CN107128917A - 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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- CN107128917A CN107128917A CN201710270643.1A CN201710270643A CN107128917A CN 107128917 A CN107128917 A CN 107128917A CN 201710270643 A CN201710270643 A CN 201710270643A CN 107128917 A CN107128917 A CN 107128917A
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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, dried after ature of coal charcoal is crushed, be then added to concentration to soak 8 12h in 25 40wt% potassium hydroxide solutions, filter；The filter residue being filtrated to get is placed in heat-activated in Muffle furnace, room temperature is subsequently cooled to, obtains activator；By activator pickling, then neutrality is washed to, finally sieves, produce；The inventive method technique is simple and convenient to operate, and obtained activated carbon has high specific surface area and flourishing microcellular structure, 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.
With the development of society and science and technology, the performance to activated carbon it is also proposed high requirement.For example, the work of prior art
Property charcoal specific surface area than relatively low, microcellular structure is not flourishing enough, so as to cause charcoal absorption capacity relatively low, limits it in doctor
The further development in the fields such as medicine industry, drinking water treatment, catalyst.
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, and obtained activated carbon has high specific surface area and flourishing micropore knot
Structure.
Technical scheme
A kind of preparation method of active carbon with high specific surface area, comprises the following steps：
(1) dried after ature of coal charcoal is crushed, be then added in potassium hydroxide solution and soak 8-12h, filtered；
(2) filter residue being filtrated to get is placed in heat-activated in Muffle furnace, is subsequently cooled to room temperature, obtain activator；
(3) by activator pickling, then neutrality is washed to, finally sieves, produce；
In step (1), the concentration of the potassium hydroxide solution is 25-40wt%.
Further, in step (1), the weight ratio of the ature of coal charcoal and potassium hydroxide solution is 1:3-6.
Further, in step (1), the ature of coal charcoal is crushed to particle diameter for 100-400 μm.
Further, in step (2), the activation temperature is 700-800 DEG C, and the time is 60-120min.
Further, in step (3), the pickling is the watery hydrochloric acid pickling for using concentration for 3-5wt%.
Further, in step (3), the sieving was 100-200 mesh sieves.
Beneficial effects of the present invention：The inventive method technique is simple and convenient to operate, and obtained activated carbon has high ratio table
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
Anthracite is crushed to after 100 μm and dried, 10h is soaked in the potassium hydroxide solution for being then added to 30wt%, institute
The weight ratio for stating ature of coal charcoal and potassium hydroxide solution is 1:3, filtering；The filter residue being filtrated to get is placed in heat in Muffle furnace and lived
Change, the activation temperature is 720 DEG C, and the time is 80min, is subsequently cooled to room temperature, obtains activator；It is with concentration by activator
3wt% watery hydrochloric acid pickling, then neutrality is washed to, 200 mesh sieves are finally crossed, activated carbon are produced, yield is 68%.
Experiment is measured, and specific surface area is 3467m2/ g, iodine number is 2835mg/g, and methylene blue value is 812mg/g.
Embodiment 2
Anthracite is crushed to after 200 μm and dried, 12h is soaked in the potassium hydroxide solution for being then added to 35wt%, institute
The weight ratio for stating ature of coal charcoal and potassium hydroxide solution is 1:4, filtering；The filter residue being filtrated to get is placed in heat in Muffle furnace and lived
Change, the activation temperature is 750 DEG C, and the time is 70min, is subsequently cooled to room temperature, obtains activator；It is with concentration by activator
4wt% watery hydrochloric acid pickling, then neutrality is washed to, 200 mesh sieves are finally crossed, activated carbon are produced, yield is 61%.
Experiment is measured, and specific surface area is 3432m2/ g, iodine number is 2817mg/g, and methylene blue value is 835mg/g.
Embodiment 3
Bituminous coal is crushed to after 300 μm and dried, 8h, the coal are soaked in the potassium hydroxide solution for being then added to 40wt%
The weight ratio of matter charcoal and potassium hydroxide solution is 1:6, filtering；The filter residue being filtrated to get is placed in heat-activated in Muffle furnace, institute
Activation temperature is stated for 780 DEG C, the time is 60min, is subsequently cooled to room temperature, obtains activator；With concentration it is 5wt% by activator
Watery hydrochloric acid pickling, then be washed to neutrality, finally cross 200 mesh sieves, produce activated carbon, yield is 52%.
Experiment is measured, and specific surface area is 3500m2/ g, iodine number is 2926mg/g, and methylene blue value is 809mg/g.
Claims (6)
1. a kind of preparation method of active carbon with high specific surface area, it is characterised in that comprise the following steps：
(1) dried after ature of coal charcoal is crushed, be then added in potassium hydroxide solution and soak 8-12h, filtered；
(2) filter residue being filtrated to get is placed in heat-activated in Muffle furnace, is subsequently cooled to room temperature, obtain activator；
(3) by activator pickling, then neutrality is washed to, finally sieves, produce；
In step (1), the concentration of the potassium hydroxide solution is 25-40wt%.
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 coal
The weight ratio of matter charcoal and potassium hydroxide solution is 1:3-6.
3. 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 coal
Matter charcoal is crushed to particle diameter for 100-400 μm.
4. the preparation method of active carbon with high specific surface area as claimed in claim 1, it is characterised in that in step (2), the work
It is 700-800 DEG C to change temperature, and the time is 60-120min.
5. the preparation method of active carbon with high specific surface area as claimed in claim 1, it is characterised in that in step (3), the acid
Wash to use concentration for 3-5wt% watery hydrochloric acid pickling.
6. the preparation method of the active carbon with high specific surface area as described in any one of claim 1 to 5, it is characterised in that step (3)
In, the sieving was 100-200 mesh sieves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710270643.1A CN107128917A (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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| CN201710270643.1A CN107128917A (en) | 2017-04-24 | 2017-04-24 | A kind of preparation method of active carbon with high specific surface area |
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| CN107128917A true CN107128917A (en) | 2017-09-05 |
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| CN201710270643.1A Pending CN107128917A (en) | 2017-04-24 | 2017-04-24 | A kind of preparation method of active carbon with high specific surface area |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112876310A (en) * | 2021-02-05 | 2021-06-01 | 内蒙古博大实地化学有限公司 | Compound fertilizer containing soil conditioning performance and preparation method thereof |
| CN113233462A (en) * | 2021-03-15 | 2021-08-10 | 河南省冶金研究所有限责任公司 | Preparation method of lignite-based activated carbon with high specific surface area |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1948147A (en) * | 2006-11-10 | 2007-04-18 | 华南理工大学 | Preparation method of high specific surface area coal mass active carbon |
| CN101209839A (en) * | 2007-12-24 | 2008-07-02 | 中国科学院山西煤炭化学研究所 | Preparation method of high performance active carbon |
| CN103172064A (en) * | 2013-04-12 | 2013-06-26 | 宁夏大学 | Low-ash coal-based activated carbon quick activation production technology |
| CN103896269A (en) * | 2014-03-31 | 2014-07-02 | 石河子大学 | Microwave radiation preparation method of coal-based active carbon for removing pyrene |
-
2017
- 2017-04-24 CN CN201710270643.1A patent/CN107128917A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1948147A (en) * | 2006-11-10 | 2007-04-18 | 华南理工大学 | Preparation method of high specific surface area coal mass active carbon |
| CN101209839A (en) * | 2007-12-24 | 2008-07-02 | 中国科学院山西煤炭化学研究所 | Preparation method of high performance active carbon |
| CN103172064A (en) * | 2013-04-12 | 2013-06-26 | 宁夏大学 | Low-ash coal-based activated carbon quick activation production technology |
| CN103896269A (en) * | 2014-03-31 | 2014-07-02 | 石河子大学 | Microwave radiation preparation method of coal-based active carbon for removing pyrene |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112876310A (en) * | 2021-02-05 | 2021-06-01 | 内蒙古博大实地化学有限公司 | Compound fertilizer containing soil conditioning performance and preparation method thereof |
| CN112876310B (en) * | 2021-02-05 | 2022-06-21 | 内蒙古博大实地化学有限公司 | Compound fertilizer containing soil conditioning performance and preparation method thereof |
| CN113233462A (en) * | 2021-03-15 | 2021-08-10 | 河南省冶金研究所有限责任公司 | Preparation method of lignite-based activated carbon with high specific surface area |
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Application publication date: 20170905 |