CN107140634A - A kind of preparation method of active carbon with high specific surface area - Google Patents
A kind of preparation method of active carbon with high specific surface area Download PDFInfo
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- CN107140634A CN107140634A CN201710271143.XA CN201710271143A CN107140634A CN 107140634 A CN107140634 A CN 107140634A CN 201710271143 A CN201710271143 A CN 201710271143A CN 107140634 A CN107140634 A CN 107140634A
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- Prior art keywords
- surface area
- specific surface
- high specific
- preparation
- active carbon
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/12—Surface area
Abstract
The present invention relates to a kind of preparation method of active carbon with high specific surface area, using hard fruit shell as raw material, hard fruit shell is crushed to less than 200 μm, drying is then added in solution of potassium carbonate and soaks 10 15h, the weight ratio of the hard fruit shell and solution of potassium carbonate is 1:35, filtering；The filter residue being filtrated to get is placed in Muffle furnace, and is passed through carbon dioxide and is activated, room temperature is subsequently cooled to, sieves, produces.The inventive method technique is simple and convenient to operate, the problem of in the absence of equipment corrosion and environmental pollution, the step of washing and pickling is not related to yet, obtained activated carbon has the microcellular structure of high specific surface area and prosperity, with excellent absorption property.
Description
Technical field
The present invention relates to a kind of preparation method of activated carbon, especially a kind of preparation method of active carbon with high specific surface area,
Belong to technical field of fine.
Background technology
Activated carbon be it is a kind of there is abundant pore structure and the carbonaceous sorbing material of huge specific surface area, it its have energy of adsorption
Power is strong, chemical stability is good, mechanical strength is high, and can facilitate the features such as regenerating, and is widely used in industry, agricultural, national defence, friendship
The fields such as logical, medical and health, environmental protection, its demand is improved with social development and living standards of the people, in rising year by year
Trend, the especially increasingly raising recently as environmental protection requirement so that the demand of domestic and international activated carbon is increasingly
Greatly, increase year by year.And active carbon with high specific surface area due to huge specific surface area is big, chemically stable is good, adsorption capacity is big,
Conduct electricity very well, regenerability preferably, insoluble in most solvent the advantages of, be widely used to Gas Phase Adsorption, liquid phase inhale
Attached, catalytic reaction, the field such as double layer capacitor.
When preparing active carbon with high specific surface area in the prior art, a large amount of highly basic are often used, it is strong to equipment corrosion, grasped
Make personnel there is also potential safety hazard, the problems such as also bringing environmental pollution.
The content of the invention
There is provided a kind of active carbon with high specific surface area for the deficiency existed present invention aim to address activated carbon in the prior art
Preparation method, this method technique is simple and convenient to operate, without using highly basic in technique, and reaction condition is gentle, obtained activated carbon
With high specific surface area and flourishing microcellular structure.
Technical scheme
A kind of preparation method of active carbon with high specific surface area, comprises the following steps：
(1) using hard fruit shell as raw material, hard fruit shell is crushed to less than 200 μm, drying is then added to potassium carbonate molten
10-15h is soaked in liquid, is filtered；
(2) filter residue being filtrated to get is placed in Muffle furnace, and is passed through carbon dioxide and activated, is subsequently cooled to
Room temperature, sieving, is produced；
In step (1), the weight ratio of the hard fruit shell and solution of potassium carbonate is 1:3-5.
In step (1), the hard fruit shell is selected from walnut shell, peach shell, apricot shell, coconut husk, palm shell etc..
Further, in step (1), the concentration of the solution of potassium carbonate is 30-40wt%
Further, in step (1), the drying temperature is 110-130 DEG C, and the time is 2-5h.
Further, in step (2), the activation temperature is 800-950 DEG C, and the time is 6-10h.
Further, in step (2), the sieving was 100-200 mesh sieves.
Beneficial effects of the present invention：The inventive method technique is simple and convenient to operate, in the absence of equipment corrosion and environmental pollution
The problem of, the step of washing and pickling is not related to yet, obtained activated carbon has high specific surface area and flourishing microcellular structure,
With excellent absorption property.
Embodiment
With reference to embodiment, the invention will be further described.It will be appreciated, however, that the following examples can make
The present invention, but do not limit the invention in any way is more fully understood in one of ordinary skill in the art.
Embodiment 1
Using walnut shell as raw material, walnut shell is crushed to less than 200 μm, 110 DEG C of baking 4h are then added to 30wt% carbon
Soak 14h in sour potassium solution, the weight ratio of walnut shell and solution of potassium carbonate is 1:5, filtering；The filter residue being filtrated to get is placed in horse
Not in stove, and it is passed through carbon dioxide and is activated, activation temperature is 850 DEG C, and the time is 8h, is subsequently cooled to room temperature, mistake
100 mesh sieves, produce activated carbon, and yield is 61%.
Experiment is measured, and specific surface area is 3217m2/ g, iodine number is 2615mg/g, and methylene blue value is 788mg/g.
Embodiment 2
Using coconut husk as raw material, coconut husk is crushed to less than 200 μm, 120 DEG C of baking 3h are then added to 35wt% potassium carbonate
Soak 12h in solution, the weight ratio of coconut husk and solution of potassium carbonate is 1:4, filtering；The filter residue being filtrated to get is placed in Muffle furnace
In, and be passed through carbon dioxide and activated, activation temperature is 950 DEG C, and the time is 7h, is subsequently cooled to room temperature, crosses 100 mesh
Sieve, produces activated carbon, yield is 53%.
Experiment is measured, and specific surface area is 3256m2/ g, iodine number is 2708mg/g, and methylene blue value is 770mg/g.
Embodiment 3
Using apricot shell as raw material, apricot shell is crushed to less than 200 μm, 130 DEG C of baking 3h are then added to 40wt% potassium carbonate
Soak 10h in solution, the weight ratio of apricot shell and solution of potassium carbonate is 1:3, filtering；The filter residue being filtrated to get is placed in Muffle furnace
In, and be passed through carbon dioxide and activated, activation temperature is 900 DEG C, and the time is 6h, is subsequently cooled to room temperature, crosses 100 mesh
Sieve, produces activated carbon, yield is 58%.
Experiment is measured, and specific surface area is 3315m2/ g, iodine number is 2688mg/g, and methylene blue value is 726mg/g.
Claims (5)
1. a kind of preparation method of active carbon with high specific surface area, its feature is being, comprises the following steps：
(1) using hard fruit shell as raw material, hard fruit shell is crushed to less than 200 μm, drying is then added in solution of potassium carbonate
Soak 10-15h, filtering；
(2) filter residue being filtrated to get is placed in Muffle furnace, and is passed through carbon dioxide and activated, be subsequently cooled to room
Temperature, sieving, is produced；
In step (1), the weight ratio of the hard fruit shell and solution of potassium carbonate is 1:3-5.
2. the preparation method of active carbon with high specific surface area as claimed in claim 1, it is characterised in that in step (1), the carbon
The concentration of sour potassium solution is 30-40wt%.
3. in the preparation method of active carbon with high specific surface area as claimed in claim 1, step (1), the drying temperature is
110-130 DEG C, the time is 2-5h.
4. in the preparation method of active carbon with high specific surface area as claimed in claim 1, step (2), the activation temperature is
800-950 DEG C, the time is 6-10h.
5. the preparation method of active carbon with high specific surface area as claimed in claim 1 or 2 or 3 or 4, it is characterised in that step (2)
In, the sieving was 100-200 mesh sieves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710271143.XA CN107140634A (en) | 2017-04-24 | 2017-04-24 | A kind of preparation method of active carbon with high specific surface area |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710271143.XA CN107140634A (en) | 2017-04-24 | 2017-04-24 | A kind of preparation method of active carbon with high specific surface area |
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| CN107140634A true CN107140634A (en) | 2017-09-08 |
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| CN201710271143.XA Pending CN107140634A (en) | 2017-04-24 | 2017-04-24 | A kind of preparation method of active carbon with high specific surface area |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102442666A (en) * | 2011-09-28 | 2012-05-09 | 青岛科技大学 | Preparation method for biomass medicinal charcoal |
| CN104003387A (en) * | 2014-06-10 | 2014-08-27 | 厦门大学 | Method for preparing active carbon by taking biomass pyrolytic carbon as raw material |
| CN104649265A (en) * | 2015-02-04 | 2015-05-27 | 昆明理工大学 | Method for preparing active carbon with high specific surface area from walnut shell |
| CN106006635A (en) * | 2016-05-18 | 2016-10-12 | 天津科技大学 | Method for preparing activated carbon with high specific surface area through rapid activation under fluidization |
-
2017
- 2017-04-24 CN CN201710271143.XA patent/CN107140634A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102442666A (en) * | 2011-09-28 | 2012-05-09 | 青岛科技大学 | Preparation method for biomass medicinal charcoal |
| CN104003387A (en) * | 2014-06-10 | 2014-08-27 | 厦门大学 | Method for preparing active carbon by taking biomass pyrolytic carbon as raw material |
| CN104649265A (en) * | 2015-02-04 | 2015-05-27 | 昆明理工大学 | Method for preparing active carbon with high specific surface area from walnut shell |
| CN106006635A (en) * | 2016-05-18 | 2016-10-12 | 天津科技大学 | Method for preparing activated carbon with high specific surface area through rapid activation under fluidization |
Non-Patent Citations (1)
| Title |
|---|
| 陈涵: "采用碳酸钾活化法制备油茶壳活性炭", 《福建农林大学学报（自然科学版）》 * |
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Application publication date: 20170908 |
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| RJ01 | Rejection of invention patent application after publication |