CN103252213B - Active carbon with microporous-mesoporous structure - Google Patents
Active carbon with microporous-mesoporous structure Download PDFInfo
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- CN103252213B CN103252213B CN201310186067.4A CN201310186067A CN103252213B CN 103252213 B CN103252213 B CN 103252213B CN 201310186067 A CN201310186067 A CN 201310186067A CN 103252213 B CN103252213 B CN 103252213B
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- active carbon
- aperture
- specific area
- chinese torreya
- methylene blue
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Abstract
The invention relates to active carbon with a microporous-mesoporous structure. The active carbon with the microporous-mesoporous structure is characterized in that the specific surface area is 2,000 to 3,500 m<2>/g; the aperture is 0.7 to 5 nm; the iodine adsorption value is 1,000 to 1,800 mg/g; the carbon tetrachloride adsorption value is 70 to 130 percent; the strength is more than 95 percent; methylene blue is 200 to 840 percent; and the bulk specific weight is 400 to 550 g/l. The active carbon with the microporous-mesoporous structure has a good adsorption effect. The active carbon has large aperture and high bulk specific weight, namely the average density, comprising air clearance, of materials which are stacked naturally is high, the larger the stacking volume is, the higher the bulk specific weight is, namely the specific surface area is large, in other words, the more the clearance is, the better is effect is.
Description
Technical field
The present invention relates to a kind of active carbon of micropore-central hole structure, belong to technical field of active carbon.
Background technology
Active carbon is a kind of not only ancient but also young functional material.Just eliminate with charcoal the foul odour that ulcer and wound give out as far back as ancient Egypt epoch people.The history of active carbon development shows, the preparation and application of active carbon always with the Progress in industrialization of society and the progress of human civilization closely related.As far back as last century, active carbon just one of main product becoming industrial carbon materials, its application almost relates to all industrial departments.In recent years, along with the rise of environmental protection industry and new high-tech industry, new opportunity is brought to the development of active carbon.The research of active carbon, development and utilization have entered a brand-new stage.At present, the research of regarding charcoal has two main trend, and one is the growing requirement of environmental protection industry (epi), needs raw material sources extensive, cheap novel absorbent charcoal; Two is that the active carbon of requirement manufacture has high-ratio surface sum micropore-mesopore pore size and the structural behaviour of depositing.
Aperture and specific area weigh two standards of Properties of Activated Carbon, the adsorption effect of activated carbon in water that pore diameter range is large, specific area is larger is better, but active carbon is in the market when specific area can meet user's needs, aperture does not increase always, hinder the scope of application of active carbon, therefore, those skilled in the art have developed a kind of specific area and the large active carbon of pore diameter range.
Summary of the invention
For solving the above-mentioned technical problem of prior art, the object of this invention is to provide a kind of micropore-central hole structure active carbon, not only specific area is large for it, and micropore-central hole structure depositing, and meets the requirement of user.
For achieving the above object, the present invention is achieved by the following technical solutions:
An active carbon for micropore-central hole structure, described active carbon possesses following feature:
Specific area 2000-3500 m
2/ g
Aperture 0.7-5nm
Iodine sorption value 1000-1800 mg/g
Penetrating curve 70-130%
Intensity >95%
Methylene blue 200-840%
Bulk density 400-550 g/l.
Described active carbon possesses following feature:
Specific area 2002 m
2/ g
Aperture 3.5-5nm
Iodine sorption value 1026 mg/g
Penetrating curve 75%
Intensity >95%
Methylene blue 308%
Bulk density 406g/l.
Described active carbon possesses following feature:
Specific area 3118 m
2/ g
Aperture 0.7-3.5nm
Iodine sorption value 1623mg/g
Penetrating curve 122%
Intensity >95%
Methylene blue 620%
Bulk density 512g/l.
Described active carbon possesses following feature:
Specific area 3486m
2/ g
Aperture 3-5nm
Iodine sorption value 1780 mg/g
Penetrating curve 128%
Intensity >95%
Methylene blue 738%
Bulk density 535g/l.
Beneficial effect of the present invention is as follows:
Active carbon of the present invention, aperture is 0.7-5nm, belongs to micropore-central hole structure, the advantages of good adsorption effect of active carbon; And active carbon of the present invention bulk density while aperture is large is also large, averag density when namely material is stacked naturally, comprise the air gap very large, stacking volume is larger, and the bulk density of our active carbon is large, and illustrate that specific area is large, space is many, and effect is better.
Accompanying drawing explanation
Fig. 1 is the SEM shape appearance figure of active carbon of the present invention.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is further illustrated, but protection scope of the present invention is not limited to this.
The active carbon of a kind of micropore-central hole structure of the present invention, with Chinese torreya aril for raw materials for production, production technology is as follows: discarded Chinese torreya aril raw material is cleaned by (1), and dries 24h under the environment of 100 DEG C; (2) the Chinese torreya aril raw meal of drying in step (1) being broken to particle diameter is 10-100 order; (3) protection charing 2h made by the Chinese torreya aril raw material nitrogen that will process through step (2) or helium; the flow of gas is 10-50ml/min; carbonization temperature is 350-650 DEG C, and carbonization heating rate is 10-12 DEG C/min, and obtained possess pore passage structure and specific area is 500-1000m
2the active carbon of/g; (4) activate carbonizing the active carbon obtained in step (3) under activator phosphoric acid, activation temperature is 600-795 DEG C, and obtained aperture is 0.7-5nm, and specific area is 2000-3500m
2the active carbon of/g.
embodiment 1
Chinese torreya aril of the present invention prepares the method for active carbon with high specific surface area, comprises the following steps:
(1) discarded Chinese torreya aril raw material is cleaned, and dry 24h under the environment of 100 DEG C;
(2) the Chinese torreya aril raw meal of drying in step (1) being broken to particle diameter is 100 orders;
(3) the Chinese torreya aril raw material nitrogen processed through step (2) is carbonized 2h, carbonization temperature is 500 DEG C, and carbonization heating rate is 11 DEG C/min, and nitrogen flow is 25 ml/min, and obtained possess pore passage structure and specific area is 500-1000m
2the active carbon of/g;
(4) activate carbonizing the active carbon obtained in step (3) under activator phosphoric acid, the mass ratio of phosphoric acid and active carbon to be activated is 3:1, and activation temperature is 795 DEG C, and obtained aperture is 0.7-3.5nm, and specific area is 2000-3500m
2the active carbon of/g, obtained Properties of Activated Carbon is as follows:
| Title | Index |
| Penetrating curve, % | 122 |
| Intensity, % | >95% |
| Iodine sorption value, mg/g | 1623 |
| Methylene blue, % | 620 |
| Bulk density, g/l | 512 |
| Specific surface, m 2/g | 3118 |
| Aperture nm | 0.7-3.5 |
embodiment 2
Chinese torreya aril of the present invention prepares the method for active carbon with high specific surface area, comprises the following steps:
(1) discarded Chinese torreya aril raw material is cleaned, and dry 24h under the environment of 100 DEG C;
(2) the Chinese torreya aril raw meal of drying in step (1) being broken to particle diameter is 80 orders;
(3) the Chinese torreya aril raw material nitrogen protection processed through step (2) is carbonized 2h, carbonization temperature is 350 DEG C, and carbonization heating rate is 12 DEG C/min, and nitrogen flow is 30 ml/min, and obtained possess pore passage structure and specific area is 500-1000m
2the active carbon of/g;
(4) activate carbonizing the active carbon obtained in step (3) under activator phosphoric acid, the mass ratio of phosphoric acid and active carbon to be activated is 5:1, and activation temperature is 600 DEG C, and obtained aperture is 3.5-5nm, and specific area is 2000-3500m
2the active carbon of/g, obtained Properties of Activated Carbon is as follows:
| Title | Index |
| Penetrating curve, % | 75 |
| Intensity, % | >95% |
| Iodine sorption value, mg/g | 1026 |
| Methylene blue, % | 308 |
| Bulk density, g/l | 406 |
| Specific surface, m 2/g | 2002 |
| Aperture nm | 3.5-5 |
embodiment 3
Chinese torreya aril of the present invention prepares the method for active carbon with high specific surface area, comprises the following steps:
(1) discarded Chinese torreya aril raw material is cleaned, and dry 24h under the environment of 100 DEG C;
(2) the Chinese torreya aril raw meal of drying in step (1) being broken to particle diameter is 95 orders;
(3) the Chinese torreya aril raw material nitrogen processed through step (2) is carbonized 2h, carbonization temperature is 450 DEG C, and carbonization heating rate is 10 DEG C/min, and nitrogen flow is 50ml/min, and obtained possess pore passage structure and specific area is 500-1000m
2the active carbon of/g;
(4) activate carbonizing the active carbon obtained in step (3) under activator phosphoric acid, the mass ratio of phosphoric acid and active carbon to be activated is 4:1, and activation temperature is 697.5 DEG C, and obtained aperture is 3-5nm, and specific area is 2000-3500m
2the active carbon of/g, obtained Properties of Activated Carbon is as follows:
| Title | Index |
| Penetrating curve, % | 128 |
| Intensity, % | >95% |
| Iodine sorption value, mg/g | 1780 |
| Methylene blue, % | 738 |
| Bulk density, g/l | 535 |
| Specific surface, m 2/g | 3486 |
| Aperture nm | 3-5 |
Adopt the active carbon of FDAC S-4800 type SEM to preparation to carry out sem analysis, operating voltage is 5.0kV, electric current 10 μ A, operating distance 8 mm.Sample carried out surperficial metal spraying process under vacuo before observing, vacuum 10Pa, metal spraying time 60s.Fig. 1 is the SEM shape appearance figure of active carbon of the present invention.As seen from the figure, active carbon of the present invention presents the arrangement architecture that Disordered Layer is piled up, and there is obvious network type aperture structure on surface, and pore-size distribution is relatively concentrated.The material of activation process to some extent in destruction of plants cell membrane gap, and then form the high spongy macrostructure of openness.
Above-described embodiment only illustrates inventive concept of the present invention for explaining, but not the restriction to rights protection of the present invention, all changes utilizing this design the present invention to be carried out to unsubstantiality, all should fall into protection scope of the present invention.
Claims (4)
1. an active carbon for micropore-central hole structure, is characterized in that described active carbon possesses following feature:
Specific area 2000-3500 m
2/ g
Aperture 0.7-5nm
Iodine sorption value 1000-1800 mg/g
Penetrating curve 70-130%
Intensity >95%
Methylene blue 200-840%
Bulk density 400-550 g/l;
Described micropore-central hole structure active carbon, with Chinese torreya aril for raw materials for production, production technology is as follows: discarded Chinese torreya aril raw material is cleaned by (1), and dries 24h under the environment of 100 DEG C; (2) the Chinese torreya aril raw meal of drying in step (1) being broken to particle diameter is 10-100 order; (3) protection charing 2h made by the Chinese torreya aril raw material nitrogen that will process through step (2) or helium; the flow of gas is 10-50ml/min; carbonization temperature is 350-650 DEG C, and carbonization heating rate is 10-12 DEG C/min, and obtained possess pore passage structure and specific area is 500-1000m
2the active carbon of/g; (4) activate carbonizing the active carbon obtained in step (3) under activator phosphoric acid, activation temperature is 600-795 DEG C, and obtained aperture is 0.7-5nm, and specific area is 2000-3500m
2the active carbon of/g.
2. active carbon as claimed in claim 1, is characterized in that described active carbon possesses following feature:
Specific area 2002 m
2/ g
Aperture 3.5-5nm
Iodine sorption value 1026 mg/g
Penetrating curve 75%
Intensity >95%
Methylene blue 308%
Bulk density 406g/l.
3. active carbon as claimed in claim 1, is characterized in that described active carbon possesses following feature:
Specific area 3118 m
2/ g
Aperture 0.7-3.5nm
Iodine sorption value 1623 mg/g
Penetrating curve 122%
Intensity >95%
Methylene blue 620%
Bulk density 512g/l.
4. active carbon as claimed in claim 1, is characterized in that described active carbon possesses following feature:
Specific area 3486m
2/ g
Aperture 3-5nm
Iodine sorption value 1780 mg/g
Penetrating curve 128%
Intensity >95%
Methylene blue 738%
Bulk density 535g/l.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310186067.4A CN103252213B (en) | 2013-05-20 | 2013-05-20 | Active carbon with microporous-mesoporous structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310186067.4A CN103252213B (en) | 2013-05-20 | 2013-05-20 | Active carbon with microporous-mesoporous structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103252213A CN103252213A (en) | 2013-08-21 |
| CN103252213B true CN103252213B (en) | 2015-02-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310186067.4A Expired - Fee Related CN103252213B (en) | 2013-05-20 | 2013-05-20 | Active carbon with microporous-mesoporous structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112121760B (en) * | 2020-08-21 | 2023-02-10 | 浙江农林大学 | Preparation method of indoor landscape model building material |
| CN117228671B (en) * | 2023-11-16 | 2024-04-05 | 成都达奇科技股份有限公司 | Preparation method of activated carbon with high carbon tetrachloride adsorption rate and activated carbon |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4696742A (en) * | 1983-12-22 | 1987-09-29 | Toho Beslon Co., Ltd. | Active carbon fibers and filter adsorption unit for water purification comprising said fibers |
| CN101428794A (en) * | 2008-12-01 | 2009-05-13 | 海南大学 | Preparation of coir fiber based activated carbon with high specific surface area |
| CN102674346A (en) * | 2012-06-04 | 2012-09-19 | 新疆大学 | Process for preparing high-specific surface area composite pore structure coal-based activated carbon by using low dosage of KOH |
-
2013
- 2013-05-20 CN CN201310186067.4A patent/CN103252213B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4696742A (en) * | 1983-12-22 | 1987-09-29 | Toho Beslon Co., Ltd. | Active carbon fibers and filter adsorption unit for water purification comprising said fibers |
| CN101428794A (en) * | 2008-12-01 | 2009-05-13 | 海南大学 | Preparation of coir fiber based activated carbon with high specific surface area |
| CN102674346A (en) * | 2012-06-04 | 2012-09-19 | 新疆大学 | Process for preparing high-specific surface area composite pore structure coal-based activated carbon by using low dosage of KOH |
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| CN103252213A (en) | 2013-08-21 |
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