CN101117218A - Method for preparing magnetic porous charcoal - Google Patents
Method for preparing magnetic porous charcoal Download PDFInfo
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- CN101117218A CN101117218A CNA2007100623356A CN200710062335A CN101117218A CN 101117218 A CN101117218 A CN 101117218A CN A2007100623356 A CNA2007100623356 A CN A2007100623356A CN 200710062335 A CN200710062335 A CN 200710062335A CN 101117218 A CN101117218 A CN 101117218A
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- porous charcoal
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Abstract
The invention relates to a method for preparing magnetic porous carbon. The steps of the method are as follows: dissoluble cobalt salt is dissolved to prepare the solution with the mass concentration of 0.5-5 percent, the pH value of the solution is regulated to 8-10 by adding ammonia; porous carbon is added into the solution and stirred until absolutely infiltrated, and then keep still about 30-60 hour, the solution with porous carbon is filtrated, washed by the deionized water and then dried at 105 to 120 DEG C for 8 to 12 hours , dried, with the protection of N2, heating treatment at 500 to 900 DEG C is performed for 0.5 to 3 hours, thusmagnetic porous carbon is obtained. The invention has the advantages of simple preparation method, excellent adsorption property, easy regulation and more strong magnetic property.
Description
Technical field
The invention belongs to a kind of preparation method of magnetic porous charcoal, be specifically related to that a kind of absorption property is good, magnetic is strong and the easy preparation method of control, the simple magnetic porous charcoal of preparation method.
Background technology
With the gac is that the porous charcoal of representative is because the pore texture and the stable chemical property of the significant absorption property that itself had, higher specific surface area, prosperity are widely used in chemical industry, environmental protection fields such as catalyzed reaction, bioseparation, cleaner production.Traditional recovery method mainly adopts filtration, because the porous charcoal granularity is little, when being applied to water treatment, Separation and Recovery is difficulty, causes the wasting of resources and secondary pollution easily; In contrast to this, magnetic separation technique have fast, advantage such as cheap, simple.Because of the susceptibility of porous charcoal own is very little, needs to introduce and carry out magnetic resolution after magnetic medium is given porous charcoal magnetic.Adopt mull technique with magnetic substance and porous charcoal adhesion, prepare magnetic porous charcoal,, have the shortcoming that reduces absorption property because binding agent stops up the porous charcoal surface.Patent 90106471.8 (application number) discloses a kind of preparation method of magnetic active carbon, and this method preparation process is more loaded down with trivial details.
Summary of the invention
It is simple to the purpose of this invention is to provide a kind of preparation process, has the preparation method of the magnetic porous charcoal of good adsorption properties.
Preparation method of the present invention comprises the steps:
(1) the cobalt salt dissolving with solubility is made into the solution that mass concentration is 0.5-5%, and adding ammoniacal liquor adjusting pH is 8-10, adds porous charcoal, stirring is soaked into fully until porous charcoal, leaves standstill 30～60hr, filters, use deionized water wash, in 105 ℃～120 ℃ drying 8～12hr;
(2) dry back is at N
2Protection obtains magnetic porous charcoal down behind 500-900 ℃ of thermal treatment 0.5-3hr.
Aforesaid porous carbon material comprises one or more in fibrous, granular porous charcoal, charcoal-aero gel, the carbon nanotube.
Used cobalt salt is Xiao Suangu (Co (NO
3)
2), cobalt chloride (CoCl
2), rose vitriol (CoSO
4), cobalt oxalate (CoC
2O
4), cobaltous acetate (Co (CH
3COO)
2) a kind of or several section.
The present invention has following advantage:
(1) magnetic substance is evenly distributed on the surface of porous charcoal, and this porous charcoal absorption property is good.
(2) preparation method is simple, only needs for two steps can obtain the porous charcoal of high magnetic.
(3) a spot of magnetic substance can give porous charcoal stronger magnetic, and magneticsubstance is many more, and magnetic property is good more.
Embodiments of the invention are as follows:
Embodiment 1
Get 1.1gCo (NO
3)
2, be dissolved in the 200ml deionized water, slowly add ammoniacal liquor, the limit edged stirs, until pH=9.0; Add the 10.0g powdered carbon, be stirred to gac and soak into fully, leave standstill 48hr, filter, use the distilled water repetitive scrubbing, then at 105 ℃ of dry 10hr.Dried gac is at 700 ℃ of thermal treatment 40min, and N2 protects.Gained magnetic active carbon CCl
4Adsorptive value is 1859mg/g, and saturation magnetization is 0.956emu/g.
Embodiment 2
Get CoCl
22.0g charcoal-aero gel 10.0g regulates pH=8.5, leaves standstill 30hr, 105 ℃ of dry 12hr, and other operation is the same, and dried charcoal-aero gel is at 550 ℃ of thermal treatment 2.5hr, and N2 protects.Gained magnetic charcoal-aero gel CCl4 adsorptive value is 789mg/g, and saturation magnetization is 1.298emu/g.
Embodiment 3
Get Co (NO
3)
24.0g, spheric active carbon 4.0g, Powdered Activated Carbon 3.0g, charcoal-aero gel 4.0g regulates pH=9.5, leaves standstill 30hr, 115 ℃ of dry 12hr, other operation is the same, and dried porous charcoal is at 650 ℃ of thermal treatment 1hr, and N2 protects.Gained magnetic porous charcoal CCl4 adsorptive value is 1256mg/g, and saturation magnetization is 1.468emu/g.
Embodiment 4
Get CoSO
43.0g, Co (NO
3)
22.0g, CoCl
21.0g activated carbon fiber 10.0g regulates pH=8.7, leaves standstill 40hr, 120 ℃ of dry 8hr, and other operation is the same, and dried activated carbon fiber is at 500 ℃ of thermal treatment 3hr, and N2 protects.Gained magnetic active carbon fiber CCl4 adsorptive value is 851mg/g, and saturation magnetization is 1.842emu/g.
Embodiment 5
Get CoC
2O
410.0g carbon nanotube 10.0g regulates pH=8.0, leaves standstill 60hr, 105 ℃ of dry 8hr, and other operation is the same, and dried nanometer activation charcoal pipe is at 850 ℃ of thermal treatment 0.5hr, N
2Protection.Gained magnetic Nano activation charcoal pipe CCl
4Adsorptive value is 1297mg/g, and saturation magnetization is 2.185emu/g.
Embodiment 6
Get Co (CH
3COO)
25.0g, Co (NO
3)
25.0g nanometer activated carbon fibre 10.0g regulates pH=9.5, leaves standstill 48hr, 105 ℃ of dry 10hr, and other operation is the same, and dried nanometer activated carbon fibre is at 900 ℃ of thermal treatment 1.5hr, N
2Protection.The CCl of gained magnetic Nano activated carbon fibre
4Adsorptive value is 762mg/g, and saturation magnetization is 2.026emu/g.
Embodiment 7
Get CoCl
22.0g, Co (CH
3COO)
22.0g, Co (NO
3)
22.0g, CoC
2O
42g, activated carbon fiber 5.0g, nanometer activated carbon fibre 5.0g regulates pH=10, leaves standstill 48hr, 120 ℃ of dry 10hr, other operation is the same, and dried porous carbon fiber is at 850 ℃ of thermal treatment 1hr, N
2Protection.The CCl of the magnetic porous carbon fiber of gained
4Adsorptive value is 816mg/g, and saturation magnetization is 1.891emu/g.
Claims (3)
1. the preparation method of a magnetic porous charcoal is characterized in that comprising the steps:
(1) the cobalt salt dissolving with solubility is made into the solution that mass concentration is 0.5-5%, and adding ammoniacal liquor adjusting pH is 8-10, adds porous charcoal, stirring is soaked into fully until porous charcoal, leaves standstill 30～60hr, filters, use deionized water wash, in 105 ℃～120 ℃ drying 8～12hr;
(2) dry back is at N
2Protection obtains magnetic porous charcoal down behind 500-900 ℃ of thermal treatment 0.5-3hr.
2. the preparation method of a kind of magnetic porous charcoal as claimed in claim 1 is characterized in that described porous carbon material is one or more in fibrous, granular porous charcoal, charcoal-aero gel or the carbon nanotube.
3. the preparation method of a kind of magnetic porous charcoal as claimed in claim 1, the cobalt salt that it is characterized in that described solubility is one or more of Xiao Suangu, cobalt chloride, rose vitriol, cobalt oxalate or cobaltous acetate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100623356A CN101117218A (en) | 2007-07-17 | 2007-07-17 | Method for preparing magnetic porous charcoal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100623356A CN101117218A (en) | 2007-07-17 | 2007-07-17 | Method for preparing magnetic porous charcoal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101117218A true CN101117218A (en) | 2008-02-06 |
Family
ID=39053510
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100623356A Pending CN101117218A (en) | 2007-07-17 | 2007-07-17 | Method for preparing magnetic porous charcoal |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106398709A (en) * | 2016-08-29 | 2017-02-15 | 中钢集团鞍山热能研究院有限公司 | Heavy metal immobilization agent and method of removing heavy metals from soil with the same |
| CN106925217A (en) * | 2017-04-08 | 2017-07-07 | 桂林理工大学 | A kind of preparation method of the magnetic porous carbon of peach gum base |
| CN113401889A (en) * | 2021-07-02 | 2021-09-17 | 上海星垣纳米科技有限公司 | Nano carbon material and preparation method thereof |
-
2007
- 2007-07-17 CN CNA2007100623356A patent/CN101117218A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106398709A (en) * | 2016-08-29 | 2017-02-15 | 中钢集团鞍山热能研究院有限公司 | Heavy metal immobilization agent and method of removing heavy metals from soil with the same |
| CN106925217A (en) * | 2017-04-08 | 2017-07-07 | 桂林理工大学 | A kind of preparation method of the magnetic porous carbon of peach gum base |
| CN113401889A (en) * | 2021-07-02 | 2021-09-17 | 上海星垣纳米科技有限公司 | Nano carbon material and preparation method thereof |
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Open date: 20080206 |