108741.8A CN113683090A (en) | 2021-09-23 | 2021-09-23 | Activated carbon multi-element composite activating agent |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111108741.8A CN113683090A (en) | 2021-09-23 | 2021-09-23 | Activated carbon multi-element composite activating agent |
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| CN202111108741.8A Withdrawn CN113683090A (en) | 2021-09-23 | 2021-09-23 | Activated carbon multi-element composite activating agent |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114702052A (en) * | 2022-05-24 | 2022-07-05 | 潍坊泽隆新材料有限公司 | Method for producing light magnesium carbonate by using byproduct magnesium hydroxide |
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| KR20130122332A (en) * | 2012-04-30 | 2013-11-07 | 인하대학교 산학협력단 | Preparation method of n-doped activated carbons for carbon dioxide capture |
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| CN110078070A (en) * | 2019-04-11 | 2019-08-02 | 西安石油大学 | A kind of preparation method of the oily sludge base absorption carbon material for oily waste water treatment |
| CN110817869A (en) * | 2019-12-04 | 2020-02-21 | 山东建筑大学 | Zinc phosphate-organic acid composite activator and method for preparing activated carbon by using same |
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- 2021-09-23 CN CN202111108741.8A patent/CN113683090A/en not_active Withdrawn
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85108721A (en) * | 1985-11-25 | 1987-06-10 | 南京林业大学 | Compound activator for making active carbon |
| CN101798082A (en) * | 2009-02-08 | 2010-08-11 | 陈宝江 | Zn-Ca composite activating agent for producing active carbon by chemical method |
| CN102040218A (en) * | 2011-01-19 | 2011-05-04 | 成都信息工程学院 | New method for producing active carbon by using biomass wastes |
| KR20130122332A (en) * | 2012-04-30 | 2013-11-07 | 인하대학교 산학협력단 | Preparation method of n-doped activated carbons for carbon dioxide capture |
| CN104045077A (en) * | 2014-05-27 | 2014-09-17 | 陈永 | Graphene three-dimensional hierarchical porous carbon material and preparation method thereof |
| WO2016072932A1 (en) * | 2014-11-04 | 2016-05-12 | National University Of Singapore | Activated carbon, hydrochar and processes for making same |
| CN107108232A (en) * | 2014-11-04 | 2017-08-29 | 新加坡国立大学 | Activated carbon, hydro-thermal charcoal and preparation method thereof |
| CN106115698A (en) * | 2016-06-24 | 2016-11-16 | 浙江大学 | A kind of utilization reclaims useless charcoal method preparing nitrogenous porous charcoal and products thereof and application |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114702052A (en) * | 2022-05-24 | 2022-07-05 | 潍坊泽隆新材料有限公司 | Method for producing light magnesium carbonate by using byproduct magnesium hydroxide |
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