JPS6154236A - Activated carbon composition - Google Patents
Activated carbon compositionInfo
- Publication number
- JPS6154236A JPS6154236A JP59173124A JP17312484A JPS6154236A JP S6154236 A JPS6154236 A JP S6154236A JP 59173124 A JP59173124 A JP 59173124A JP 17312484 A JP17312484 A JP 17312484A JP S6154236 A JPS6154236 A JP S6154236A
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- JP
- Japan
- Prior art keywords
- activated carbon
- elements
- acetaldehyde
- group
- adsorption
- 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.)
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Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明はアセトアルデヒドの吸着特性を向上させた活性
炭組成物に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to an activated carbon composition with improved acetaldehyde adsorption properties.
一般にアセトアルデヒド（ＣＨ３ＣＨＯ）はその沸点２
０．２°Ｃ以上でガス状を呈し、特異な刺激臭を伴なう
有害物質で、その臭気知覚濃度は約０゜２１ ｐｐｍと
されており、極めて低濃度の環境下においてもその臭気
が感じられる。Generally, acetaldehyde (CH3CHO) has a boiling point of 2
It is a harmful substance that becomes gaseous at temperatures above 0.2°C and has a unique pungent odor.The perceived odor concentration is approximately 0°21 ppm, and its odor remains strong even in environments with extremely low concentrations. felt.
このアセトアルデヒドはアセトアルデヒド及びその誘導
体の製造工場の空気中に１０〜１００ ｐｐｍ含まれて
いるほか、たばこの喫煙によって生ずる主流煙中にも比
較的多量に含まれ、その含有量はたばこ１本当り約１ｍ
ｇにも達するといわれている。This acetaldehyde is contained in the air of factories manufacturing acetaldehyde and its derivatives at a concentration of 10 to 100 ppm, and is also contained in relatively large amounts in the mainstream smoke produced by cigarette smoking, with the content being approximately 10 to 100 ppm per cigarette. 1m
It is said that it can reach up to g.
このようなアセトアルデヒド含有空気を長期間吸入する
と循環器系統、神経系統もしくは呼吸器系統に障害をき
たすことがある。特に、たばこ主流煙中のアセトアルデ
ヒドは臓器の繊毛運動阻害物質として知られており、喫
煙衛生上好ましくないのみならずたばこの香喫味上から
も望ましくない化学成分の一つとされている。Inhaling such acetaldehyde-containing air for a long period of time may cause damage to the circulatory system, nervous system, or respiratory system. In particular, acetaldehyde in mainstream cigarette smoke is known as a substance that inhibits ciliary movement in organs, and is considered to be one of the chemical components that is not only undesirable from the standpoint of smoking hygiene but also from the standpoint of tobacco flavor.
従来、このようなアセトアルデヒドその他の有害ガス成
分の吸着剤として活性炭が広く使用されている。一般に
活性炭はその内部に径１０〜４０人程度の微細孔を多数
有しており、そのため比表面積が著しく大きく８００〜
１５００ｍ／ｇにも達している。Activated carbon has been widely used as an adsorbent for acetaldehyde and other harmful gas components. In general, activated carbon has a large number of micropores with a diameter of about 10 to 40 pores inside it, and therefore has a significantly large specific surface area of 800 to 400 pores.
It has reached 1500m/g.
活性炭の吸着力はこのような特異的な細孔構造に起因す
るものとされている。従って、活性炭に高い吸着特性を
付与するため、高度な物理的手法による賦活技術を用い
特異的な細孔構造を形成させる活性炭の改質が従来より
主として行なわれている。The adsorption power of activated carbon is said to be due to such a specific pore structure. Therefore, in order to impart high adsorption properties to activated carbon, it has conventionally been mainly carried out to modify activated carbon by forming a specific pore structure using activation technology using advanced physical methods.
しかし、一般に吸着剤による吸着現象はその吸着剤中の
細孔構造のみでなく、被吸着物質と吸着剤の化学的性質
の類似性、すなわち、いわゆる“ぬれ性”も吸着に及ぼ
す大きな支配要素の一つとされている。ところが、活性
炭吸着剤においては、その細孔表面は無定形の炭素から
成り、化学的には無極性かつ疎水性である。従って、一
般に活性。However, in general, the adsorption phenomenon by adsorbents is determined not only by the pore structure in the adsorbent, but also by the similarity of the chemical properties of the adsorbed substance and the adsorbent, that is, the so-called "wettability", which is a major controlling factor on adsorption. It is considered one. However, in activated carbon adsorbents, the pore surfaces are made of amorphous carbon and are chemically nonpolar and hydrophobic. Therefore, generally active.
炭に対しては無極性で分子量が大きく、沸点の高い物質
は吸着され易いが、アセトアルデヒドのような分子量が
小さく親水性の極性有機物質の吸着特性は極めて劣って
いる。よって、活性炭に対するアセトアルデヒドの吸着
特性を向上させるためには、活性炭の細孔構造を改質さ
せるだけでなくその無極性表面を極性化し親水性とする
ことが考えられる。Nonpolar substances with large molecular weights and high boiling points are easily adsorbed onto charcoal, but the adsorption properties of hydrophilic polar organic substances with small molecular weights such as acetaldehyde are extremely poor. Therefore, in order to improve the adsorption characteristics of acetaldehyde on activated carbon, it is conceivable to not only modify the pore structure of activated carbon but also to polarize its non-polar surface to make it hydrophilic.
従来、このような表面化学的観点に立脚して活性炭の改
質を企図した方法としては、例えば特開昭５４−７４２
６８号公報に見られるように、活性炭をｐｌｆ７以下の
酸性に調整した場合アセトアルデヒドが効果的に除去さ
れるとしているが、これは処理温度条件が１５０〜３０
０°Ｃの場合で、常温での吸着効果は満足し得るもので
はない。又、特開昭４８−３８２９１号公報にはスピネ
ル型の金属酸化物を含をさせた活性炭組成物についての
開示があるが、この場合は分子状酸素の共存下でないと
アセトアルデヒドの吸着効果は十分でないという問題点
がある。Conventionally, as a method for modifying activated carbon based on such a surface chemical viewpoint, for example, Japanese Patent Application Laid-Open No. 54-742
As seen in Publication No. 68, it is stated that acetaldehyde is effectively removed when activated carbon is acidified to plf 7 or less, but this does not apply if the treatment temperature conditions are 150 to 30 plf.
In the case of 0°C, the adsorption effect at room temperature is not satisfactory. Furthermore, JP-A No. 48-38291 discloses an activated carbon composition containing a spinel-type metal oxide, but in this case, the adsorption effect of acetaldehyde is insufficient unless molecular oxygen is present. There is a problem that it is not.
一本発明はかかる従来技術の問題点に鑑がみてなされた
もので、常温でしかも特殊な環境条件を必要とすること
なく活性炭の細孔表面を極性化し、親水性を付与するこ
とにより、アセトアルデヒドを含有する気体からアセト
アルデヒドを効果的に吸着除去する活性炭組成物を提供
することを目的とするものである。The present invention has been made in view of the problems of the prior art, and allows acetaldehyde to be removed by polarizing the pore surface of activated carbon and imparting hydrophilic properties at room temperature and without the need for special environmental conditions. An object of the present invention is to provide an activated carbon composition that effectively adsorbs and removes acetaldehyde from a gas containing .
すなわち本発明は、リチウム、ナトリウム、カリウムか
らなる周期律表第工＾族元素、マグネシウム、カルシウ
ムからなる該表第１Ｉｓ族元素、ホウ素、アルミニウム
からなる該表第１［１ａ族元素、珪素、スズからなる該
表第■８族元素、リンからなる該表第ＶＢ族元素、及び
チタン、ジルコニウム、銅からなる遷移元素から選ばれ
る元素の１種又は２種以上の酸化物及び／又は水酸化物
を活性炭の表面及び／又は細孔内に形成させたことを特
徴とする活性炭組成物である。That is, the present invention provides for elements of Group I of the periodic table consisting of lithium, sodium, and potassium; oxides and/or hydroxides of one or more elements selected from Group VIII elements of the Table, consisting of elements of Group VB of the Table, consisting of phosphorus, and transition elements consisting of titanium, zirconium, and copper; This is an activated carbon composition characterized in that: is formed on the surface and/or in the pores of activated carbon.
これらの元素の酸化物又は水酸化物は活性炭の。Oxides or hydroxides of these elements are activated carbon.
無極性及び疎水性表面を極性及び親水性表面に改質する
作用を有し、これらの酸化物又は水酸化物を活性炭の表
面又は細孔内に形成させた活性炭組成物はアセトアルデ
ヒドに対しすぐれた吸着特性を示す。Activated carbon compositions that have the effect of modifying non-polar and hydrophobic surfaces into polar and hydrophilic surfaces, and in which these oxides or hydroxides are formed on the surface or in the pores of activated carbon, have excellent resistance to acetaldehyde. Shows adsorption properties.
本発明で使用される活性炭としては特に制限はないが、
粒状のヤシ殻炭、パーム炭等の植物系活性炭、又は石炭
系活性炭が好ましく、又、約５００〜１３００ｒｒｆ／
ｇの範囲のＢ−Ｅ−、Ｔ比表面積を有する活性炭が望ま
しい。The activated carbon used in the present invention is not particularly limited, but
Granular coconut shell charcoal, vegetable activated carbon such as palm charcoal, or coal-based activated carbon is preferable, and about 500 to 1300 rrf/
Activated carbon having a B-E-,T specific surface area in the range of g is desirable.
次に本発明の活性炭組成物の！ｌ！造方法を以下に説明
する。Next, the activated carbon composition of the present invention! l! The manufacturing method will be explained below.
先ず、上記元素の酸化物又は水酸化物を形成させるため
に使用される塩類又は化合物としては、 −上記元素
の塩化物、硝酸塩、硫酸塩、酢酸塩、シュウ酸塩、クエ
ン酸塩、リン酸塩、ホウ酸塩、ケイ酸塩、アルミン酸塩
及び金属アルコキシド等を挙げることができる。First, the salts or compounds used to form oxides or hydroxides of the above elements include - chlorides, nitrates, sulfates, acetates, oxalates, citrates, phosphoric acids of the above elements; Mention may be made of salts, borates, silicates, aluminates and metal alkoxides.
これらの塩類又は化合物の１種又は２種以上の水溶液も
しくはアルコール溶液に活性炭を混合して、これらの溶
液を活性炭の表面及び／又はｋｍ孔内に含浸せしめた後
、熱分解又は加水分解あるいは中和反応等の化学反応を
行なわせるか、乾燥等の手段を施こし、上記元素の酸化
物又は水酸化物あるいはこれらの混合物を活性炭の表面
及び／又は細孔内に析出せしめることにより容易に製造
することができる。Activated carbon is mixed with an aqueous or alcoholic solution of one or more of these salts or compounds, and these solutions are impregnated into the surface and/or km pores of the activated carbon, followed by thermal decomposition, hydrolysis, or intermediate treatment. It can be easily produced by precipitating oxides or hydroxides of the above elements or mixtures thereof on the surface and/or within the pores of activated carbon by carrying out a chemical reaction such as a chemical reaction, or by performing means such as drying. can do.
熱分解あるいは乾燥工程は常温から約９００°Ｃの範囲
の酸化物を形成し得る適当な温度域において、必要に応
じ分子状酸素を含まない不活性ガス中で行なわれる。又
、製造工程において中和反応を利用する場合は、中和剤
として尿素、アンモニア等の熱分解性の塩基性化合物を
使用することが望ましい。The thermal decomposition or drying step is carried out at a suitable temperature range from room temperature to about 900° C. at which oxides can be formed, if necessary in an inert gas containing no molecular oxygen. Further, when a neutralization reaction is used in the manufacturing process, it is desirable to use a thermally decomposable basic compound such as urea or ammonia as a neutralizing agent.
上述の製造工程における化学変化の一例を化学反応式に
基づいて以下に説明する。An example of chemical changes in the above-mentioned manufacturing process will be explained below based on a chemical reaction formula.
■ 熱分解反応を利用する場合
本発明で使用される元素の酸化物を形成させるための原
料化合物として、例えば硝酸塩を使用した場合は、次式
（１）の熱分解反応によりＮＯｘが気。(2) When using thermal decomposition reaction When, for example, nitrate is used as a raw material compound for forming the oxide of the element used in the present invention, NOx is released by the thermal decomposition reaction of the following formula (1).
体として系外に排出されると共に金属酸化物（ＭＯ％）
が活性炭の表面及び／又は細孔内に析出する。Metal oxides (MO%) are discharged from the system as a
precipitates on the surface and/or within the pores of activated carbon.
Ｍ （Ｎ Ｏ３） ｎ −７Ｍ Ｏ％＋ｎＮＯ〉≦
・・・・・・（１）（但し、Ｍは本発明で使用される金
属元素、。は金属元素Ｍの原子価を示す。）
■ 加水分解反応を利用する場合
■と同様の酸化物の原料化合物として例えば金属アルコ
キシドを使用した場合は、次式（２）の加水分解反応に
よりアルコール（ＲＯＨ）が生成すると共に金属酸化物
（Ｍ Ｏ）≦）が生成し、アルコールはその沸点以上の
温度で加熱することにより揮散し、金属酸化物が活性炭
の表面及び／又は細孔内に析出する。M (NO3) n −7M O% + nNO〉≦
・・・・・・(1) (However, M is the metal element used in the present invention, . indicates the valence of the metal element M.) ■ When using a hydrolysis reaction The same oxide as in ■ For example, when a metal alkoxide is used as a raw material compound, alcohol (ROH) is produced by the hydrolysis reaction of the following formula (2), and a metal oxide (MO)≦) is produced, and the alcohol is heated at a temperature above its boiling point. The activated carbon is vaporized by heating, and metal oxides are precipitated on the surface and/or in the pores of the activated carbon.
Ｍ（○Ｒ） ｎ ＋ｎ Ｈ２０−”ＭＯｑ ＋、 ＲＯ
Ｍ＝−（２１（但し、Ｍ及び。は式（１）の場合に同じ
、Ｒはアルキル基を示す。）
■ 中和反応を利用する場合
本発明で使用される元素の水酸化物又は酸化物を形成さ
せるための原料化合物として例えば硝酸塩を使用し、中
和剤として尿素を用いた場合は、次式（３）に基づいて
反応が進行する。M(○R) n +n H20-”MOq +, RO
M=-(21 (However, M and . are the same as in the case of formula (1), R represents an alkyl group.) ■ When using neutralization reaction Hydroxide or oxidation of the element used in the present invention When, for example, nitrate is used as a raw material compound for forming a compound and urea is used as a neutralizing agent, the reaction proceeds based on the following formula (3).
Ｍ （ＮＯ３）ｎ ”ＭＮＨ２ＣＯＮＨ２＋Ｍ。Ｈ２Ｏ
−Ｍ （ＯＨ） ｎ ＋ｎ ＮＨ４ＮＯ３＋ンｆ ＣＯ
２”−（３）（但し、Ｍ、ｎは式（１）の場合に同じ）
上記の反応は約８（ｊ−１００℃の温度域において進行
し、更に約２１０℃に加熱することにより硝酸アンモニ
ウム（ＮＨ４ＮＯ３）が揮散し、金属水酸化物（Ｍ （
ＯＨ） ｎ ）が活性炭の表面及び／又は細孔内に析出
する。M (NO3)n ”MNH2CONH2+M.H2O
-M (OH) n +n NH4NO3+nf CO
2”-(3) (However, M and n are the same as in formula (1))
The above reaction proceeds in a temperature range of about 8 (j - 100 °C), and by further heating to about 210 °C, ammonium nitrate (NH4NO3) is volatilized and metal hydroxide (M (
OH) n ) precipitates on the surface and/or within the pores of the activated carbon.
これを更に不活性気体中で４００〜６００℃に加熱する
ことにより、金属水酸化物を金属酸化物に転化させるこ
ともできる。The metal hydroxide can also be converted into a metal oxide by further heating this in an inert gas to 400 to 600°C.
上記の中和反応において中和剤としてアンモニアを使用
することによっても同様の反応により金属水酸化物又は
金属酸化物含有活性炭を得ること゛ができるに
のような方法で活性炭中に析出含有される元素の酸化物
又は水酸化物の金は活性炭組成物に対し約１〜２０重量
％、好ま°しくは約４〜１５重量。By using ammonia as a neutralizing agent in the above neutralization reaction, metal hydroxide or metal oxide-containing activated carbon can be obtained by a similar reaction. The elemental oxide or hydroxide gold is about 1 to 20% by weight of the activated carbon composition, preferably about 4 to 15% by weight.
％である。%.
上記の方法で製造された本発明の活性炭組成物はアセト
アルデヒド含有気体からのアセトアルデヒドの吸着除去
性能が常温においても著しくすぐれている。この理由は
、本来無極性かつ疎水性で・あった活性炭の表面及び／
又は細孔内壁が、本発明に係る元素の酸化物又は水酸化
物の析出によってコーティングされ、極性を有する親水
性吸着面に改質されるためと推察される。The activated carbon composition of the present invention produced by the above method has a remarkable ability to adsorb and remove acetaldehyde from an acetaldehyde-containing gas even at room temperature. The reason for this is that the surface of activated carbon, which was originally nonpolar and hydrophobic, and/or
Alternatively, it is assumed that this is because the inner walls of the pores are coated with the precipitation of the oxide or hydroxide of the element according to the present invention, and are modified into a polar hydrophilic adsorption surface.
次に本発明を実施例を掲げて更に具体的に説明する。 Next, the present invention will be described in more detail with reference to Examples.
先ず、以下の調製例に従って７種類の本発明の活性炭組
成物を調製した。First, seven types of activated carbon compositions of the present invention were prepared according to the following preparation examples.
調製例（１）
硝酸マグネシウム（Ｍｇ （ＮＯ３） ２ ・６Ｈ２
０）３．１８ｇを２０ｍ１の水に溶解し、この水溶液に
粒度２８〜８０メツシユの石灰系活性炭１０ｇを浸漬し
た。時々ガラス棒でかき混ぜ、２時間含浸処理を行なっ
て硝酸マグネシウム水溶液を充分活性炭に含浸させた後
、乾燥器に入れ１１０°Ｃで乾燥した。次いでこの試料
を管状電気炉中でチッソガスを通しながら４００°Ｃで
２時間熱処理して硝酸マグネシウムを熱分解し、活性炭
表面及び／又は細孔内に酸化マグネシウム（ＭｇＯ）を
析出せしめ、ＭｌｉＯ含有活性炭組成物を得た。この活
性炭組成物中のＭｇＯ含有量は４．８重量％であった。Preparation example (1) Magnesium nitrate (Mg (NO3) 2 ・6H2
0) 3.18 g was dissolved in 20 ml of water, and 10 g of lime-based activated carbon having a particle size of 28 to 80 mesh was immersed in this aqueous solution. The activated carbon was stirred occasionally with a glass rod and impregnated for 2 hours to fully impregnate the activated carbon with the magnesium nitrate aqueous solution, then placed in a dryer and dried at 110°C. Next, this sample was heat-treated at 400°C for 2 hours while passing nitrogen gas in a tubular electric furnace to thermally decompose magnesium nitrate and precipitate magnesium oxide (MgO) on the activated carbon surface and/or in the pores, resulting in MliO-containing activated carbon. A composition was obtained. The MgO content in this activated carbon composition was 4.8% by weight.
調製例（２）
硝酸アルミニウム（Ａβ（ＮＯ３）３ ・９Ｈ２０）
３．４８ｇと尿素０．８４ ｇを２０ｍ７！の水にン容
解し、これに粒度２８〜８０メツシユの石炭系活性炭１
０ｇを浸漬した。時々かき混ぜながら２時間含浸処理を
行なった後、１００°Ｃで乾燥した。Preparation example (2) Aluminum nitrate (Aβ(NO3)3 ・9H20)
3.48g and urea 0.84g in 20m7! Dissolve in water and add 1 part of coal-based activated carbon with a particle size of 28 to 80 mesh.
0g was immersed. After impregnating for 2 hours with occasional stirring, it was dried at 100°C.
この試料に再び同量の硝酸アルミニウムと尿素を含浸せ
しめ１００℃で乾燥した後、更に２１０℃で２時間加熱
した。この操作により水酸化アルミニウム（Ａｊ２ （
ＯＨ） ３ ）を１２．６重量％含有する活性炭組成物
を得た。This sample was again impregnated with the same amounts of aluminum nitrate and urea, dried at 100°C, and further heated at 210°C for 2 hours. This operation produces aluminum hydroxide (Aj2 (
An activated carbon composition containing 12.6% by weight of OH) 3 ) was obtained.
調製例（３）
調製例（２）で得られた活性炭組成物５ｇを管状電気炉
中でチッソガスを１００ｍ２７分の割合で通しながら４
００°Ｃで２時間熱処理し、酸化アルミニウム（Ａ １
２０３ ） ９．１ 重１％を含有する活性炭組成物を
得た。Preparation Example (3) 5 g of the activated carbon composition obtained in Preparation Example (2) was heated in a tubular electric furnace for 4 hours while passing nitrogen gas through it at a rate of 100 m27 minutes.
After heat treatment at 00°C for 2 hours, aluminum oxide (A 1
203) 9.1 An activated carbon composition containing 1% by weight was obtained.
調製例（４）
１号ケイ酸ソーダ（Ｎａ２’Ｏ／Ｓ ｉＣｈ ＃ １
／２（モル比）〕の５％水溶液２０ｍβに粒度２８〜８
０メツシユの石炭系活性炭１０ｇを浸漬し、時々ガラス
製のヘラでかき混ぜながら１５０°Ｃで乾燥した。この
操作によりＮａ２０１モルに対し５ｉ０２約２モルから
なるケイ酸ソーダを９．１重量％含有する活性炭組成物
１１ｇを得た。Preparation Example (4) No. 1 Sodium Silicate (Na2'O/S iCh #1
/2 (molar ratio)] in a 5% aqueous solution of 20 mβ with a particle size of 28 to 8.
10 g of coal-based activated carbon of 0 mesh was soaked and dried at 150° C. while occasionally stirring with a glass spatula. By this operation, 11 g of an activated carbon composition containing 9.1% by weight of sodium silicate consisting of about 2 moles of 5i02 per 201 moles of Na was obtained.
調製例（５）
チタンテトラブトキシド（Ｔ ｉ （０（ＣＮ２ ）
３ＣＨ３）４ ）４．２６ｇにプロピルアルコールを
加え′／ｇ解して２０ ｍ （ｌとした後、これに石炭
系活性炭ｔｏｇを浸漬した。これをかき混ぜながら風乾
した１麦、湿度１００％に調湿したデシケータ中に約２
０時間放置した。次いでこれを２５０°Ｃに加熱し二酸
化チタン（Ｔ ｉ ０２ ）を９．１重量％含有する活
性炭組成物を得た。Preparation example (5) Titanium tetrabutoxide (T i (0(CN2)
3CH3)4) Added propyl alcohol to 4.26 g and dissolved it to make 20 m (l), and then immersed coal-based activated carbon tog in it. Approximately 2
It was left for 0 hours. Next, this was heated to 250°C to obtain an activated carbon composition containing 9.1% by weight of titanium dioxide (T i 02 ).
調製例（６）
アルミン酸ソーダ（Ｎ ａ２０／ Ａ Ｉ−ｚ ０３
＝ ２゜６ （モル比）〕の２．５％水溶液２０ｍｆに
粒度２８〜８０メソシユの石炭系活性炭１０ｇを浸漬し
、真空ポンプで減圧したデシケータ中に１時間保持した
。その後、１２０°Ｃに保った乾燥器内に１５時間保持
し水分を除去した。この操作により／’７２２０３１モ
ルに対しＮａｚＯが２．６モルから成るアルミン酸ソー
ダを４．８重量％含有する活性炭組成物１０．５ ｇを
得た。Preparation example (6) Sodium aluminate (Na20/AI-z 03
10 g of coal-based activated carbon having a particle size of 28 to 80 mS was immersed in 20 mf of a 2.5% aqueous solution of 2.5% aqueous solution (mole ratio) and held in a desiccator under reduced pressure with a vacuum pump for 1 hour. Thereafter, it was kept in a dryer kept at 120°C for 15 hours to remove moisture. This operation yielded 10.5 g of an activated carbon composition containing 4.8% by weight of sodium aluminate, which was composed of 2.6 moles of NazO based on /'722031 moles.
調製例（７）
リン酸三カリウム（Ｎ３ ＰＯ４）の２．５％水溶液２
０ｍ！！に粒度２８〜８０メツシユの石炭系活性炭Ｌｏ
ｇを浸漬し、時々ガラス製のヘラでかき混ぜながら１５
０℃で乾燥した。この操作によりに２０３／２モル、Ｐ
２０ｓ １ ／ ２ ％ルから成るリン酸カリウムを
４．８ｆｉｔｉｔ％含有する活性炭組成。Preparation example (7) 2.5% aqueous solution of tripotassium phosphate (N3 PO4) 2
0m! ! Coal-based activated carbon with a particle size of 28 to 80 mesh
Soak 15 g, stirring occasionally with a glass spatula.
It was dried at 0°C. This operation yields 203/2 mol, P
Activated carbon composition containing 4.8 fitit% of potassium phosphate consisting of 20s 1/2%.
物１０．５ ｇを得た。10.5 g of product was obtained.
上記ｌ！ｉｌ！！！例（１）〜（７）で得られた本発明
の活性炭組成物及び対照として用いた石炭系活性炭単体
について、Ｎ２吸着法によるＢ−Ｅ−Ｔ比表面積及び細
孔容積の測定を行ない、又、３．０℃におけ□るアセト
アルデヒド及び水分の平衡後ｉｆの測定を行なった。Above l! Il! ! ! The BET specific surface area and pore volume of the activated carbon compositions of the present invention obtained in Examples (1) to (7) and the coal-based activated carbon alone used as a control were measured by the N2 adsorption method, and After equilibration of acetaldehyde and water at 3.0° C., if was measured.
なお、アセトアルデヒドの吸着量の測定は以下の方法で
行なった。すなわち、アセトアルデヒド２．５容量％含
有するアセトアルデヒド−チッソ混合ガスを３０’Ｃに
保持した活性炭試料に密閉容器中で接触させ、吸着平衡
状態に達するまで２４時間この状態を保持し、活性炭試
料の重量変化から次式によりアセトアルデヒドの吸着量
を算出した。The amount of acetaldehyde adsorbed was measured by the following method. That is, an acetaldehyde-nitrogen mixed gas containing 2.5% by volume of acetaldehyde was brought into contact with an activated carbon sample maintained at 30'C in a closed container, this state was maintained for 24 hours until an adsorption equilibrium state was reached, and the weight of the activated carbon sample was From the change, the adsorption amount of acetaldehyde was calculated using the following formula.
吸着量（％）＝ 測定前の試料重量 又、水分後ｆｆｆｉは以下の方法で行なった。Adsorption amount (%) = Sample weight before measurement Further, fffi after moisture was performed in the following manner.
即ち、３０℃、相対湿度８０％に関節した恒温恒湿室に
乾燥試料を５日間保持し、重量変化から次式により平衡
水分吸着量を求めた。That is, the dried sample was kept in a constant temperature and humidity chamber at 30° C. and 80% relative humidity for 5 days, and the equilibrium water adsorption amount was determined from the weight change using the following equation.
水分吸着量（％）＝
なお、アセトアルデヒド吸着量の増加率は次式により算
出した。Moisture adsorption amount (%) = The rate of increase in the amount of acetaldehyde adsorption was calculated using the following formula.
Ｂ
Ａ：本発明による活性炭組成物のアセトアルデヒド吸着
量
Ｂ：対照活性炭のアセトアルデヒド吸着量これらの結果
を第１表に示した。B A: Acetaldehyde adsorption amount of the activated carbon composition according to the present invention B: Acetaldehyde adsorption amount of the control activated carbon These results are shown in Table 1.
第１表の結果から明らかなように、ｔＪｉｉｔ製例（１
）〜（７）の本発明の活性炭組成物は、いずれも対照の
石炭系活性炭に比し、比表面積及び細孔容積が共に減少
しており、このことは、活性炭表面及び／又は細孔内に
本発明に係る元素の酸化物又は水酸化物がコーティング
もしくは沈着されていることを示している。このような
状態の活性炭表面及び／又は細孔内壁は水分吸着量が対
照に比し増加していることから判るように極性を有する
親水性の高い状態となっており、アセトアルデヒドのよ
うな極性低分子有機化合物の吸着に有利な状態に改質さ
れたものと判断される。As is clear from the results in Table 1, tJiit manufacturing example (1
) to (7) of the activated carbon compositions of the present invention all have a reduced specific surface area and pore volume compared to the control coal-based activated carbon, which indicates that the activated carbon compositions on the activated carbon surface and/or in the pores are This shows that the oxide or hydroxide of the element according to the present invention is coated or deposited on the surface. The activated carbon surface and/or pore inner walls in this state are highly polar and hydrophilic, as seen from the increased amount of water adsorption compared to the control, and are highly polar and hydrophilic, such as acetaldehyde. It is considered that the material has been modified to be advantageous for adsorption of molecular organic compounds.
従って、アセトアルデヒド吸着量は対照の活性炭に比し
著しく増加し、その増加率は約１６〜６６％に達するこ
とが認められた。Therefore, it was observed that the amount of acetaldehyde adsorbed was significantly increased compared to the control activated carbon, and the increase rate reached approximately 16 to 66%.
以上詳細に説明したように、本発明の活性炭組成物によ
れば活性炭の表面及び／又は細孔表面が極性及び親水性
に改質され、常温においてもアセトアルデヒドを効果的
に吸着除去することができ、従ってこれをガスマスク、
空気清浄器あるいはたばこフィルター等に適用すること
により、従来の活性炭吸着剤に比し格段にすぐれたアセ
トアルデヒドの除去効果が得られるものである。As explained in detail above, according to the activated carbon composition of the present invention, the surface and/or pore surface of the activated carbon is modified to be polar and hydrophilic, and acetaldehyde can be effectively adsorbed and removed even at room temperature. , so use this as a gas mask,
By applying it to air purifiers, cigarette filters, etc., it is possible to obtain a far superior acetaldehyde removal effect compared to conventional activated carbon adsorbents.
特許出願人 トビーエ業株式会社 同 日本専売公社Patent applicant: Tobie Gyo Co., Ltd. The same Japan Monopoly Corporation
Claims (1)
I ＿Ａ族元素、マグネシウム、カルシウムからなる該表
第II＿Ａ族元素、ホウ素、アルミニウムからなる該表第
III＿Ｂ族元素、珪素、スズからなる該表第IV＿Ｂ族元
素、リンからなる該表第Ｖ＿Ｂ族元素、及びチタン、ジ
ルコニウム、銅からなる遷移元素から選ばれる元素の１
種又は２種以上の酸化物及び／又は水酸化物を活性炭の
表面及び／又は細孔内に形成させたことを特徴とする活
性炭組成物。Periodic table consisting of lithium, sodium and potassium
I_A group consisting of elements, magnesium and calcium II_A group consisting of elements boron and aluminum
1 of the elements selected from the group III_B elements of the table, the group IV_B elements of the table consisting of silicon and tin, the group V_B elements of the table consisting of phosphorus, and the transition elements consisting of titanium, zirconium and copper.
An activated carbon composition characterized in that a species or two or more kinds of oxides and/or hydroxides are formed on the surface and/or in the pores of activated carbon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59173124A JPS6154236A (en) | 1984-08-22 | 1984-08-22 | Activated carbon composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59173124A JPS6154236A (en) | 1984-08-22 | 1984-08-22 | Activated carbon composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6154236A true JPS6154236A (en) | 1986-03-18 |
| JPS6361055B2 JPS6361055B2 (en) | 1988-11-28 |
Family
ID=15954574
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59173124A Granted JPS6154236A (en) | 1984-08-22 | 1984-08-22 | Activated carbon composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6154236A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59142600A (en) * | 1983-02-04 | 1984-08-15 | カシオ計算機株式会社 | Touch response keyboard |
| EP1125631A3 (en) * | 2000-02-14 | 2001-09-12 | Isuzu Ceramics Research Institute Co., Ltd. | CO2 adsorbent |
| KR20020043946A (en) * | 2000-12-05 | 2002-06-12 | 이근석 | Oxidation catalyzer, method for fabricating the same, method for recycling the same, and method for treating waste water using the same |
| KR100451646B1 (en) * | 2000-01-05 | 2004-10-08 | 니폰 쇼쿠바이 컴파니 리미티드 | Catalyst for treating waste water, method for producing the catalyst and method for treating waste water |
| EP2412432A1 (en) | 2010-07-29 | 2012-02-01 | Sony Corporation | Nicotine Absorbent, Quinoline Absorbent, Benzopyrene Absorbent, Toluidine Absorbent, and Carcinogen Absorbent |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4838291A (en) * | 1971-09-20 | 1973-06-05 | ||
| JPS51137685A (en) * | 1975-05-23 | 1976-11-27 | Tatsugoro Onozawa | Carbonaceous deodorant |
-
1984
- 1984-08-22 JP JP59173124A patent/JPS6154236A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4838291A (en) * | 1971-09-20 | 1973-06-05 | ||
| JPS51137685A (en) * | 1975-05-23 | 1976-11-27 | Tatsugoro Onozawa | Carbonaceous deodorant |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59142600A (en) * | 1983-02-04 | 1984-08-15 | カシオ計算機株式会社 | Touch response keyboard |
| KR100451646B1 (en) * | 2000-01-05 | 2004-10-08 | 니폰 쇼쿠바이 컴파니 리미티드 | Catalyst for treating waste water, method for producing the catalyst and method for treating waste water |
| EP1125631A3 (en) * | 2000-02-14 | 2001-09-12 | Isuzu Ceramics Research Institute Co., Ltd. | CO2 adsorbent |
| KR20020043946A (en) * | 2000-12-05 | 2002-06-12 | 이근석 | Oxidation catalyzer, method for fabricating the same, method for recycling the same, and method for treating waste water using the same |
| EP2412432A1 (en) | 2010-07-29 | 2012-02-01 | Sony Corporation | Nicotine Absorbent, Quinoline Absorbent, Benzopyrene Absorbent, Toluidine Absorbent, and Carcinogen Absorbent |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6361055B2 (en) | 1988-11-28 |
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