CN101974846A - Method for preparing bamboo charcoal-based activated carbon fibers - Google Patents
Method for preparing bamboo charcoal-based activated carbon fibers Download PDFInfo
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- CN101974846A CN101974846A CN2010102970432A CN201010297043A CN101974846A CN 101974846 A CN101974846 A CN 101974846A CN 2010102970432 A CN2010102970432 A CN 2010102970432A CN 201010297043 A CN201010297043 A CN 201010297043A CN 101974846 A CN101974846 A CN 101974846A
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- bamboo charcoal
- activated carbon
- bamboo
- carbon fiber
- carbon fibers
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Abstract
The invention discloses a method for preparing bamboo charcoal-based activated carbon fibers, which comprises the following steps of: impregnating bamboo charcoal fibers serving as raw materials with the dilute solution of sodium hydroxide, performing the impregnation treatment for 24h by using the solution of sodium chloride, phosphoric acid or sulphurous acid with 25 to 45 weight percent of chemical activating agent, performing carbonization activation for 60 to 90m at the temperature of 800 to 1,200 DEG C, and performing temperature reduction, washing and drying to obtain the bamboo charcoal-based activated carbon fibers with the specific surface area of 640 to 1,280m<2>/g and the yield of carbon of 31 to 49 percent.
Description
A kind of preparation method of bamboo charcoal based active carbon fiber belongs to the preparation method of activated carbon fiber, particularly is the method for preparing activated carbon fiber of raw material with the bamboo-carbon fibre.
This method is to be raw material with the bamboo-carbon fibre, and bamboo-carbon fibre be for bamboo charcoal be raw material, bamboo charcoal but is to be that raw material are produced with the mao bamboon that China exists in a large number, only with the basic raw material contrast of mao bamboon with other activated carbon fiber such as cotton, fiber crops, the plantation of mao bamboon, processing all simple relatively, and saving human resources greatly, is rare intensive basic raw material, and this method provides a new direction for the deep processing of mao bamboon; This method also provides a kind of new kind for activated carbon fiber simultaneously.
All kinds of artificial fibers of general many employing coconut husks of activated carbon fiber, native graphite, artificial synthesizing activity charcoal carry out charing once more and obtain, and are that the conventional activated carbon fiber of preparation of raw material is not seen in domestic and international report as yet with the bamboo-carbon fibre.
Be preparation method's the patent of the natural fibre-based active carbon fibre by name of CN1166541 at publication number, in fact only be only limited to the sisal fiber cellulosic material.And be in the application for patent of the by name a kind of polyacrylonitrile radical active carbon fiber of CN1217394 and production method thereof at publication number, the content that obtains the bamboo charcoal based active carbon fiber is produced in the processing that had not also related to bamboo-carbon fibre, do not seen in other all kinds of patents application documents and the publication about make the document of bamboo charcoal based active carbon fiber with bamboo-carbon fibre yet, the application and the patent of wood-based fibre and fiber crops base (flax class) fiber only arranged.In foreign literature, more do not met relevant report, and domestic industry production also only limits to bamboo-carbon fibre, the follow-up bamboo charcoal based active carbon fiber of bamboo-carbon fibre had not only been listened institute, also be not seen in any journal and science report.
The preparation method of activated carbon fiber generally adopts the gas activating agent, after being the treated and charing of raw material, feed oxidizing gas such as water vapour, carbon dioxide, flue gas etc. and at high temperature carry out priming reaction and obtain activated carbon fiber, generally require the temperature of reacting furnace must reach more than 800 ℃.
This method is to be raw material with the bamboo-carbon fibre, is that 5% dilute solution of sodium hydroxide soaks with concentration earlier, again with chemical active agent profit solution soaking 12-24 hour, then at inert gas or/and under the non-oxidized gas protection in 800-1200 ℃ of activation 60-90 minute.
Concrete steps are as follows:
1, bamboo-carbon fibre soaked 24 hours with 5% dilute solution of sodium hydroxide, wash then the dehydrogenation sodium hydroxide solution to raffinate for neutral, the airing bamboo-carbon fibre is to dry;
2, dried bamboo-carbon fibre was soaked 12-24 hour with chemical reagent, make the abundant infiltrated fiber of reagent inside, with the fiber extruding stem, put into activation furnace then;
3, under the protective gas protection, retort is warming up to 800-1200 ℃ of activation 60-90 minute with per minute 5-20 ℃, and then with the protective gas protection down, slowly reduces to room temperature.
4, reacting furnace internal reaction thing is taken out, washing, oven dry promptly obtain the bamboo charcoal based active carbon fiber.
Below be this method specific embodiment:
Embodiment 1-8, employing sodium chloride is activating reagent, and soak time is 24 hours, and 1-4 prepares the bamboo charcoal based active carbon fiber by this method concrete steps, each embodiment preparation condition is listed in table 1, and product yield and table specific area part reach 32-49Wt% and 710-1280m respectively
2/ g.
Table 1 NaCl
2Activation preparation activated carbon fiber
Embodiment 9-16, employing phosphoric acid is activating reagent, and soak time is 24 hours, and 1-4 prepares the bamboo charcoal based active carbon fiber by this method concrete steps, each embodiment preparation condition is listed in table 2, and product yield and table specific area part reach 30-41Wt% and 640-930m/g respectively.
Table 2 H
3PO
4Activation preparation activated carbon fiber
Embodiment 17-24, employing sulfurous acid is activating reagent, and soak time is 24 hours, and 1-4 prepares the bamboo charcoal based active carbon fiber by this method concrete steps, each embodiment preparation condition is listed in table 2, and product yield and table specific area part reach 31-44Wt% and 680-1150m/g respectively.
Table 3 H
2SO
3Activation preparation activated carbon fiber
Claims (4)
1. the preparation method of a bamboo charcoal based active carbon fiber; it is characterized in that with the bamboo-carbon fibre being raw material, after the dilute solution of sodium hydroxide immersion treatment, in chemical reagent solution, soaked 12-24 hour; under the protective gas protection, activate 60-90 minute down then at 800-1200 ℃.
2. method according to claim 1 is characterized in that described protective gas is one or more of nitrogen, helium, neon, argon gas, krypton gas, xenon, radon gas.
3. method according to claim 1 is characterized in that described chemical reagent is a kind of of sodium chloride, phosphoric acid or sulfurous acid.
4. method according to claim 1 is characterized in that its concentration of described chemical reagent is between 25-45Wt%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102970432A CN101974846A (en) | 2010-09-28 | 2010-09-28 | Method for preparing bamboo charcoal-based activated carbon fibers |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010102970432A CN101974846A (en) | 2010-09-28 | 2010-09-28 | Method for preparing bamboo charcoal-based activated carbon fibers |
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| CN101974846A true CN101974846A (en) | 2011-02-16 |
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| CN2010102970432A Pending CN101974846A (en) | 2010-09-28 | 2010-09-28 | Method for preparing bamboo charcoal-based activated carbon fibers |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102430369A (en) * | 2011-09-16 | 2012-05-02 | 浙江大学 | Bamboo charcoal/carbon aerogel composite material and preparation method thereof |
| CN103556254A (en) * | 2013-10-31 | 2014-02-05 | 宜宾海丝特纤维有限责任公司 | Bamboo charcoal, charcoal and shell carbon composite viscose |
| CN104016343A (en) * | 2013-02-28 | 2014-09-03 | 中国科学院理化技术研究所 | Method for preparing high specific surface area micropore bamboo fiber base activated carbon fiber |
| CN108928982A (en) * | 2018-07-12 | 2018-12-04 | 李晓军 | Bioactive water and its production technology with release far infrared function |
-
2010
- 2010-09-28 CN CN2010102970432A patent/CN101974846A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102430369A (en) * | 2011-09-16 | 2012-05-02 | 浙江大学 | Bamboo charcoal/carbon aerogel composite material and preparation method thereof |
| CN102430369B (en) * | 2011-09-16 | 2013-08-14 | 浙江大学 | Bamboo charcoal/carbon aerogel composite material and preparation method thereof |
| CN104016343A (en) * | 2013-02-28 | 2014-09-03 | 中国科学院理化技术研究所 | Method for preparing high specific surface area micropore bamboo fiber base activated carbon fiber |
| CN104016343B (en) * | 2013-02-28 | 2016-12-07 | 中国科学院理化技术研究所 | A kind of preparation method of the bamboo fiber-based NACF of high specific surface micro-pore |
| CN103556254A (en) * | 2013-10-31 | 2014-02-05 | 宜宾海丝特纤维有限责任公司 | Bamboo charcoal, charcoal and shell carbon composite viscose |
| CN103556254B (en) * | 2013-10-31 | 2015-08-19 | 宜宾海丝特纤维有限责任公司 | A kind of bamboo charcoal, charcoal and shell carbon composite viscose |
| CN108928982A (en) * | 2018-07-12 | 2018-12-04 | 李晓军 | Bioactive water and its production technology with release far infrared function |
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Application publication date: 20110216 |