CN109081341A - A kind of preparation method of mesoporous activated carbon - Google Patents
A kind of preparation method of mesoporous activated carbon Download PDFInfo
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- CN109081341A CN109081341A CN201811159553.6A CN201811159553A CN109081341A CN 109081341 A CN109081341 A CN 109081341A CN 201811159553 A CN201811159553 A CN 201811159553A CN 109081341 A CN109081341 A CN 109081341A
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- activated carbon
- preparation
- mesoporous activated
- abrasive
- treated
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/30—Active carbon
- C01B32/312—Preparation
- C01B32/318—Preparation characterised by the starting materials
- C01B32/324—Preparation characterised by the starting materials from waste materials, e.g. tyres or spent sulfite pulp liquor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
Abstract
The invention discloses a kind of preparation methods of mesoporous activated carbon, first active carbon precursor is cleaned after cleaning and drying and is ground, obtain abrasive, then abrasive is put into pretreatment liquid and is handled, the material that obtains that treated, then will treated that material is mixed with zeolite, calcium carbonate and superfine silica gel powder, then it is carbonized in retort, obtain crude product, finally by crude product after pickling and washing filtering drying, obtain mesoporous activated carbon.The mesoporous activated carbon that method provided by the invention obtains can reach uniform pore diameter range, while specific surface area with higher, can be good at playing absorption property.
Description
Technical field
The invention belongs to active carbon preparation fields, and in particular to a kind of preparation method of mesoporous activated carbon.
Background technique
Active carbon is also known as activated carbon black.It is black powder or bulk, graininess, cellular amorphous carbon, also there is row
Arrange regular crystal carbon.In active carbon in addition to carbon, also include two class admixtures: one kind is chemically combined element, mainly
Oxygen and hydrogen, these elements be due to not completely charing and remain in charcoal, or in activation process, external non-carbon element
In conjunction with Surface Chemistry of Activated Carbon, when such as using steam activation, activated carbon surface is oxidized or steam oxidation；Another kind of blending
Object is ash content, it is the inorganic part of active carbon；Ash content easily causes secondary pollution in activated carbon.The primary raw material of active carbon is several
It can be all organic materials rich in carbon, such as coal, timber, shell, coconut husk, walnut shell, apricot shell, jujube shell.These are carbon containing
Material is converted into active carbon by pyrolysis under high temperature and certain pressure in activation furnace.Active carbon is because it is with good
It good absorption property and then is widely used, and currently used active carbon is since pore size homogeneity is poor, for
For the substance of specific needs absorption, good pore homogeneity is needed to can be only achieved significant adsorption effect, therefore how to mention
Rise one of the hot spot that activated carbon pore size homogeneity is always technical staff's research.
Summary of the invention
It is an object of the invention to provide a kind of preparation of mesoporous activated carbon to overcome the above the deficiencies in the prior art
Method improves active carbon specific surface area, reaches uniform pore size distribution range.
Technical scheme is as follows:
A kind of preparation method of mesoporous activated carbon, which is characterized in that including following preparation step:
Active carbon precursor is cleaned after cleaning and drying and is ground, obtains abrasive by step 1；
Abrasive is put into pretreatment liquid and handles by step 2, the material that obtains that treated；
Step 3, by treated, material is mixed with zeolite, calcium carbonate and superfine silica gel powder, is then carbonized in retort,
Obtain crude product；
Step 4, by crude product after pickling and washing filtering drying, obtain mesoporous activated carbon.
The preparation method of the mesoporous activated carbon, active carbon precursor described in step 1 include crop material, sawdust,
Any one or a few in coconut husk or shell.
The preparation method of the mesoporous activated carbon, the cleaning of active carbon precursor is cleans by deionized water in step 1.
The preparation method of the mesoporous activated carbon, the partial size of abrasive is 2mm or less in step 1.
The preparation method of the mesoporous activated carbon, in step 2 pretreatment liquid be by the component mixing of following parts by weight and
At: 5-10 parts of ethylene glycol, 2-4 parts of maleic anhydride.
The preparation method of the mesoporous activated carbon, treatment process is to immerse abrasive in treatment fluid in step 2, is risen
Temperature stirs 50-60 minutes to 40 DEG C.
The preparation method of the mesoporous activated carbon, treated in step 3 material and zeolite, calcium carbonate and micro mist silicon
The mass ratio of glue is 8-10:2-3:0.6-2:0.5-1.
The preparation method of the mesoporous activated carbon, carbonization temperature is 700-800 DEG C in step 3, and carbonization time 3-4 is small
When.
The preparation method of the mesoporous activated carbon, pickling is to be cleaned using aqueous hydrochloric acid solution in step 4.
The mesoporous activated carbon that method provided by the invention is prepared has uniform aperture, while having excellent ratio table
Area can be good at playing suction-operated.
Specific embodiment
Embodiment 1
A kind of preparation method of mesoporous activated carbon, which is characterized in that including following preparation step:
Active carbon precursor crop material is passed through deionized water cleaning removal of impurities and ground after drying, the partial size of abrasive by step 1
For 2mm hereinafter, obtaining abrasive；
Abrasive is put into pretreatment liquid and handles by step 2, the material that obtains that treated；Pretreatment liquid is by following heavy
The component of amount part mixes: 5 parts of ethylene glycol, 2 parts of maleic anhydride, and treatment process is to immerse abrasive in treatment fluid,
40 DEG C are warming up to, is stirred 50 minutes；
Step 3, will treated that material is mixed with zeolite, calcium carbonate and superfine silica gel powder, treated material and zeolite, carbonic acid
The mass ratio of calcium and superfine silica gel powder is 8:2:0.6:0.5, is then carbonized in retort, and carbonization temperature is 700 DEG C, charing
Time 3 hours, obtain crude product；
Step 4, by crude product after pickling and washing filtering drying, obtain mesoporous activated carbon.
Embodiment 2
A kind of preparation method of mesoporous activated carbon, which is characterized in that including following preparation step:
Active carbon precursor coconut husk is passed through deionized water cleaning removal of impurities and ground after drying by step 1, and the partial size of abrasive is 2mm
Hereinafter, obtaining abrasive；
Abrasive is put into pretreatment liquid and handles by step 2, the material that obtains that treated；Pretreatment liquid is by following heavy
The component of amount part mixes: 7 parts of ethylene glycol, 3 parts of maleic anhydride, and treatment process is to immerse abrasive in treatment fluid,
40 DEG C are warming up to, is stirred 55 minutes；
Step 3, will treated that material is mixed with zeolite, calcium carbonate and superfine silica gel powder, treated material and zeolite, carbonic acid
The mass ratio of calcium and superfine silica gel powder is 9:2:0.7:0.6, is then carbonized in retort, and carbonization temperature is 730 DEG C, charing
Time 3 hours, obtain crude product；
Step 4, by crude product after pickling and washing filtering drying, obtain mesoporous activated carbon.
Embodiment 3
A kind of preparation method of mesoporous activated carbon, which is characterized in that including following preparation step:
Active carbon precursor shell is passed through deionized water cleaning removal of impurities and ground after drying by step 1, and the partial size of abrasive is 2mm
Hereinafter, obtaining abrasive；
Abrasive is put into pretreatment liquid and handles by step 2, the material that obtains that treated；Pretreatment liquid is by following heavy
The component of amount part mixes: 8 parts of ethylene glycol, 3 parts of maleic anhydride, and treatment process is to immerse abrasive in treatment fluid,
40 DEG C are warming up to, is stirred 58 minutes；
Step 3, will treated that material is mixed with zeolite, calcium carbonate and superfine silica gel powder, treated material and zeolite, carbonic acid
The mass ratio of calcium and superfine silica gel powder is 10:2.6:1.5:0.8, is then carbonized in retort, and carbonization temperature is 780 DEG C,
Carbonization time 4 hours, obtain crude product；
Step 4, by crude product after aqueous hydrochloric acid solution pickling and washing filtering drying, obtain mesoporous activated carbon.
Embodiment 4
A kind of preparation method of mesoporous activated carbon, which is characterized in that including following preparation step:
Active carbon precursor crop material is passed through deionized water cleaning removal of impurities and ground after drying, the partial size of abrasive by step 1
For 2mm hereinafter, obtaining abrasive；
Abrasive is put into pretreatment liquid and handles by step 2, the material that obtains that treated；Pretreatment liquid is by following heavy
The component of amount part mixes: 10 parts of ethylene glycol, 4 parts of maleic anhydride, and treatment process is to immerse abrasive in treatment fluid,
40 DEG C are warming up to, is stirred 60 minutes；
Step 3, will treated that material is mixed with zeolite, calcium carbonate and superfine silica gel powder, treated material and zeolite, carbonic acid
The mass ratio of calcium and superfine silica gel powder is 10:3:2:1, is then carbonized in retort, and carbonization temperature is 800 DEG C, charing
Time 4 hours, obtain crude product；
Step 4, by crude product after aqueous hydrochloric acid solution pickling and washing filtering drying, obtain mesoporous activated carbon.
The mesoporous activated carbon that above embodiments are prepared is tested for the property, as a result as follows:
As can be seen from the above results, the active carbon that the preparation method of mesoporous activated carbon provided by the invention is prepared has good
Good pore-size distribution, while specific surface area with higher.
Claims (9)
1. a kind of preparation method of mesoporous activated carbon, which is characterized in that including following preparation step:
Active carbon precursor is cleaned after cleaning and drying and is ground, obtains abrasive by step 1；
Abrasive is put into pretreatment liquid and handles by step 2, the material that obtains that treated；
Step 3, by treated, material is mixed with zeolite, calcium carbonate and superfine silica gel powder, is then carbonized in retort,
Obtain crude product；
Step 4, by crude product after pickling and washing filtering drying, obtain mesoporous activated carbon.
2. the preparation method of mesoporous activated carbon according to claim 1, which is characterized in that active carbon described in step 1
Precursor includes any one or a few in crop material, sawdust, coconut husk or shell.
3. the preparation method of mesoporous activated carbon according to claim 1, which is characterized in that active carbon precursor is clear in step 1
It washes to be cleaned by deionized water.
4. the preparation method of mesoporous activated carbon according to claim 1, which is characterized in that the partial size of abrasive in step 1
For 2mm or less.
5. the preparation method of mesoporous activated carbon according to claim 1, which is characterized in that pretreatment liquid is served as reasons in step 2
The component of following parts by weight mixes: 5-10 parts of ethylene glycol, 2-4 parts of maleic anhydride.
6. the preparation method of mesoporous activated carbon according to claim 1, which is characterized in that treatment process is to incite somebody to action in step 2
Abrasive immerses in treatment fluid, is warming up to 40 DEG C, stirs 50-60 minutes.
7. the preparation method of mesoporous activated carbon according to claim 1, which is characterized in that treated in step 3 material
Mass ratio with zeolite, calcium carbonate and superfine silica gel powder is 8-10:2-3:0.6-2:0.5-1.
8. the preparation method of mesoporous activated carbon according to claim 1, which is characterized in that carbonization temperature is in step 3
700-800 DEG C, carbonization time 3-4 hours.
9. the preparation method of mesoporous activated carbon according to claim 1, which is characterized in that pickling is using salt in step 4
Aqueous acid is cleaned.
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Citations (6)
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|---|---|---|---|---|
| CN103691408A (en) * | 2013-12-27 | 2014-04-02 | 武汉工程大学 | Succinic anhydride modified wild reed stem adsorbent as well as preparation and application thereof |
| CN103833412A (en) * | 2014-03-03 | 2014-06-04 | 芜湖市宝艺游乐科技设备有限公司 | Ceramic filter element added with silver iodide and provided with antibacterial effect and preparation method of ceramic filter element |
| CN105056894A (en) * | 2015-08-11 | 2015-11-18 | 常州大学 | Novel adsorbent |
| CN105197927A (en) * | 2015-09-30 | 2015-12-30 | 江苏通瑞环保科技发展有限公司 | Preparation method of mesoporous activated carbon |
| CN106986337A (en) * | 2016-12-23 | 2017-07-28 | 镇江华域环保设备制造有限公司 | A kind of preparation method of air cleaning porous activated carbon |
| CN108543512A (en) * | 2018-04-27 | 2018-09-18 | 和县伊迈炭业有限责任公司 | The charcoal pretreating process of bio-filter stuffing is prepared using charcoal powder |
-
2018
- 2018-09-30 CN CN201811159553.6A patent/CN109081341A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103691408A (en) * | 2013-12-27 | 2014-04-02 | 武汉工程大学 | Succinic anhydride modified wild reed stem adsorbent as well as preparation and application thereof |
| CN103833412A (en) * | 2014-03-03 | 2014-06-04 | 芜湖市宝艺游乐科技设备有限公司 | Ceramic filter element added with silver iodide and provided with antibacterial effect and preparation method of ceramic filter element |
| CN105056894A (en) * | 2015-08-11 | 2015-11-18 | 常州大学 | Novel adsorbent |
| CN105197927A (en) * | 2015-09-30 | 2015-12-30 | 江苏通瑞环保科技发展有限公司 | Preparation method of mesoporous activated carbon |
| CN106986337A (en) * | 2016-12-23 | 2017-07-28 | 镇江华域环保设备制造有限公司 | A kind of preparation method of air cleaning porous activated carbon |
| CN108543512A (en) * | 2018-04-27 | 2018-09-18 | 和县伊迈炭业有限责任公司 | The charcoal pretreating process of bio-filter stuffing is prepared using charcoal powder |
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| 王永刚: "《煤化工工艺学》", 30 September 2014, 中国矿业大学出版社 * |
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