CN103252213A - Active carbon with microporous-mesoporous structure - Google Patents
Active carbon with microporous-mesoporous structure Download PDFInfo
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- CN103252213A CN103252213A CN2013101860674A CN201310186067A CN103252213A CN 103252213 A CN103252213 A CN 103252213A CN 2013101860674 A CN2013101860674 A CN 2013101860674A CN 201310186067 A CN201310186067 A CN 201310186067A CN 103252213 A CN103252213 A CN 103252213A
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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 the activated carbon technology field.
Background technology
Active carbon is a kind of not only ancient but also young functional material.Just eliminate the foul odour that ulcer and wound give out with charcoal as far back as the epoch people of ancient Egypt.The history of active carbon development shows that the preparation and application of active carbon are closely related with industrialization progress and the human civilization advance of society always.As far back as last century, active carbon has just become one of main product of industrial carbon materials, and its application almost relates to all industrial departments.In recent years, along with the rise of environmental protection industry and new high-tech industry, brought new opportunity for the development of active carbon.The research of active carbon, development and utilization have entered a brand-new stage.At present, the research of relevant active carbon has two main trend, and the one, the requirement that environmental protection industry (epi) is growing needs raw material sources extensive, cheap novel absorbent charcoal; The 2nd, the structural behaviour that the active carbon of requirement manufacturing has high-specific surface area and micropore-mesopore aperture and deposits.
Aperture and specific area are to weigh two standards of Properties of Activated Carbon, the charcoal absorption effect that pore diameter range is big, specific area is more big is more good, when but active carbon in the market can satisfy user's needs in specific area, the aperture does not increase always, hindered the scope of application of active carbon, therefore, those skilled in the art have researched and developed a kind of specific area and the big active carbon of pore diameter range.
Summary of the invention
Be to solve the above-mentioned technical problem of prior art, the purpose of this invention is to provide a kind of micropore-central hole structure active carbon, not only specific area is big for it, and micropore-central hole structure and depositing, and has satisfied user's requirement.
For achieving the above object, the present invention is achieved by the following technical solutions:
A kind of active carbon of 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
Carbon tetrachloride adsorptive value 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
Carbon tetrachloride adsorptive value 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
Carbon tetrachloride adsorptive value 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
Carbon tetrachloride adsorptive value 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, the 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 when the aperture is big is also big, and the averag density when namely material is stacked naturally comprises that the air gap is very big, and stacking volume is more big, and the bulk density of our active carbon is big, illustrates that specific area is big, and the space is many, and effect is just more good.
Description of drawings
Fig. 1 is the SEM shape appearance figure of active carbon of the present invention.
The specific embodiment
The present invention is further illustrated below in conjunction with specific embodiment, 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 is raw materials for production with the Chinese torreya aril, and production technology is as follows: (1) cleans discarded Chinese torreya aril raw material, and dries by the fire 24h under 100 ℃ environment; (2) the Chinese torreya aril raw meal of oven dry in the step (1) being broken to particle diameter is the 10-100 order; (3) will make protection charing 2h with nitrogen or helium through the Chinese torreya aril raw material that step (2) is handled; the flow of gas is 10-50ml/min; carbonization temperature is 350-650 ℃, and carbonization heating rate is 10-12 ℃/min, makes to possess pore passage structure and specific area is 500-1000m
2The active carbon of/g; (4) active carbon that charing in the step (3) is obtained activates under activator phosphoric acid, and activation temperature is 600-795 ℃, and making the 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, may further comprise the steps:
(1) discarded Chinese torreya aril raw material is cleaned, and under 100 ℃ environment, dried by the fire 24h;
(2) the Chinese torreya aril raw meal of oven dry in the step (1) being broken to particle diameter is 100 orders;
(3) the Chinese torreya aril raw material that will handle through step (2) is with nitrogen charing 2h, and carbonization temperature is 500 ℃, and carbonization heating rate is 11 ℃/min, and nitrogen flow is 25 ml/min, makes to possess pore passage structure and specific area is 500-1000m
2The active carbon of/g;
(4) active carbon that charing in the step (3) is obtained activates under activator phosphoric acid, and the mass ratio of phosphoric acid and active carbon to be activated is 3:1, and activation temperature is 795 ℃, and making the aperture is 0.7-3.5nm, and specific area is 2000-3500m
2The active carbon of/g, the Properties of Activated Carbon that makes is as follows:
| Title | Index |
| The carbon tetrachloride adsorptive value, % | 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, may further comprise the steps:
(1) discarded Chinese torreya aril raw material is cleaned, and under 100 ℃ environment, dried by the fire 24h;
(2) the Chinese torreya aril raw meal of oven dry in the step (1) being broken to particle diameter is 80 orders;
(3) the Chinese torreya aril raw material that will handle through step (2) is with nitrogen protection charing 2h, and carbonization temperature is 350 ℃, and carbonization heating rate is 12 ℃/min, and nitrogen flow is 30 ml/min, makes to possess pore passage structure and specific area is 500-1000m
2The active carbon of/g;
(4) active carbon that charing in the step (3) is obtained activates under activator phosphoric acid, and the mass ratio of phosphoric acid and active carbon to be activated is 5:1, and activation temperature is 600 ℃, and making the aperture is 3.5-5nm, and specific area is 2000-3500m
2The active carbon of/g, the Properties of Activated Carbon that makes is as follows:
| Title | Index |
| The carbon tetrachloride adsorptive value, % | 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, may further comprise the steps:
(1) discarded Chinese torreya aril raw material is cleaned, and under 100 ℃ environment, dried by the fire 24h;
(2) the Chinese torreya aril raw meal of oven dry in the step (1) being broken to particle diameter is 95 orders;
(3) the Chinese torreya aril raw material that will handle through step (2) is with nitrogen charing 2h, and carbonization temperature is 450 ℃, and carbonization heating rate is 10 ℃/min, and nitrogen flow is 50ml/min, makes to possess pore passage structure and specific area is 500-1000m
2The active carbon of/g;
(4) active carbon that charing in the step (3) is obtained activates under activator phosphoric acid, and the mass ratio of phosphoric acid and active carbon to be activated is 4:1, and activation temperature is 697.5 ℃, and making the aperture is 3-5nm, and specific area is 2000-3500m
2The active carbon of/g, the Properties of Activated Carbon that makes is as follows:
| Title | Index |
| The carbon tetrachloride adsorptive value, % | 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 FDAC S-4800 type SEM that the active carbon for preparing is carried out sem analysis, operating voltage is 5.0kV, electric current 10 μ A, operating distance 8 mm.Sample carried out surperficial metal spraying and handles vacuum 10Pa, metal spraying time 60s under vacuum before observing.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 unordered stratiform is piled up, and there is tangible network type aperture structure on the surface, and pore-size distribution is more concentrated relatively.Activation process is the material in the destruction of plants cell membrane gap to some extent, and then forms the high spongy macrostructure of openness.
Above-described embodiment only is used for explaining inventive concept of the present invention, but not to the restriction of rights protection of the present invention, allly utilizes this design that the present invention is carried out the change of unsubstantiality, all should fall into protection scope of the present invention.
Claims (4)
1. the active carbon of a 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
Carbon tetrachloride adsorptive value 70-130%
Intensity〉95%
Methylene blue 200-840%
Bulk density 400-550 g/l.
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
Carbon tetrachloride adsorptive value 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
Carbon tetrachloride adsorptive value 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
Carbon tetrachloride adsorptive value 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 true CN103252213A (en) | 2013-08-21 |
| CN103252213B 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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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112121760A (en) * | 2020-08-21 | 2020-12-25 | 浙江农林大学 | Preparation method of indoor landscape model building material |
| CN117228671A (en) * | 2023-11-16 | 2023-12-15 | 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 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112121760A (en) * | 2020-08-21 | 2020-12-25 | 浙江农林大学 | Preparation method of indoor landscape model building material |
| CN112121760B (en) * | 2020-08-21 | 2023-02-10 | 浙江农林大学 | Preparation method of indoor landscape model building material |
| CN117228671A (en) * | 2023-11-16 | 2023-12-15 | 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 |
| 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 |
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|---|---|
| CN103252213B (en) | 2015-02-18 |
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