CN1203887A - Preparation of superhigh specific surface area active carbon - Google Patents
Preparation of superhigh specific surface area active carbon Download PDFInfo
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- CN1203887A CN1203887A CN 98114553 CN98114553A CN1203887A CN 1203887 A CN1203887 A CN 1203887A CN 98114553 CN98114553 CN 98114553 CN 98114553 A CN98114553 A CN 98114553A CN 1203887 A CN1203887 A CN 1203887A
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- China
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- surface area
- specific surface
- active carbon
- preparation
- rice husk
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Abstract
The present invention relates to a preparation method of active carbon with superhigh specific surface area. Said invention uses rice husk as raw material, and the active carbon prepared by adopting said invented method possesses large specific surface area, good cellular structure, narrow pore size distribution and strong adsorptivity, can be used as electrode material, adsorption material, catalyst and catalyst carrier. Said invention features rich raw material source, low cost, simple preparation process, safety and high efficiency, etc..
Description
The present invention is a kind of preparation method of activated carbon with high specific surface area.
Gac is as a kind of carbon materials, and purposes is wide, demand is big, and the gac industrial development is very fast.Traditional gac is raw material generally with coal, timber, prepares through gas activation or chemical activation.Gas activation mainly is with carbonic acid gas or steam activation; Chemical activation is with ZnCl
2, H
3PO
4Deng being main, but specific surface area has only 1000m
2About/g, and pore distribution is wide, is made up of micropore, mesopore, macropore three parts, can't reach that pore distribution is narrow, specific surface area is big, the requirement of high adsorption capacity.Therefore, in recent years, the development of active carbon with high specific surface area just became the focus that the various countries scientific worker studies with exploitation.Active carbon with high specific surface area can improve electrical capacity as capacitance electrode material, utilize its high absorption property can improve the active adsorption amount of material, add the characteristics that pore distribution is narrow, can improve gas delivery ability and sewage purification ability, as catalyzer or support of the catalyst, can improve selectivity and productive rate.The research in this field, the U.S., Japan maintain the leading position, the U.S. has just proposed the general method for making of active carbon with high specific surface area in 1978, Japan has also reported the achievement in research of this respect in succession, and these achievements have played very big promoter action to Application of Brand Active Carbon and research.
There has been significant progress in China, but apart from developed country very big gap has been arranged in the development and exploitation of active carbon with high specific surface area.It is that raw material activates and prepares that external achievement in research is to use the high materials of carbon content such as coal tar, refinery coke, and with the report of other raw material (as plant base) seldom.The present invention utilizes cheap rice husk as raw material, produces activated carbon with high specific surface area.China's rice husk aboundresources, but it utilizes degree very low, there were some to produce the report of silicon-dioxide, silicon tetrachloride and silicon nitride by rice husk in the early 1990s, be to utilize the high characteristics of silicone content in the rice husk, the report for preparing common gac with rice husk was also arranged, China nineteen ninety-five patent CN1 has illustrated in 110,957 and has used rice husk to get process of active carbon as raw material by the gas activation legal system.How to utilize rice husk to prepare active carbon with high specific surface area and just become content of the present invention.
The gac that the present invention makes has that specific surface area is big, microvoid structure is flourishing, pore size distribution is narrow, the characteristics of high adsorption capacity, be extraordinary electrode materials, sorbing material, catalyzer and support of the catalyst, and characteristics such as it is inexpensive abundant to have a raw material, and technology is simple, safe, efficient.
The present invention carries out carbonization with rice husk, and carbonization temperature is 400 ℃～600 ℃, and carbonization time 3～5 hours can obtain the rice husk carbide and promptly activate required raw material.The used activator of the present invention is an alkaline matter, for example: KOH, NaOH, K
2CO
3, Na
2CO
3Deng, wherein be best with KOH.Is rice husk carbide and activator 1: 2～5 to mix by weight, elder generation's pre-treatment, treatment temp is 300 ℃～500 ℃, treatment time is 20～60 minutes, is warmed up to 700 ℃～850 ℃ and activates, and activates 30～120 minutes postcooling, grind, be soaked in water and be washed to neutrality, drying obtains specific surface area 2500m
2/ g～3500m
2The product of/g.
Embodiment 1
Rice husk carbide 1 part (weight) is mixed with 3 parts of KOH, and processing is after 30 minutes down at 400 ℃, and intensification activates 1 hour down at 750 ℃, cooling, and grinding, soaking and water washing is extremely neutral, drying, can make specific surface area is 2850m
2The product of/g.
Embodiment 2
Condition just changes 3 parts of KOH into NaOH with embodiment 1, and making specific surface area is 2700m
2The product of/g.
Embodiment 3
Condition adds 4 parts of KOH with embodiment 1, and making specific surface area is 3100m
2The product of/g.
Embodiment 4
Condition is with embodiment 3, and activation temperature activates 1 hour down at 800 ℃, and making specific surface area is 3300m
2The product of/g.
Claims (4)
1. the present invention relates to a kind of preparation method of active carbon with superhigh specific surface area, it is characterized in that with the rice husk being raw material, mix by 1: 2～5 (weight) with the alkaline activation agent with the rice husk carbide, intensification activates after carrying out pre-treatment, cooling is ground, and is soaked in water, and being washed to neutrality, it is 2500m that drying just can obtain specific surface area
2/ g～3500m
2The product of/g.
2. as the preparation method of right 1 described active carbon with superhigh specific surface area, it is characterized in that alkaline matter is KOH, NaOH, K
2CO
3, Na
2CO
3, wherein be best with KOH.
3. as the preparation method of right 1,2 described active carbon with superhigh specific surface area, it is characterized in that pretreatment temperature is 300 ℃～500 ℃, the time is 20～60 minutes.
4. as the preparation method of right 1,2,3 described active carbon with superhigh specific surface area, it is characterized in that activating treatment temperature is 700 ℃～850 ℃, the time is 30～120 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98114553A CN1057065C (en) | 1998-06-12 | 1998-06-12 | Preparation of superhigh specific surface area active carbon |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98114553A CN1057065C (en) | 1998-06-12 | 1998-06-12 | Preparation of superhigh specific surface area active carbon |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1203887A true CN1203887A (en) | 1999-01-06 |
| CN1057065C CN1057065C (en) | 2000-10-04 |
Family
ID=5224195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN98114553A Expired - Fee Related CN1057065C (en) | 1998-06-12 | 1998-06-12 | Preparation of superhigh specific surface area active carbon |
Country Status (1)
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|---|---|
| CN (1) | CN1057065C (en) |
Cited By (18)
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|---|---|---|---|---|
| CN100354201C (en) * | 2005-12-02 | 2007-12-12 | 张海军 | Natural gas adsorpting super active carbon and its producing process and activation furnace |
| CN100503435C (en) * | 2003-05-16 | 2009-06-24 | 中国人民解放军军事医学科学院毒物药物研究所 | Nano level active carbon and its preparation and use |
| CN101804988A (en) * | 2010-05-05 | 2010-08-18 | 吉林大学 | Novel method for preparing silicon dioxide and active carbon from rice hull ash |
| CN101891189A (en) * | 2010-08-13 | 2010-11-24 | 宁乡县亮之星米业有限公司 | Method for preparing coal gas, top-grade active carbon, water glass and silicate phosphate from rice hulls |
| CN102247802A (en) * | 2011-04-27 | 2011-11-23 | 中南大学 | Method for preparing activated carbon |
| CN101670278B (en) * | 2009-09-22 | 2012-01-18 | 江汉大学 | Method for preparing desulfurization absorbent by using rice husk ash |
| CN102862983A (en) * | 2012-09-26 | 2013-01-09 | 中国科学院山西煤炭化学研究所 | Preparation method of spherical active carbon for capturing CO2 |
| CN102897746A (en) * | 2012-09-25 | 2013-01-30 | 珠海市吉林大学无机合成与制备化学重点实验室 | Porous carbon material and method for preparing same |
| CN103224236A (en) * | 2013-05-20 | 2013-07-31 | 山东沂蒙山花生油股份有限公司 | Peanut shell activated carbon for removing toxins in peanut oil and preparation method thereof |
| CN103408009A (en) * | 2013-04-27 | 2013-11-27 | 吉林大学 | Preparation method for coproduction of high-specific-capacitance active carbon and nano silicon dioxide from rice hull |
| CN104258889A (en) * | 2014-09-17 | 2015-01-07 | 南京理工大学 | Method utilizing K-based pyrolysis catalyst |
| CN105312040A (en) * | 2015-11-12 | 2016-02-10 | 中山大学 | Method for preparing efficient indoor formaldehyde adsorbent |
| CN105329892A (en) * | 2015-11-24 | 2016-02-17 | 吉林省凯禹生物质开发利用有限公司 | Method for producing capacitive carbon from rice husks |
| EP3006399A1 (en) * | 2007-04-04 | 2016-04-13 | Sony Corporation | Porous carbon material, process for producing the same, adsorbent, mask, adsorbent sheet and supporting member |
| CN106378137A (en) * | 2016-11-14 | 2017-02-08 | 天津工业大学 | Method for preparing rice husk-based supported metal catalyst mesoporous carbon |
| CN106430187A (en) * | 2016-09-20 | 2017-02-22 | 湖南南方搏云新材料股份有限公司 | Method of using uncured carbon felt leftover material for preparing supercapacitor electrode activated carbon |
| CN106517183A (en) * | 2016-11-15 | 2017-03-22 | 河南理工大学 | A low-cost simple preparing method for nitrogen-doped porous charcoal with a high specific surface area |
| CN108658567A (en) * | 2018-05-30 | 2018-10-16 | 安徽润晟建设有限公司 | A kind of cracking resistance high-strength insulation brick |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0915711A (en) * | 1995-06-30 | 1997-01-17 | Fuji Photo Optical Co Ltd | Data imprinting device for camera |
-
1998
- 1998-06-12 CN CN98114553A patent/CN1057065C/en not_active Expired - Fee Related
Cited By (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100503435C (en) * | 2003-05-16 | 2009-06-24 | 中国人民解放军军事医学科学院毒物药物研究所 | Nano level active carbon and its preparation and use |
| CN100354201C (en) * | 2005-12-02 | 2007-12-12 | 张海军 | Natural gas adsorpting super active carbon and its producing process and activation furnace |
| EP4122883A1 (en) * | 2007-04-04 | 2023-01-25 | Sony Group Corporation | Carbon-polymer complex and adsorbent comprising the same |
| US10714750B2 (en) | 2007-04-04 | 2020-07-14 | Sony Corporation | Porous carbon materials and production process thereof, and adsorbents, masks, adsorbing sheets and carriers |
| US10756346B2 (en) | 2007-04-04 | 2020-08-25 | Sony Corporation | Porous Carbon Material |
| US11545665B2 (en) | 2007-04-04 | 2023-01-03 | Sony Corporation | Carbon-polymer complex |
| EP3006399A1 (en) * | 2007-04-04 | 2016-04-13 | Sony Corporation | Porous carbon material, process for producing the same, adsorbent, mask, adsorbent sheet and supporting member |
| US11955638B2 (en) | 2007-04-04 | 2024-04-09 | Sony Corporation | Sheet-shaped member |
| CN101670278B (en) * | 2009-09-22 | 2012-01-18 | 江汉大学 | Method for preparing desulfurization absorbent by using rice husk ash |
| CN101804988A (en) * | 2010-05-05 | 2010-08-18 | 吉林大学 | Novel method for preparing silicon dioxide and active carbon from rice hull ash |
| CN101891189B (en) * | 2010-08-13 | 2011-11-23 | 宁乡县亮之星米业有限公司 | Method for preparing coal gas, top-grade active carbon, water glass and silicate phosphate from rice hulls |
| CN101891189A (en) * | 2010-08-13 | 2010-11-24 | 宁乡县亮之星米业有限公司 | Method for preparing coal gas, top-grade active carbon, water glass and silicate phosphate from rice hulls |
| CN102247802A (en) * | 2011-04-27 | 2011-11-23 | 中南大学 | Method for preparing activated carbon |
| CN102897746B (en) * | 2012-09-25 | 2015-04-29 | 珠海市吉林大学无机合成与制备化学重点实验室 | Porous carbon material and method for preparing same |
| CN102897746A (en) * | 2012-09-25 | 2013-01-30 | 珠海市吉林大学无机合成与制备化学重点实验室 | Porous carbon material and method for preparing same |
| CN102862983A (en) * | 2012-09-26 | 2013-01-09 | 中国科学院山西煤炭化学研究所 | Preparation method of spherical active carbon for capturing CO2 |
| CN103408009A (en) * | 2013-04-27 | 2013-11-27 | 吉林大学 | Preparation method for coproduction of high-specific-capacitance active carbon and nano silicon dioxide from rice hull |
| CN103224236B (en) * | 2013-05-20 | 2015-06-24 | 山东沂蒙山花生油股份有限公司 | Peanut shell activated carbon for removing toxins in peanut oil and preparation method thereof |
| CN103224236A (en) * | 2013-05-20 | 2013-07-31 | 山东沂蒙山花生油股份有限公司 | Peanut shell activated carbon for removing toxins in peanut oil and preparation method thereof |
| CN104258889A (en) * | 2014-09-17 | 2015-01-07 | 南京理工大学 | Method utilizing K-based pyrolysis catalyst |
| CN105312040A (en) * | 2015-11-12 | 2016-02-10 | 中山大学 | Method for preparing efficient indoor formaldehyde adsorbent |
| CN105329892A (en) * | 2015-11-24 | 2016-02-17 | 吉林省凯禹生物质开发利用有限公司 | Method for producing capacitive carbon from rice husks |
| CN106430187A (en) * | 2016-09-20 | 2017-02-22 | 湖南南方搏云新材料股份有限公司 | Method of using uncured carbon felt leftover material for preparing supercapacitor electrode activated carbon |
| CN106378137A (en) * | 2016-11-14 | 2017-02-08 | 天津工业大学 | Method for preparing rice husk-based supported metal catalyst mesoporous carbon |
| CN106517183A (en) * | 2016-11-15 | 2017-03-22 | 河南理工大学 | A low-cost simple preparing method for nitrogen-doped porous charcoal with a high specific surface area |
| CN108658567A (en) * | 2018-05-30 | 2018-10-16 | 安徽润晟建设有限公司 | A kind of cracking resistance high-strength insulation brick |
Also Published As
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|---|---|
| CN1057065C (en) | 2000-10-04 |
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