CN102992321A - Method for preparing activated carbon with tobacco stems - Google Patents
Method for preparing activated carbon with tobacco stems Download PDFInfo
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- CN102992321A CN102992321A CN2012104123285A CN201210412328A CN102992321A CN 102992321 A CN102992321 A CN 102992321A CN 2012104123285 A CN2012104123285 A CN 2012104123285A CN 201210412328 A CN201210412328 A CN 201210412328A CN 102992321 A CN102992321 A CN 102992321A
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- acid
- tobacco stems
- activated carbon
- rinsing
- gac
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Abstract
The invention relates to a method for preparing activated carbon with tobacco stems. The method comprises the steps of drying and grinding 15g of tobacco stems; impregnating the ground tobacco stems with 30-50% of organic acid solution with mass being 2-4 times that of the tobacco stems for 24-48 hours; heating the solution to the carbonization temperature of 700-900 DEG C at a rate of 30 DEG C/min and preserving heat for 10-20 minutes; after carbonization is completed, adopting hot water at 80 DEG C for rinsing; after rinsing, adjusting the pH value of the materials to neutral; and drying the materials at 120 DEG C for 2 hours and grinding the dried materials, thus obtaining the activated carbon, wherein the inorganic acid can be hydrochloric acid, sulfuric acid, nitric acid, phosphoric acid, acetic acid and the like. The method has the beneficial effects that the activated carbon can be prepared in a simple and practicable manner; resource waste is avoided; the environment is protected; and the novel flavor for tobaccos is developed.
Description
Technical field:
The present invention relates to a kind of preparation field of gac, be specifically related to the preparation field that a kind of tobacco rods prepares gac.
Technical background:
Tobacco is a kind of very important cash crop, has special economic worth.Tobacco rods belongs to renewable resources as the part of tobacco, and is annual after plucking the receipts tobacco leaf, abandons in field formation solid waste composing environment to pollute, or dried to burn and cause topsoil.This has not only destroyed ecotope, and wasted can be for the resource of utilizing.Therefore, exploration tobacco rods comprehensive utilization technique is significant.
Gac is the carbonaceous material with flourishing pore texture, huge specific surface area and good absorption property.Gac has been widely used in national defence, chemical industry, oil, weaving, food, medicine, nuclear industry, urban construction, environment protection and human lives's all respects at present.Gac in the market mainly is comprised of micropore, only contain a small amount of mesopore and macropore, small molecular to adsorbed gas and liquid is quite favourable, yet for some polymkeric substance, organic electrolyte and inorganic macromolecular adsorption effect are relatively poor, effect in the fields such as preparation of support of the catalyst and electrode material for electric double layer capacitor is also undesirable, thereby the pore structure to gac is had higher requirement, be that gac should have higher mesopore content, gac in particular for water treatment requires mesopore content to reach about 20%, to improve the adsorptive power to macromolecule contaminants such as phenols in the water.Therefore, the production of mesopore activated carbon more and more is subject to people's attention.
At present, the report for preparing gac there are no tobacco rods.
Summary of the invention:
The purpose of this invention is to provide the preparation method that tobacco rods prepares gac, can be easy, the preparation gac of easy row, avoid the wasting of resources, protection of the environment.
Technical scheme of the present invention is 15 g tobacco rods are dry, pulverizing; With its quality 2-4 30-50% organic acid soln dipping 24-48 h doubly; Temperature rise rate with 30 ℃/min is heated to carbonization temperature 700-900 ℃, soaking time 10-20 min; Charing adopts 80 ℃ hot water to carry out rinsing after finishing; After the rinsing, transfer the pH value of material to neutral; 120 ℃, dry 2 h, pulverize, and get final product.Mineral acid can be hydrochloric acid, sulfuric acid, nitric acid, phosphoric acid, acetic acid etc.
Principle of the present invention is take tobacco rods as raw material, and the technique that adopts a step charring to prepare mesopore activated carbon take phosphoric acid as activator can effectively prepare gac.
Useful benefit:
The present invention can be easy, the preparation gac of easy row, avoids the wasting of resources, protection of the environment.
Embodiment:
Embodiment 1: 15 g tobacco rods are dry, pulverizing; 50% hydrochloric acid soln with 2 times of its quality floods 48 h; Temperature rise rate with 30 ℃/min is heated to 900 ℃ of carbonization temperatures, soaking time 20 min; Charing adopts 80 ℃ hot water to carry out rinsing after finishing; After the rinsing, transfer the pH value of material to neutral; 120 ℃, dry 2 h, pulverize, and get final product.
Embodiment 2: 15 g tobacco rods are dry, pulverizing; 30% phosphoric acid solution with 4 times of its quality floods 24 h; Temperature rise rate with 30 ℃/min is heated to 700 ℃ of carbonization temperatures, soaking time 10min; Charing adopts 80 ℃ hot water to carry out rinsing after finishing; After the rinsing, transfer the pH value of material to neutral; 120 ℃, dry 2 h, pulverize, and get final product.
Embodiment 3: 15 g tobacco rods are dry, pulverizing; 40% organic acid soln with 3 times of its quality floods 48 h; Temperature rise rate with 30 ℃/min is heated to 800 ℃ of carbonization temperatures, soaking time 20 min; Charing adopts 80 ℃ hot water to carry out rinsing after finishing; After the rinsing, transfer the pH value of material to neutral; 120 ℃, dry 2 h, pulverize, and get final product.
Claims (2)
1. a tobacco rods prepares the preparation method of gac, it is characterized in that: 15 g tobacco rods are dry, pulverize; With its quality 2-4 30-50% organic acid soln dipping 24-48 h doubly; Temperature rise rate with 30 ℃/min is heated to carbonization temperature 700-900 ℃, soaking time 10-20 min; Charing adopts 80 ℃ hot water to carry out rinsing after finishing; After the rinsing, transfer the pH value of material to neutral; 120 ℃, dry 2 h, pulverize, and get final product.
2. according to claims 1 described mineral acid, it is characterized in that: can be hydrochloric acid, sulfuric acid, nitric acid, phosphoric acid, acetic acid etc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104123285A CN102992321A (en) | 2012-10-25 | 2012-10-25 | Method for preparing activated carbon with tobacco stems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104123285A CN102992321A (en) | 2012-10-25 | 2012-10-25 | Method for preparing activated carbon with tobacco stems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102992321A true CN102992321A (en) | 2013-03-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012104123285A Pending CN102992321A (en) | 2012-10-25 | 2012-10-25 | Method for preparing activated carbon with tobacco stems |
Country Status (1)
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| CN (1) | CN102992321A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014077714A1 (en) | 2012-11-16 | 2014-05-22 | Politechnika Poznańska | Production of activated carbon from tobacco leaves by simultaneous carbonization and self-activation and the activated carbon thus obtained |
| CN104355946A (en) * | 2014-12-05 | 2015-02-18 | 商丘三利新能源有限公司 | Special ecological carbon-based fertilizer for tobacco |
| CN112645327A (en) * | 2020-12-21 | 2021-04-13 | 中国烟草总公司郑州烟草研究院 | Preparation method of porous carbon core-shell composite material |
| CN112645328A (en) * | 2020-12-21 | 2021-04-13 | 中国烟草总公司郑州烟草研究院 | Preparation method and application of nitrogen-containing porous carbon material |
| CN112645324A (en) * | 2020-12-21 | 2021-04-13 | 中国烟草总公司郑州烟草研究院 | Porous carbon composite material with core-shell structure and preparation method and application thereof |
-
2012
- 2012-10-25 CN CN2012104123285A patent/CN102992321A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014077714A1 (en) | 2012-11-16 | 2014-05-22 | Politechnika Poznańska | Production of activated carbon from tobacco leaves by simultaneous carbonization and self-activation and the activated carbon thus obtained |
| CN104355946A (en) * | 2014-12-05 | 2015-02-18 | 商丘三利新能源有限公司 | Special ecological carbon-based fertilizer for tobacco |
| CN112645327A (en) * | 2020-12-21 | 2021-04-13 | 中国烟草总公司郑州烟草研究院 | Preparation method of porous carbon core-shell composite material |
| CN112645328A (en) * | 2020-12-21 | 2021-04-13 | 中国烟草总公司郑州烟草研究院 | Preparation method and application of nitrogen-containing porous carbon material |
| CN112645324A (en) * | 2020-12-21 | 2021-04-13 | 中国烟草总公司郑州烟草研究院 | Porous carbon composite material with core-shell structure and preparation method and application thereof |
| CN112645324B (en) * | 2020-12-21 | 2022-10-04 | 中国烟草总公司郑州烟草研究院 | Porous carbon composite material with core-shell structure and preparation method and application thereof |
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Application publication date: 20130327 |