CN107128915A - A kind of preparation method of the activated carbon of high absorption capacity - Google Patents
A kind of preparation method of the activated carbon of high absorption capacity Download PDFInfo
- Publication number
- CN107128915A CN107128915A CN201710270828.2A CN201710270828A CN107128915A CN 107128915 A CN107128915 A CN 107128915A CN 201710270828 A CN201710270828 A CN 201710270828A CN 107128915 A CN107128915 A CN 107128915A
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- China
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- activated carbon
- preparation
- absorption capacity
- high absorption
- phosphoric acid
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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
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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
- C01P2006/14—Pore volume
Abstract
The present invention relates to a kind of preparation method of the activated carbon of high absorption capacity, using hard fruit shell as raw material, 100 300 μm are crushed to after hard fruit shell is air-dried, is then added in the phosphoric acid solution that concentration is 30 40wt% and soaks 8 12h, the weight ratio of hard fruit shell and phosphoric acid solution is 1:24, filtering；The filter residue being filtrated to get is placed in Muffle furnace and activated, room temperature is subsequently cooled to, activator is obtained；Activator is washed to neutrality, then dries, sieve, produce.The inventive method technique is simple and convenient to operate, and extensively, cost is low for raw material sources, and obtained activated carbon has high specific surface area and high specific pore volume product, with excellent adsorption capacity.
Description
Technical field
The present invention relates to a kind of preparation method of activated carbon, especially a kind of preparation side of the activated carbon of high absorption capacity
Method, belongs 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.
The activated carbon specific surface area of prior art is generally all in 800~1500m2/ g, adsorption capacity is limited, and adsorption capacity has
Limit.In the last few years, the active of high-specific surface area was developed into focus, and active carbon with high specific surface area is often microporous activated carbon (its
Aperture be less than 2nm), be mainly used in Gas Phase Adsorption or liquid phase small molecule absorption, for the decolouring in liquid phase and some
The absorption of bigger molecule is inapplicable, and in liquid-phase adsorption processes, due to the solvation of solute molecule, often makes activated carbon
The middle absorption effective pore diameter of these liquid phase molecules needs to reach 2~3 times of original molecular diameter, even more many.Therefore, such as
Fruit will significantly improve the liquid phase adsorption ability of activated carbon, especially to larger liquid phase molecule, then activated carbon will not only have
High specific surface area, while also to there is the mesopore of prosperity, its long and is that activated carbon will have high specific pore volume to accumulate.Therefore,
Prepare application of the activated carbon with high pore volume for expanding activated carbon significant.
The content of the invention
There is provided a kind of activity of high absorption capacity for the deficiency existed present invention aim to address activated carbon in the prior art
The preparation method of charcoal, activated carbon made from this method has high specific surface area and high specific pore volume product, with excellent absorption
Ability.
Technical scheme
A kind of preparation method of the activated carbon of high absorption capacity, comprises the following steps：
(1) using hard fruit shell as raw material, 100-300 μm is crushed to after hard fruit shell is air-dried, phosphoric acid is then added to molten
8-12h is soaked in liquid, is filtered；
(2) filter residue being filtrated to get is placed in Muffle furnace and activated, be subsequently cooled to room temperature, obtain activator；
(3) activator is washed to neutrality, then dries, sieves, produce；
In step (1), the weight ratio of the hard fruit shell and phosphoric acid solution is 1:2-4.
In step (1), the concentration of the phosphoric acid solution is 30-40wt%.
In step (1), the hard fruit shell can be coconut husk, walnut shell, apricot shell etc..
Further, in step (2), the activation temperature is 450-550 DEG C, and the time is 4-6h.
Further, in step (2), during activation act, heating rate is controlled in 6~8 DEG C/min.
Further, in step (2), the drying temperature is 110-120 DEG C, and the time is 2-4h
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, and extensively, cost is low for raw material sources, is made
Activated carbon there is high specific surface area and high specific pore volume product, with excellent adsorption capacity.
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, 100-300 μm is crushed to after walnut shell is air-dried, the phosphoric acid for being then added to 30wt% is molten
Soak 10h in liquid, the weight ratio of walnut shell and phosphoric acid solution is 1:2, filtering；The filter residue being filtrated to get is placed in Muffle furnace
Row activation, activation temperature is 450 DEG C, and the time is 6h, and heating rate controls in 6 DEG C/min, is subsequently cooled to room temperature, activated
Thing；Activator is washed to neutrality, then 110 DEG C of dry 3h, crosses 100 mesh sieves, produce activated carbon, yield is 82%.
Experiment is measured, and specific surface area is 3028m2/ g, total pore volume is 3.12cm3/ g, iodine number is 2156mg/g, methylene blue
It is worth for 695mg/g.
Embodiment 2
Using coconut husk as raw material, 100-300 μm is crushed to after coconut husk is air-dried, is then added in 35wt% phosphoric acid solution
The weight ratio of immersion 12h, coconut husk and phosphoric acid solution is 1:3, filtering；The filter residue being filtrated to get is placed in Muffle furnace and lived
Change, activation temperature is 500 DEG C, the time is 5h, heating rate controls in 7 DEG C/min, is subsequently cooled to room temperature, obtains activator；
Activator is washed to neutrality, then 110 DEG C of dry 4h, crosses 100 mesh sieves, produce activated carbon, yield is 79%.
Experiment is measured, and specific surface area is 3126m2/ g, total pore volume is 2.89cm3/ g, iodine number is 2098mg/g, methylene blue
It is worth for 705mg/g.
Embodiment 3
Using apricot shell as raw material, 100-300 μm is crushed to after apricot shell is air-dried, is then added in 30wt% phosphoric acid solution
The weight ratio of immersion 10h, apricot shell and phosphoric acid solution is 1:4, filtering；The filter residue being filtrated to get is placed in Muffle furnace and lived
Change, activation temperature is 550 DEG C, the time is 4h, heating rate controls in 8 DEG C/min, is subsequently cooled to room temperature, obtains activator；
Activator is washed to neutrality, then 110 DEG C of dry 4h, crosses 100 mesh sieves, produce activated carbon, yield is 71%.
Experiment is measured, and specific surface area is 3210m2/ g, total pore volume is 3.28cm3/ g, iodine number is 2023mg/g, methylene blue
It is worth for 720mg/g.
Claims (5)
1. a kind of preparation method of the activated carbon of high absorption capacity, it is characterised in that comprise the following steps：
(1) using hard fruit shell as raw material, 100-300 μm is crushed to after hard fruit shell is air-dried, is then added in phosphoric acid solution
Soak 8-12h, filtering；
(2) filter residue being filtrated to get is placed in Muffle furnace and activated, be subsequently cooled to room temperature, obtain activator；
(3) activator is washed to neutrality, then dries, sieves, produce；
In step (1), the weight ratio of the hard fruit shell and phosphoric acid solution is 1:2-4；
In step (1), the concentration of the phosphoric acid solution is 30-40wt%.
2. the preparation method of the activated carbon of high absorption capacity as claimed in claim 1, it is characterised in that described in step (2)
Activation temperature is 450-550 DEG C, and the time is 4-6h.
3. the preparation method of the activated carbon of high absorption capacity as claimed in claim 1, it is characterised in that in step (2), activation
During operation, heating rate is controlled in 6~8 DEG C/min.
4. the preparation method of the activated carbon of high absorption capacity as claimed in claim 1, it is characterised in that described in step (2)
Drying temperature is 110-120 DEG C, and the time is 2-4h.
5. the preparation method of the activated carbon of high absorption capacity 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 |
|---|---|---|---|
| CN201710270828.2A CN107128915A (en) | 2017-04-24 | 2017-04-24 | A kind of preparation method of the activated carbon of high absorption capacity |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710270828.2A CN107128915A (en) | 2017-04-24 | 2017-04-24 | A kind of preparation method of the activated carbon of high absorption capacity |
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| CN201710270828.2A Pending CN107128915A (en) | 2017-04-24 | 2017-04-24 | A kind of preparation method of the activated carbon of high absorption capacity |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107973295A (en) * | 2017-12-11 | 2018-05-01 | 广东韩研活性炭科技股份有限公司 | A kind of high-performance removes the preparation method of formaldehyde activity charcoal |
| CN109970058A (en) * | 2019-04-28 | 2019-07-05 | 唐山学院 | A kind of coffee grounds matrix-active charcoal preparation method |
| CN113353931A (en) * | 2021-07-27 | 2021-09-07 | 福建省鑫森炭业股份有限公司 | Preparation method of activated carbon for blood purification perfusion device and activated carbon |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102275911A (en) * | 2011-06-03 | 2011-12-14 | 中国林业科学研究院林产化学工业研究所 | Microporous active carbon and preparation method by chemical agent aperture regulation and control |
| CN102992318A (en) * | 2012-12-17 | 2013-03-27 | 张亮 | Method for preparing walnut shell activated carbon |
| CN103922337A (en) * | 2014-04-15 | 2014-07-16 | 浙江省林业科学研究院 | Method and equipment for preparing activated carbon carrier for storing natural gas from hard husks |
| 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 CN201710270828.2A patent/CN107128915A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102275911A (en) * | 2011-06-03 | 2011-12-14 | 中国林业科学研究院林产化学工业研究所 | Microporous active carbon and preparation method by chemical agent aperture regulation and control |
| CN102992318A (en) * | 2012-12-17 | 2013-03-27 | 张亮 | Method for preparing walnut shell activated carbon |
| CN103922337A (en) * | 2014-04-15 | 2014-07-16 | 浙江省林业科学研究院 | Method and equipment for preparing activated carbon carrier for storing natural gas from hard husks |
| 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 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107973295A (en) * | 2017-12-11 | 2018-05-01 | 广东韩研活性炭科技股份有限公司 | A kind of high-performance removes the preparation method of formaldehyde activity charcoal |
| CN109970058A (en) * | 2019-04-28 | 2019-07-05 | 唐山学院 | A kind of coffee grounds matrix-active charcoal preparation method |
| CN109970058B (en) * | 2019-04-28 | 2022-06-24 | 唐山学院 | Preparation method of coffee grounds matrix activated carbon |
| CN113353931A (en) * | 2021-07-27 | 2021-09-07 | 福建省鑫森炭业股份有限公司 | Preparation method of activated carbon for blood purification perfusion device and activated carbon |
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Application publication date: 20170905 |