JP3149504B2 - Fibrous activated carbon and its production method - Google Patents
Fibrous activated carbon and its production methodInfo
- Publication number
- JP3149504B2 JP3149504B2 JP05084892A JP5084892A JP3149504B2 JP 3149504 B2 JP3149504 B2 JP 3149504B2 JP 05084892 A JP05084892 A JP 05084892A JP 5084892 A JP5084892 A JP 5084892A JP 3149504 B2 JP3149504 B2 JP 3149504B2
- Authority
- JP
- Japan
- Prior art keywords
- activated carbon
- fibrous activated
- pitch
- fiber
- surface area
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Description
【０００１】[0001]
【産業上の利用分野】本発明は高比表面積を有する繊維
状活性炭及びその製造方法に関するものであり、従来の
ものと異なり高結晶性の炭素質から成っており導電性を
必要とする電子、電池材料に適するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fibrous activated carbon having a high specific surface area and a method for producing the same. It is suitable for battery materials.
【０００２】[0002]
【従来の技術】高比表面積を有する活性炭は、これまで
にガス吸着剤、水処理剤、触媒など主に化学材料として
用いられてきたが、炭素材料が比較的導電性に優れてい
ることから電池材料や電子部品材料のようなエレクトロ
ニクス材料として注目されつつある。更に小さな電極部
材で、活性炭の性能を十分に発揮させる為に、繊維状の
活性炭からなるフェルト状の布の形態にして用いられる
ことが一般的であってフェノール、レーヨン、ポリアク
リロニトリル系の原料から製造した活性炭繊維を用いて
いた。2. Description of the Related Art Activated carbon having a high specific surface area has been mainly used as a chemical material such as a gas adsorbent, a water treatment agent, and a catalyst. It is attracting attention as an electronic material such as a battery material and an electronic component material. Further, in order to sufficiently exhibit the performance of activated carbon with a smaller electrode member, it is generally used in the form of a felt-like cloth made of fibrous activated carbon, which is made of phenol, rayon, polyacrylonitrile-based material. The manufactured activated carbon fiber was used.
【０００３】[0003]
【発明が解決しようとする課題】これらの原料はいずれ
も難黒鉛化性の材料であって、通常の方法で焼成して製
造した炭素化合物は、黒鉛結晶が十分発達することが難
しく、活性炭素繊維中の黒鉛化度はいたって低く、水素
元素や、特にポリアクリロニトリルの場合には窒素元素
が残有しており、通常水素元素含有量が０．６重量％以
上は含まれている。この為に電子部品や電池材料に用い
るには導電性の点で改良することが望まれていた。つま
り、高比表面積を有する繊維状の活性炭であって、高結
晶性の炭素質物質からなり、炭素元素含有量が多く水素
元素や、窒素元素をほとんど含まないものが望まれてい
た。又、一方、高結晶性の炭素質物質になることが従来
からよく知られている光学異方性のピッチいわゆるメソ
フェーズピッチから高比表面積の繊維状活性炭の製造に
成功した例は従来なく、せいぜい比表面積が７００ｍ 2
／ｇの例（公開特許公報昭６１−３４２２５号）や比表
面積が１５００ｍ2／ｇのものを製造し得ても、光学的
に等方性のピッチに紡糸ノズルで複合化して、複合化分
割０．５と、繊維全体が高結晶性のものとなる繊維状活
性炭にはなりえなかった。However, these raw materials are
Is also a non-graphitizable material, and is manufactured by firing in the usual way.
It is difficult for the produced carbon compound to develop graphite crystals sufficiently.
The degree of graphitization in activated carbon fiber is extremely low, and hydrogen
Element, and especially nitrogen in the case of polyacrylonitrile
And the hydrogen content is usually 0.6% by weight or less.
The top is included. For this reason, it is used for electronic parts and battery materials.
For this purpose, it has been desired to improve the conductivity. Toes
Activated carbon with high specific surface area
Hydrogen, which is composed of crystalline carbonaceous material and has a high carbon element content
It is desired that the material contains almost no element or nitrogen element.
Was. On the other hand, it has been the conventional practice to become highly crystalline carbonaceous materials.
Well-known optically anisotropic pitch, so-called meso
For the production of high specific surface area fibrous activated carbon from phase pitch
There has been no successful example, and the specific surface area is at most 700 m. Two
/ G (Publication No. 61-34225) and ratio table
The area is 1500mTwo/ G
Into a isotropic pitch with a spinning nozzle.
0.5, fibrous activity that makes the whole fiber highly crystalline
It could not be sex charcoal.
【０００４】[0004]
【課題を解決するための手段】そこで本発明者等は、鋭
意検討の結果、かかる課題が、光学異方質のピッチから
紡糸して得た繊維を特定の方法で処理することにより解
決されることを見い出し本発明に到達した。すなわち、
本発明の目的は、高結晶性、高比表面積の活性炭を提供
することであり、かかる目的は、光学異方性相を５０体
積％以上含有するピッチを溶融紡糸し、かつその後の製
造過程で繊維に薬剤を付与して加熱する工程を経由して
製造される繊維状活性炭であって、ＢＥＴ法による比表
面積が１０００ｍ2 ／ｇ以上であり、かつ水素元素の含
有量が０．５重量％以下であることを特徴とする繊維状
活性炭により達成される。The inventors of the present invention have made intensive studies and, as a result, have solved such a problem by treating a fiber obtained by spinning from an optically anisotropic pitch by a specific method. The inventors have found that the present invention has been achieved. That is,
An object of the present invention is to provide an activated carbon having a high crystallinity and a high specific surface area, and an object of the present invention is to melt-spin a pitch containing at least 50% by volume of an optically anisotropic phase, and to carry out the subsequent production process. A fibrous activated carbon produced through a step of applying a drug to fibers and heating the fiber, wherein the specific surface area by the BET method is 1000 m 2 / g or more, and the content of a hydrogen element is 0.5% by weight. more is achieved fibrous <br/> activated carbon, characterized in that at most.
【０００５】以下、本発明をより詳細に説明する。ここ
で用いる光学異方性相を含有するピッチは、炭素質原料
を出発物質として製造する。例えば、石炭系のコールタ
ール、コールタールピッチ、石炭液化物、石油系の重質
油、ピッチ、石油樹脂の熱重縮合反応生成物、ナフタレ
ンやアントラセンの触媒反応による重合反応生成物さら
に低分子芳香族化合物のホルマリン架橋樹脂等が挙げら
れる。これらの炭素質原料にはフリーカーボン、未溶解
石炭、灰分、触媒等の不純物が含まれているが、これら
の不純物は、濾過、遠心分離、あるいは溶剤を使用する
静置沈降分離等の周知の方法であらかじめ除去しておく
ことが望ましい。Hereinafter, the present invention will be described in more detail. The pitch containing the optically anisotropic phase used here is produced using a carbonaceous raw material as a starting material. For example, coal-based coal tar, coal tar pitch, coal liquefaction, petroleum heavy oil, pitch, thermal polycondensation reaction product of petroleum resin, polymerization reaction product by catalytic reaction of naphthalene and anthracene, and low molecular aroma And a formalin cross-linked resin of a group III compound. These carbonaceous materials contain impurities such as free carbon, undissolved coal, ash, and catalysts. These impurities are well-known in the art, such as filtration, centrifugation, or stationary sedimentation using a solvent. It is desirable to remove them in advance by a method.
【０００６】一般的には本発明の特徴を具備するピッチ
の製造法では前述の炭素質の出発物質を通常３５０〜５
００℃、好ましくは３８０〜４５０℃で、２分から５０
時間、好ましくは５分から５時間、窒素、アルゴン、水
蒸気等の不活性ガス雰囲気下、あるいは、吹き込み下に
加熱処理する。又更に必要に応じた処理を行ないピッチ
を製造する。この様にして得られた紡糸ピッチから製造
したピッチ繊維は酸化性雰囲気下で不融化を目的に焼成
して不融化繊維を得る不融化条件は１５０℃〜４００℃
の温度条件で５分〜１２０時間、好ましくは２０分〜１
０時間で行なう。Generally, in a method for producing a pitch having the characteristics of the present invention, the above-mentioned carbonaceous starting material is usually used in an amount of 350 to 5%.
00 ° C, preferably 380-450 ° C, for 2 minutes to 50
The heat treatment is performed for a period of time, preferably 5 minutes to 5 hours, in an atmosphere of an inert gas such as nitrogen, argon, or steam, or while blowing. Further, the pitch is manufactured by performing processing as needed. The pitch fiber produced from the spun pitch obtained in this manner is baked in an oxidizing atmosphere for the purpose of infusibilization to obtain an infusible fiber.
5 minutes to 120 hours, preferably 20 minutes to 1
Perform at 0 hours.
【０００７】次いで必要に応じて窒素ガス、アルゴンガ
スの様な不活性ガス雰囲気下４００℃〜２０００℃、好
ましくは４００℃〜１５００℃の温度で炭化処理して炭
化繊維を得る。さらに必要に応じて１５００〜３０００
℃の温度で焼成して黒鉛結晶の発達した黒鉛繊維を得
る。次に、上述の様な方法で製造した不融化繊維、炭化
繊維、黒鉛繊維いずれかを好ましくは不融化繊維又は４
００℃〜１５００℃で不活性ガス雰囲気下焼成した炭化
繊維、より好ましくは不融化処理を３００℃以上の温度
条件が１００〜２００℃から一定の昇温速度で行った不
融化繊維、又はその後４００〜８００℃で不活性ガス雰
囲気下焼成した炭化繊維に、薬剤を、焼成繊維に対し、
０．０１〜５０重量部、好ましくは１〜２０重量部添加
し３００℃〜１８００℃好ましくは４００℃〜１００℃
の温度で、１分〜５０時間好ましくは１０分〜１０時間
処理して賦活する。用いる薬剤としてはＫＯＨ、ＮａＯ
Ｈ、ＣｓＯＨ等のアルカリ金属水酸化物、Ｍｇ（ＯＨ）
2、Ｃａ（ＯＨ）2、Ｂａ（ＯＨ）2、等のアルカリ土類
金属水酸化物、ＺｎＣｌ2、ＣａＣｌ2 等の金属塩化
物、Ｈ2ＳＯ4、Ｈ3ＰＯ4等の酸、Ｋ2Ｓ、Ｋ2ＳＯ4等の
カリウム塩を単独又は２種以上混合して用いる。好まし
くはアルカリ金属の水酸化物を用いる。Then, if necessary, carbonized fibers are obtained in an atmosphere of an inert gas such as nitrogen gas or argon gas at a temperature of 400 ° C. to 2000 ° C., preferably 400 ° C. to 1500 ° C. 1500 to 3000 if necessary
It is calcined at a temperature of ° C. to obtain a graphite fiber with developed graphite crystals. Next, any of the infusibilized fiber, the carbonized fiber, and the graphite fiber produced by the method described above is preferably used as the infusibilized fiber or 4.
Carbonized fiber fired in an inert gas atmosphere at 00 ° C to 1500 ° C, more preferably infusibilized fiber in which the infusibilization treatment is performed at a constant 300 ° C or higher temperature condition from 100 to 200 ° C, or 400 ° C thereafter. The agent is applied to the carbonized fiber baked under an inert gas atmosphere at ~ 800 ° C,
0.01 to 50 parts by weight, preferably 1 to 20 parts by weight, and 300 ° C to 1800 ° C, preferably 400 ° C to 100 ° C
At a temperature of 1 minute to 50 hours, preferably 10 minutes to 10 hours. KOH, NaO
Alkali metal hydroxides such as H and CsOH, Mg (OH)
2, Ca (OH) 2, Ba (OH) 2, alkaline earth metal hydroxides etc., ZnCl 2, CaCl 2, etc. of a metal chloride, H 2 SO 4, H 3 PO 4 acid such as, K 2 Potassium salts such as S and K 2 SO 4 are used alone or in combination of two or more. Preferably, an alkali metal hydroxide is used.
【０００８】薬剤処理する時の雰囲気は窒素、アルゴ
ン、ヘリウムの様る不活性ガスを用いることが一般的で
あるが、アルカリ金属の水酸化物を薬剤とする場合に賦
活処理中に副生するアルカリ金属を再生し、発火等の異
常反応を防止する為に、処理中又は処理後半以降水蒸気
等の酸化性のガスを混入することがある。薬剤で処理す
る反応条件は、通常ピッチ焼成繊維に対する薬剤の量
比、処理温度、処理時間を調節して行うことが出来る
が、これらの反応条件を厳しくする方向つまり、薬剤の
量比、温度、時間を大きくすると細孔容量、比表面積が
例えば２０００ｍ2／ｇ以上と大きくなり、とくに、細
孔直径２０Å以上の細孔容量を例えば０．４ｃｍ2／ｇ
以上増加しうる。細孔直径２０Å以上の細孔は、特に大
きな分子サイズのものの吸着に有効な細孔であり、有機
分子、無機分子のイオンの吸着に適しており、電池用電
極等に好適なものが製造出来る。薬剤処理終了後、水洗
等の洗浄を行ない、残有する薬剤を除去し、必要に応じ
て乾燥して、高比表面積のピッチ繊維状活性炭を製造す
る。In general, an inert gas such as nitrogen, argon or helium is used as the atmosphere during the chemical treatment. However, when an alkali metal hydroxide is used as the chemical, it is by-produced during the activation treatment. In order to regenerate the alkali metal and prevent abnormal reactions such as ignition, an oxidizing gas such as water vapor may be mixed during the treatment or after the latter half of the treatment. Reaction conditions for treating with a drug can be performed by adjusting the amount ratio of the drug to the pitch fired fiber, the processing temperature, and the processing time, but in the direction in which these reaction conditions are strict, that is, the amount ratio of the drug, the temperature, When the time is increased, the pore volume and the specific surface area are increased to, for example, 2000 m 2 / g or more. In particular, the pore volume having a pore diameter of 20 ° or more is reduced to, for example, 0.4 cm 2 / g.
It can increase more. A pore having a pore diameter of 20 ° or more is a pore that is particularly effective for adsorbing a large molecular size, is suitable for adsorbing ions of organic molecules and inorganic molecules, and can be produced for a battery electrode or the like. . After completion of the chemical treatment, washing such as water washing is performed to remove residual chemicals and, if necessary, drying to produce a pitch fibrous activated carbon having a high specific surface area.
【０００９】[0009]
【発明の効果】本発明によれば、従来高比表面積の繊維
状活性炭にはなり得ないとされてきた光学異方質のピッ
チ（メソフェーズピッチ）を使用して高性能、高結晶性
の繊維状活性炭を得られる。以下本発明を実施例を用い
てより詳細に説明する。According to the present invention, a high-performance, highly crystalline fiber is produced by using an optically anisotropic pitch (mesophase pitch), which has conventionally been regarded as not being a fibrous activated carbon having a high specific surface area. Activated carbon is obtained. Hereinafter, the present invention will be described in more detail with reference to examples.
【００１０】[0010]
実施例１コールタールピッチより軟化点３００℃かつ偏
光顕微鏡下で観察した光学的異方性割合が９５％の紡糸
ピッチを調製した。これをノズル径０．１ｍｍ、孔約４
０００の紡糸口金を用い、口金温度３３０℃で溶融紡糸
し、得られた糸径１２μｍのピッチ繊維にシリコン系の
油剤を付着させ集束した。このピッチ繊維を室温からゆ
っくり３１０℃まで空気中で昇温し、焼成し、不融化繊
維を得た。更に、この不融化繊維を窒素ガス中５４５℃
で炭化し、炭素繊維を得た。この炭素繊維１０ｇに Ｋ
ＯＨ ４０ｇ、水２０ｍｌ、エチルアルコール ２０ｍ
ｌを加え、超音波で振とうした。Example 1 A spinning pitch was prepared from a coal tar pitch having a softening point of 300 ° C. and an optical anisotropy ratio of 95% as observed under a polarizing microscope. The nozzle diameter is 0.1mm and the hole is about 4
Using a 2,000 spinneret, melt spinning was performed at a die temperature of 330 ° C., and a silicone-based oil agent was attached to the obtained pitch fiber having a diameter of 12 μm to be bundled. The pitch fiber was slowly heated from room temperature to 310 ° C. in the air and baked to obtain an infusible fiber. Further, the infusibilized fiber was heated at 545 ° C.
To obtain carbon fibers. To 10 g of this carbon fiber, K
OH 40g, water 20ml, ethyl alcohol 20m
1 was added and shaken with ultrasound.
【００１１】このあと、ロータリーエバポレーターで、
水とエチルアルコーロを留去し、さらに１２０℃で一昼
夜乾燥した。これを黒鉛のルツボに入れ窒素ガス気流下
電気炉中で４００℃から２℃／分で８００℃まで昇温
し、２時間８００℃で保持してＫＯＨによる賦活処理を
行った。反応終了後、室温まで冷却し、水蒸気を反応生
成的にさらし、さらにこのあと水を１２５ｍｌ加え副生
したアルカリ金属を処理し無害化し、さらに３回１２５
ｍｌの水で、ＫＯＨを洗浄除去した。さらに５％塩酸８
０ｍｌで洗浄し、微少量残るＫＯＨを洗浄除去した。こ
のあと塩酸を除去する目的で水、エチルアルコールで反
応生成的繊維状活性炭を洗浄し、最後に１２０℃で一昼
夜乾燥した。得られた繊維状活性炭は５．６ｇｒであ
り、これをＢＥＴ法で測定した比表面積は２５６０ｍ2
／ｇ、全細孔容積は１．１５５ｃｃ／ｇ、細孔径２０Å
以上の細孔容積は０．１７３ｃｃ／ｇ、元素分析では水
素元素は０．３重量％以下、であった。[0011] Then, the rotary evaporator,
Water and ethyl alcohol were distilled off, and the mixture was further dried at 120 ° C. overnight. This was placed in a graphite crucible and heated from 400 ° C. to 800 ° C. at a rate of 2 ° C./min in an electric furnace under a stream of nitrogen gas, and kept at 800 ° C. for 2 hours to perform an activation treatment with KOH. After the completion of the reaction, the reaction mixture was cooled to room temperature, exposed to water vapor for reaction formation, and further treated with 125 ml of water to remove alkali metal as a by-product.
The KOH was washed off with ml of water. Further 5% hydrochloric acid 8
After washing with 0 ml, a small amount of remaining KOH was washed away. Thereafter, the fibrous activated carbon produced by the reaction was washed with water and ethyl alcohol for the purpose of removing hydrochloric acid, and finally dried at 120 ° C. for 24 hours. The obtained fibrous activated carbon was 5.6 gr, and the specific surface area measured by the BET method was 2560 m 2.
/ G, total pore volume 1.155 cc / g, pore diameter 20 °
The above pore volume was 0.173 cc / g, and elemental analysis revealed that the content of hydrogen element was 0.3% by weight or less.
【００１２】実施例２ 炭素繊維１０ｇにＫＯＨ ７０ｇ、水２０ｍｌ、エチル
アルコール２０ｍｌを加えた以外は実施例１と同様に処
理して繊維状活性炭３．４ｇｒを得た。 これをＢＥＴ
法で測定した比表面積は２５００ｍ2／ｇ、全細孔容積
は１．２５１ｃｃ／ｇ、細孔径３０Å以上の細孔容積は
０．４７０ｃｃ／ｇ、元素分析では水素元素は０．３重
量％以下であった。 実施例３ 実施例１で製造した繊維状活性炭を窒素ガス雰囲気中で
８００℃、２時間焼成した。このものの元素分析は、炭
素元素９５．４重量％、水素、窒素元素は０．３重量％
以下であった。さらにこれをアルゴン雰囲気中で２８０
０℃で３０分間焼成し、粉末Ｘ線法で調べたところ黒鉛
結晶の生成が見られ、黒鉛面間隔であるｄｏｏ２は３．
３９Å、黒鉛結晶子の厚さＬｃは１２０Åであった。Example 2 The same treatment as in Example 1 was carried out except that 70 g of KOH, 20 ml of water and 20 ml of ethyl alcohol were added to 10 g of carbon fiber to obtain 3.4 gr of fibrous activated carbon. BET this
Specific surface area measured by the method is 2500 m 2 / g, total pore volume is 1.251 cc / g, pore volume with a pore diameter of 30 ° or more is 0.470 cc / g. Met. Example 3 The fibrous activated carbon produced in Example 1 was fired at 800 ° C. for 2 hours in a nitrogen gas atmosphere. Elemental analysis of the product showed 95.4% by weight of carbon element and 0.3% by weight of hydrogen and nitrogen elements.
It was below. Further, this is 280 in an argon atmosphere.
The powder was fired at 0 ° C. for 30 minutes and examined by a powder X-ray method. As a result, graphite crystals were found to be formed.
39 ° and the thickness Lc of the graphite crystallite was 120 °.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平１−139865（ＪＰ，Ａ) 特開 昭62−152534（ＪＰ，Ａ) 特開 平３−82820（ＪＰ，Ａ) 特開 昭62−149917（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) D01F 9/14 - 9/155 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-1-139865 (JP, A) JP-A-62-152534 (JP, A) JP-A-3-82820 (JP, A) JP-A-62-152 149917 (JP, A) (58) Field surveyed (Int. Cl. 7 , DB name) D01F 9/14-9/155
Claims (6)
ピッチを溶融紡糸し、かつその後の製造過程で繊維に薬
剤を付与して加熱する工程を経由して製造される繊維状
活性炭であって、ＢＥＴ法による比表面積が１０００ｍ
2 ／ｇ以上であり、かつ水素元素の含有量が０．５重量
％以下であることを特徴とする繊維状活性炭。1. A fibrous activated carbon produced by melt-spinning a pitch containing 50% by volume or more of an optically anisotropic phase, and applying a drug to fibers in a subsequent production process and heating the fibers. The specific surface area by the BET method is 1000m
2 / g or more, and the content of hydrogen element is 0.5% by weight or less, fibrous activated carbon characterized by the above-mentioned.
／ｇ以上であり、かつ細孔直径２０Å以上の細孔容積が
０．４ｃｍ3 ／ｇ以上である請求項１記載の繊維状活性
炭。2. The specific surface area by the BET method is 2000 m 2.
2. The fibrous activated carbon according to claim 1, which has a pore volume of 20 cm / g or more and a pore volume of 20 mm or more in pore diameter is 0.4 cm 3 / g or more.
ある請求項１又は２記載の繊維状活性炭。3. The fibrous activated carbon according to claim 1, wherein the content of hydrogen element is 0.3% by weight or less.
土類金属水酸化物、ＺｎＣｌ2 、ＣａＣｌ2 、Ｈ2 ＳＯ
4 、Ｈ3 ＰＯ4 、Ｋ2 Ｓ及びＫ2 ＳＯ4 より成る群から
選ばれた少なくとも１種であることを特徴とする請求項
１ないし３のいずれかに記載の繊維状活性炭。4. The method according to claim 1, wherein the chemical is an alkali metal hydroxide, an alkaline earth metal hydroxide, ZnCl 2 , CaCl 2 , H 2 SO.
4, H 3 PO 4, K 2 S , and fibrous activated carbon according to any one of claims 1 to 3, characterized in that at least one selected from the group consisting of K 2 SO 4.
与される繊維がピッチを溶融紡糸して得たピッチ繊維を
不融化し、さらに４００〜１５００℃で焼成して炭化さ
せた炭化繊維であることを特徴とする請求項１ないし３
のいずれかに記載の繊維状活性炭。5. The drug is potassium hydroxide, and the fiber to which the drug is applied is made of infusible pitch fiber obtained by melt-spinning the pitch, and further calcined at 400 to 1500 ° C. to obtain carbonized fiber. 4. The method according to claim 1, wherein:
The fibrous activated carbon according to any one of the above.
を３５０〜５００℃で加熱処理して光学異方性相を５０
体積％以上形成させたものである請求項１ないし５のい
ずれかに記載の繊維状活性炭。6. The pitch used for melt spinning is such that the carbonaceous material is heat-treated at 350 to 500 ° C. so that the optically anisotropic phase becomes 50%.
The fibrous activated carbon according to any one of claims 1 to 5, wherein the activated carbon is formed by volume% or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05084892A JP3149504B2 (en) | 1992-03-09 | 1992-03-09 | Fibrous activated carbon and its production method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05084892A JP3149504B2 (en) | 1992-03-09 | 1992-03-09 | Fibrous activated carbon and its production method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05247731A JPH05247731A (en) | 1993-09-24 |
| JP3149504B2 true JP3149504B2 (en) | 2001-03-26 |
Family
ID=12870146
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP05084892A Expired - Lifetime JP3149504B2 (en) | 1992-03-09 | 1992-03-09 | Fibrous activated carbon and its production method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3149504B2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10084910B4 (en) | 1999-08-10 | 2009-06-10 | Honda Giken Kogyo K.K. | Process for producing activated carbon for an electrode of an electric double-layer capacitor |
| JP5271851B2 (en) * | 2009-08-28 | 2013-08-21 | 関西熱化学株式会社 | Method for producing activated carbon and electric double layer capacitor using activated carbon obtained by the method |
| US8809231B2 (en) * | 2011-09-28 | 2014-08-19 | Corning Incorporated | Method for making alkali activated carbon |
| JP6352606B2 (en) * | 2013-08-30 | 2018-07-04 | 関西熱化学株式会社 | Method for producing graphite material, and graphite material |
| JP6261282B2 (en) * | 2013-10-21 | 2018-01-17 | 旭化成メディカル株式会社 | Drug removal filter, drug removal system, and drug removal method |
-
1992
- 1992-03-09 JP JP05084892A patent/JP3149504B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05247731A (en) | 1993-09-24 |
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