JPH0557129A - Adsorbing and desorbing agent for moisture conditioning agent and production thereof - Google Patents
Adsorbing and desorbing agent for moisture conditioning agent and production thereofInfo
- Publication number
- JPH0557129A JPH0557129A JP22308791A JP22308791A JPH0557129A JP H0557129 A JPH0557129 A JP H0557129A JP 22308791 A JP22308791 A JP 22308791A JP 22308791 A JP22308791 A JP 22308791A JP H0557129 A JPH0557129 A JP H0557129A
- Authority
- JP
- Japan
- Prior art keywords
- silica gel
- calcium chloride
- humidity control
- pore volume
- agent
- 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.)
- Granted
Links
Landscapes
- Drying Of Gases (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は調湿剤用吸脱着剤及びそ
の製造方法に関するもので、詳しくは塩化カルシウムを
担持させて吸湿性能を高めた調湿剤用吸脱着剤及びその
製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an adsorbent / desorbent for humidity control agents and a method for producing the same, and more particularly, to an adsorbent / desorbent agent for humidity control agents having calcium chloride supported thereon to enhance its hygroscopicity and a method for producing the same. ..
【０００２】[0002]
【従来の技術】従来、石綿、活性炭、ゼオライト、活性
白土、シリカゲル等にハロゲン化リチウムを担持させた
調湿剤用吸脱着剤が知られている。特に、特開昭５７−
１６５０３３には、細孔容積が０．５〜０．８５ｍｌ／
ｇのシリカゲルに例えば塩化リチウムのようなハロゲン
化リチウムを担持させた後、シリカゲル表面付近のハロ
ゲン化リチウムを除去した調湿剤用吸脱着剤が記載され
ている。この調湿剤用吸脱着剤は、低湿から高湿に至る
吸着容量差が大きく優れた調湿性能を示す上に、ハロゲ
ン化リチウムを担持させた調湿剤によくみられる潮解性
を示さず、周囲に水害を及ぼす恐れが無い。そのため、
特に工芸美術品などの保存に使用されていた。2. Description of the Related Art Up to now, an adsorbent / desorbent for humidity control agents in which asbestos, activated carbon, zeolite, activated clay, silica gel and the like are loaded with lithium halide is known. Particularly, JP-A-57-
165033 has a pore volume of 0.5 to 0.85 ml /
An adsorbent / desorbent for humidity control agents is described in which lithium halide such as lithium chloride is supported on g of silica gel and then the lithium halide near the surface of the silica gel is removed. This adsorbent / desorbent for humidity control agents has a large adsorption capacity difference from low humidity to high humidity and exhibits excellent humidity control performance, and it does not exhibit the deliquescent property often seen in lithium halide-supported humidity control agents. , There is no risk of water damage to the surroundings. for that reason,
It was especially used for the preservation of crafts and art.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、特開昭
５７−１６５０３３に記載の調湿剤用吸脱着剤では、更
に優れた調湿性能を得ようとして細孔容積の大きなシリ
カゲルを用いると、シリカゲル表面付近の塩化リチウム
を除去したにもかかわらず潮解性を示すといった問題点
があった。更に、ハロゲン化リチウムは一般的に高価で
あり、製造コストが高くなるといった問題点があった。However, in the adsorbent / desorbent for humidity control agents described in JP-A-57-165033, when silica gel having a large pore volume is used in order to obtain more excellent humidity control performance, There was a problem that it showed deliquescent even though the lithium chloride near the surface was removed. Further, lithium halides are generally expensive, and there is a problem that the manufacturing cost is high.
【０００４】本発明は上記課題を解決し、優れた調湿性
能を示し、使用時に潮解性を示すことがないような安価
な調湿剤用吸脱着剤及びその製造方法を提供することを
目的とする。An object of the present invention is to solve the above problems and to provide an inexpensive adsorbent / desorbent for humidity control agents, which exhibits excellent humidity control performance and does not exhibit deliquescent properties during use, and a method for producing the same. And
【０００５】[0005]
【課題を解決するための手段及び作用】本発明の調湿剤
用吸脱着剤は、細孔容積が０．５０〜１．３０ｍｌ／ｇ
のシリカゲルに、塩化カルシウムを３〜２５重量％担持
させ、更にシリカゲル表面付近の塩化カルシウムを除去
してなることを要旨とする。Means and Actions for Solving the Problems The adsorption / desorption agent for humidity control agents of the present invention has a pore volume of 0.50 to 1.30 ml / g.
The gist of the present invention is that 3 to 25% by weight of calcium chloride is supported on the silica gel, and calcium chloride near the surface of the silica gel is removed.
【０００６】本発明の調湿剤用吸脱着剤に使用するシリ
カゲルは、細孔容積が０．５０〜１．３０ｍｌ／ｇのも
のであれば、球状タイプの物でも破砕タイプの物でもい
ずれを用いてもよく、例えば富士デヴィソン化学（株）
社製のＩＤ型シリカゲルであるキャリアクトー１０（粒
径８ｍｅｓｈ，細孔容積１．０５ｍｌ／ｇ，表面積３２
０ｍ２／ｇ）が使用可能である。細孔容積が０．５０ｍ
ｌ／ｇより小さい場合、充分な量の塩化カルシウムを担
持させることが出来ず、良い調湿効果が得られない。細
孔容積が１．３０ｍｌ／ｇより大きい場合、シリカゲル
の吸着容量が担持させた塩化カルシウム量に比べて乏し
く、潮解性を示すという問題が生じる。また、塩化カル
シウムの担持量は、担持後の全体重量に対して３〜２５
重量％である必要がある。塩化カルシウムの担持量が３
重量％以下である場合、シリカゲルに塩化カルシウムを
担持させたことによって生じる調湿効果の向上が乏し
い。また、塩化カルシウムの担持量が２５重量％以上で
ある場合、シリカゲルの吸着容量が担持させた塩化カル
シウム量に比べて乏しく、潮解性を示すという問題を生
じる。塩化カルシウムの担持量が１０〜２０重量％であ
ると、更に良い調湿効果が得られ、好ましい。The silica gel used in the adsorbent / desorbent for humidity control agents of the present invention may be spherical type or crushed type as long as it has a pore volume of 0.50 to 1.30 ml / g. It may be used, for example, Fuji Davison Chemical Co., Ltd.
Carrier Tact 10 (particle size 8 mesh, pore volume 1.05 ml / g, surface area 32)
0 m2 / g) can be used. Pore volume is 0.50m
If it is less than 1 / g, a sufficient amount of calcium chloride cannot be supported and a good humidity control effect cannot be obtained. When the pore volume is larger than 1.30 ml / g, the adsorption capacity of silica gel is insufficient as compared with the amount of supported calcium chloride, and the problem of deliquescent occurs. The amount of calcium chloride loaded is 3 to 25 relative to the total weight after loading.
Must be% by weight. The loading amount of calcium chloride is 3
When the content is less than 5% by weight, the improvement of the humidity control effect caused by supporting calcium chloride on silica gel is poor. Further, when the amount of calcium chloride supported is 25% by weight or more, the adsorption capacity of silica gel is insufficient as compared with the amount of calcium chloride supported, and the problem of deliquescent occurs. When the supported amount of calcium chloride is 10 to 20% by weight, a better humidity control effect can be obtained, which is preferable.
【０００７】また、上記シリカゲルにおいて、特に細孔
容積が０．９０〜１．３０ｍｌ／ｇで且つ表面積が２０
０〜４００ｍ2／ｇであるものを用いると、塩化カルシ
ウムの担持量が増加し、良い調湿効果が得られる。更に
本発明の調湿剤用吸脱着剤の製造方法は、細孔容積が
０．５０〜１．３０ｍｌ／ｇのシリカゲルを、塩化カル
シウムの２５〜５０重量％水溶液に浸漬させ、しかるの
ち水処理を施してシリカゲル表面付近の過剰の塩化カル
シウムを除去した後、乾燥させることを要旨とする。In the silica gel, the pore volume is 0.90 to 1.30 ml / g and the surface area is 20.
When the amount of 0 to 400 m 2 / g is used, the amount of calcium chloride supported increases, and a good humidity control effect can be obtained. Furthermore, the method for producing an adsorbent / desorbent for humidity control agents of the present invention is to immerse silica gel having a pore volume of 0.50 to 1.30 ml / g in a 25 to 50 wt% aqueous solution of calcium chloride, followed by water treatment. After removing excess calcium chloride in the vicinity of the surface of the silica gel, the drying is performed.
【０００８】シリカゲルは前述の物を用い、それを塩化
カルシウムの２５〜５０重量％水溶液に浸漬させる。塩
化カルシウム水溶液の濃度が２５〜５０重量％の範囲外
であると、適正な塩化カルシウムの担持量が得られな
い。また、シリカゲルは３０分〜２時間程度塩化カルシ
ウム水溶液に浸漬して、塩化カルシウムを充分に浸透さ
せることが好ましい。この後、シリカゲルを塩化カルシ
ウム水溶液から取り出して、水処理によってシリカゲル
表面付近の過剰の塩化カルシウムを除去する。水処理と
は例えば以下のように行う。即ち、先ほどの塩化カルシ
ウム水溶液から取り出したシリカゲルを、乾燥させずに
そのまま水中に２０〜６０分間静置する。水中に２０〜
６０分間静置する代わりに、１分間ほど攪拌してもよ
い。その後シリカゲルを水から取り出し、脱水して１０
０〜２００℃で乾燥する。The above-mentioned silica gel is used, and it is immersed in a 25 to 50% by weight aqueous solution of calcium chloride. If the concentration of the aqueous calcium chloride solution is out of the range of 25 to 50% by weight, an appropriate amount of supported calcium chloride cannot be obtained. Further, it is preferable that the silica gel is immersed in a calcium chloride aqueous solution for about 30 minutes to 2 hours to sufficiently permeate calcium chloride. After that, the silica gel is taken out from the calcium chloride aqueous solution, and excess calcium chloride near the surface of the silica gel is removed by water treatment. Water treatment is performed as follows, for example. That is, the silica gel taken out from the calcium chloride aqueous solution is allowed to stand in water for 20 to 60 minutes without being dried. 20 to underwater
Instead of standing for 60 minutes, stirring may be performed for about 1 minute. Then remove the silica gel from the water and dehydrate it to 10
Dry at 0-200 ° C.
【０００９】尚、上記調湿剤用吸脱着剤の製造方法にお
いて、シリカゲルを塩化カルシウム水溶液に浸漬した時
に粒子の破壊が生じないように、予めシリカゲルに含水
前処理を施しておくことも可能である。含水量の少ない
シリカゲルを塩化カルシウム水溶液に直接浸漬すると粒
子が細かく割れてしまい、これに塩化カルシウムを担持
させた物は、関係湿度が５０％以上で飽和吸湿した時潮
解現象が現れるといった問題がある。このため、本発明
の調湿剤用吸脱着剤の製造方法においては、含水量が多
い（細孔容積の８０％以上）シリカゲルを使用するか、
予めシリカゲルに含水前処理を施したものを使用する。
この含水前処理は、以下のようにして行なうとよい。即
ち、例えばＩＤ型球状シリカゲル（富士デヴィソン
（株）社製）の粒径２０メッシュ以上の物を、粒径が３
０〜２００メッシュのシリカゲルであるマイクロビーズ
５Ｄ（富士デヴィソン（株）社製、細孔容積１．２ｍｌ
／ｇ）に水を加えてよく混合した物と配合し、数十分間
静置する。すると、マイクロビーズ５Ｄ中の水分がＩＤ
型球状シリカゲル中に徐々に移行する。次にこの配合物
をふるいにかけて、ＩＤ型球状シリカゲルとマイクロビ
ーズ５Ｄとに分け、マイクロビーズ５Ｄには再度水を加
えて混合し、ふるい分けた前記ＩＤ型球状シリカゲルと
再度配合して静置する。以下この操作を数回繰り返す
と、ＩＤ型球状シリカゲルの含水率が任意の値例えば６
５重量％に達する。このような含水前処理を行うと、塩
化カルシウム水溶液に直接浸漬しても粒子の破壊はなく
なる。In the method for producing the adsorbent / desorbent for humidity control agents described above, it is possible to pretreat the silica gel in advance so as to prevent the particles from being broken when the silica gel is immersed in an aqueous calcium chloride solution. is there. When silica gel with a low water content is directly immersed in an aqueous solution of calcium chloride, the particles are broken into small pieces, and the material supporting calcium chloride has a problem that a deliquescent phenomenon appears when saturated humidity is absorbed at a relative humidity of 50% or more. .. Therefore, in the method for producing the adsorption / desorption agent for humidity control agents of the present invention, silica gel having a large water content (80% or more of the pore volume) is used,
Use silica gel that has been pretreated with water.
This water-containing pretreatment may be performed as follows. That is, for example, an ID type spherical silica gel (manufactured by Fuji Davison Co., Ltd.) having a particle size of 20 mesh or more is used.
Micro beads 5D, 0-200 mesh silica gel (manufactured by Fuji Devison Co., Ltd., pore volume 1.2 ml)
/ G) with water and mixed well, and leave still for several tens of minutes. Then, the water content in the microbeads 5D becomes ID.
Gradually migrate into spherical silica gel. Next, this compound is sifted and divided into ID type spherical silica gel and microbeads 5D. Water is added to the microbeads 5D again to mix, and the ID type spherical silica gel that has been sieved is blended again and left to stand. When this operation is repeated several times, the water content of the ID type spherical silica gel becomes an arbitrary value, for example, 6
Reach 5% by weight. When such a hydrous pretreatment is carried out, the particles will not be broken even if they are directly immersed in the calcium chloride aqueous solution.
【００１０】本発明により、優れた調湿性能を示し、使
用時に潮解性を示すことがないような安価な調湿剤用吸
脱着剤及びその製造方法を提供することができるのは、
以下の理由によるものである。即ち、本発明によれば、
細孔容積が大きく吸着量の大きなシリカゲルに塩化カル
シウムを担持させたため、吸着容量が大きく優れた調湿
性能を示す。その上、水処理によってシリカゲル表面付
近の塩化カルシウムを除去してあるため、潮解性を示さ
ない。また、塩化リチウムを細孔容積の大きなシリカゲ
ルに担持させた場合、水処理を施した後も潮解性を示す
が、塩化カルシウムを用いた場合は潮解性を示さない原
因については以下のように推測される。即ち、塩化リチ
ウムは、塩化カルシウムに比べてその飽和溶液の水蒸気
圧が低く、小量でも多くの水分を吸収し潮解を起こし易
い。このため、塩化リチウムを細孔容積の大きなシリカ
ゲルに多量に担持させた場合、潮解性のコントロールが
困難となり、水処理を施した後も潮解性を示すものと考
えられる。また、塩化カルシウムは、ハロゲン化リチウ
ムよりも安価であるため、製造コストの低減も図れる。According to the present invention, it is possible to provide an inexpensive adsorbent / desorbent for humidity control agents which exhibits excellent humidity control performance and does not exhibit deliquescent properties during use, and a method for producing the same.
The reason is as follows. That is, according to the present invention,
Since silica gel having a large pore volume and a large adsorption amount is loaded with calcium chloride, it has a large adsorption capacity and exhibits excellent humidity control performance. In addition, it does not show deliquescent because calcium chloride near the surface of silica gel is removed by water treatment. In addition, when lithium chloride is supported on silica gel with a large pore volume, it shows deliquescent after water treatment, but when calcium chloride is used, the reason why it does not show deliquescent is estimated as follows. To be done. That is, lithium chloride has a lower water vapor pressure of its saturated solution than calcium chloride, and absorbs a large amount of water even in a small amount, and is easily deliquescent. Therefore, when a large amount of lithium chloride is supported on silica gel having a large pore volume, it is difficult to control the deliquescent property, and it is considered that the deliquescent property is exhibited even after water treatment. Further, since calcium chloride is cheaper than lithium halide, the manufacturing cost can be reduced.
【００１１】[0011]
【実施例】以上説明した本発明の構成・作用を一層明ら
かにするために、以下本発明の好適な実施例について説
明する。 ＜実施例１＞富士デヴィソン（株）社製球状シリカゲル
であるキャリアクトー１０（細孔容積１．０５ｍｌ／
ｇ，表面積３２０ｍ2／ｇ，粒径８ｍｅｓｈ）１０ｇを
４０重量％の塩化カルシウム水溶液１００ｍｌに含浸さ
せ、２時間経過後に取り出し、その後水３０ｍｌに１分
間浸漬攪拌する。これを水切りした後、１８０℃にて一
夜乾燥した。塩化カルシウムの担持量は１６．９重量％
となった。このシリカゲルについて、温度２５℃におい
て関係湿度５％，２０％，６０％，９０％について４８
時間後の飽和吸着容量（重量％）を測定した。測定結果
を表１に示す。また、高湿度状態で飽和させた後、上記
各関係湿度雰囲気に湿度を低下させることにより、脱着
によるデータも測定した。その結果を表２に示す。 ＜実施例２＞実施例１の球状シリカゲルの代わりに破砕
タイプのシリカゲル（細孔容積１．０７ｍｌ／ｇ，表面
積３２７ｍ2／ｇ）を使用して、実施例１と同様の方法
にて塩化カルシウムを担持させた。塩化カルシウムの担
持量は１３．１重量％となった。このシリカゲルについ
て、実施例１と同様に飽和吸着容量（重量％）を測定し
た。測定結果を表１に示す。 ＜比較例１＞実施例１と同じ球状シリカゲルの塩化カル
シウムを担持させていない物を用い、実施例１と同様に
飽和吸着容量（重量％）を測定した。測定結果を表１に
示す。 ＜比較例２＞特開昭５７−１６５０３３の実施例２（細
孔容積０．８ｍｌ／ｇのシリカゲルに塩化リチウムを
５．５重量％担持させた。）と同じ操作を行い、温度２
５℃において関係湿度２０％，５０％，９０％について
４８時間後の飽和吸着容量を測定した。測定結果を表１
に示す。Preferred embodiments of the present invention will be described below in order to further clarify the constitution and operation of the present invention described above. <Example 1> Spherical silica gel made by Fuji Davison Co., Ltd. Carrier Tact 10 (pore volume 1.05 ml /
g, surface area 320 m 2 / g, particle size 8 mesh) 10 g are impregnated in 100 ml of 40 wt% calcium chloride aqueous solution, taken out after 2 hours, and then immersed in 30 ml of water for 1 minute and stirred. This was drained and then dried overnight at 180 ° C. Calcium chloride loading is 16.9% by weight
Became. Regarding this silica gel, at a temperature of 25 ° C., the relative humidity is 5%, 20%, 60%, and 90%.
The saturated adsorption capacity (% by weight) after the lapse of time was measured. The measurement results are shown in Table 1. In addition, after saturating in a high humidity state, the humidity due to each of the above related humidity atmospheres was lowered to measure the data by desorption. The results are shown in Table 2. Example 2 In place of the spherical silica gel of Example 1, crushed type silica gel (pore volume 1.07 ml / g, surface area 327 m 2 / g) was used, and calcium chloride was prepared in the same manner as in Example 1. Was carried. The loaded amount of calcium chloride was 13.1% by weight. The saturated adsorption capacity (% by weight) of this silica gel was measured in the same manner as in Example 1. The measurement results are shown in Table 1. Comparative Example 1 The saturated adsorption capacity (wt%) was measured in the same manner as in Example 1 using the same spherical silica gel as in Example 1 which does not support calcium chloride. The measurement results are shown in Table 1. <Comparative Example 2> The same operation as in Example 2 of JP-A-57-165033 (5.5 wt% of lithium chloride supported on silica gel having a pore volume of 0.8 ml / g) was carried out at a temperature of 2.
The saturated adsorption capacity after 48 hours was measured at 5 ° C. for relative humidity of 20%, 50% and 90%. Table 1 shows the measurement results
Shown in.
【００１２】[0012]
【表１】 [Table 1]
【００１３】[0013]
【表２】 [Table 2]
【００１４】実施例１及び２、比較例２のいずれについ
ても、潮解現象はみられなかった。表１に示された結果
からも明らかなように、実施例１及び２の双方につい
て、比較例１の塩化カルシウムを担持しない例と比較し
て飽和吸着容量が大きく、また、低湿度から高湿度まで
の飽和吸着容量の差も大きく、優れた調湿性能を有して
いることがわかる。更に、実施例１は比較例２と比べて
さほど劣らぬ飽和吸着容量を有し、実施例２は比較例２
よりも優れた飽和吸着容量を有していることがわかる。No deliquescent phenomenon was observed in any of Examples 1 and 2 and Comparative Example 2. As is clear from the results shown in Table 1, in both Examples 1 and 2, the saturated adsorption capacity was larger than that of Comparative Example 1 in which calcium chloride was not supported, and the humidity was low to high. There is a large difference in the saturated adsorption capacity up to, and it can be seen that it has excellent humidity control performance. Furthermore, Example 1 has a saturated adsorption capacity that is not inferior to Comparative Example 2, and Example 2 is Comparative Example 2.
It can be seen that it has a better saturated adsorption capacity than that.
【００１５】また、表２の脱着によるデータも、表１の
実施例１の吸着によるデータとほとんど同一の値である
ことから、吸脱着のヒステリシスが非常に少なく、迅速
な応答性が存在することが判る。実施例１及び２におい
て、塩化カルシウムの担持量は比較例２の塩化リチウム
の担持量（５．５重量％）に比べて高々３倍程度であ
り、塩化カルシウムの単価が塩化リチウムに比べ安いこ
とから、より安価にて優れた調湿性能の調湿剤用吸脱着
剤を提供できることがわかる。Since the data obtained by desorption in Table 2 are almost the same as the data obtained by adsorption in Example 1 in Table 1, the adsorption / desorption hysteresis is very small and a rapid response exists. I understand. In Examples 1 and 2, the carried amount of calcium chloride was about 3 times as much as the carried amount of lithium chloride (5.5 wt%) of Comparative Example 2, and the unit price of calcium chloride was lower than that of lithium chloride. From the above, it can be seen that it is possible to provide a cheaper and more adsorbent / desorbent for humidity control agents with excellent humidity control performance.
【００１６】尚、ハロゲン化リチウムを、塩化カルシウ
ムの代わりに用いて、実施例１，２と同様の方法でシリ
カゲルに担持させた場合には、潮解現象を示した。上述
のように、本実施例によれば、優れた調湿性能を示し、
使用時に潮解性を示すことがないような安価な調湿剤用
吸脱着剤及びその製造方法を提供することができる。When lithium halide was used in place of calcium chloride and supported on silica gel in the same manner as in Examples 1 and 2, deliquescent phenomenon was exhibited. As described above, according to this example, excellent humidity control performance is exhibited,
It is possible to provide an inexpensive adsorption / desorption agent for humidity control agents that does not exhibit deliquescent properties when used and a method for producing the same.
【００１７】以上本発明の実施例について説明したが、
本発明はこうした実施例に何等限定されるものではな
く、本発明の要旨を逸脱しない範囲において、種々なる
態様で実施し得ることは勿論である。The embodiment of the present invention has been described above.
The present invention is not limited to these examples, and it goes without saying that the present invention can be implemented in various modes without departing from the scope of the present invention.
【００１８】[0018]
【発明の効果】以上詳述したように、本発明の調湿剤用
吸脱着剤及びその製造方法によれば、優れた調湿性能を
示し、使用時に潮解性を示すことがないような安価な調
湿剤用吸脱着剤及びその製造方法を提供することができ
る。As described above in detail, according to the adsorbent / desorbent for humidity control agents and the method for producing the same of the present invention, it is possible to obtain excellent humidity control performance and to prevent deliquescent at the time of use at a low cost. It is possible to provide a different adsorption / desorption agent for humidity control agents and a method for producing the same.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 山田 五郎 愛媛県西宇和郡保内町川之石７−131−３ 富士デヴイソン化学株式会社愛媛工場内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Goro Yamada 7-131-3 Kawanoishi, Honai-cho, Nishiuwa-gun, Ehime Prefecture Fuji Devison Chemical Co., Ltd. Ehime Plant
Claims (4)
のシリカゲルに、塩化カルシウムを３〜２５重量％担持
させ、更にシリカゲル表面付近の塩化カルシウムを除去
してなることを特徴とする調湿剤用吸脱着剤。1. A pore volume of 0.50 to 1.30 ml / g
Adsorbing and desorbing agents for humidity control agents, characterized in that 3 to 25% by weight of calcium chloride is supported on the silica gel of, and calcium chloride near the surface of the silica gel is removed.
９０〜１．３０ｍｌ／ｇで且つ表面積が２００〜４００
ｍ2／ｇのシリカゲルを用いることを特徴とした、請求
項１記載の調湿剤用吸脱着剤。2. The silica gel having a pore volume of 0.
90-1.30 ml / g and surface area 200-400
and characterized by using silica gel m 2 / g, desorption agents for humidity control agent according to claim 1.
のシリカゲルを、塩化カルシウムの２５〜５０重量％水
溶液に浸漬させ、しかるのち水処理を施してシリカゲル
表面付近の過剰の塩化カルシウムを除去した後、乾燥さ
せることを特徴とする調湿剤用吸脱着剤の製造方法。3. Pore volume of 0.50 to 1.30 ml / g
The silica gel of 1. is immersed in an aqueous solution of 25 to 50% by weight of calcium chloride, and then subjected to water treatment to remove excess calcium chloride in the vicinity of the surface of the silica gel, followed by drying. Method of manufacturing agent.
に浸漬した時に粒子の破壊が生じないように、予めシリ
カゲルに含水前処理を施しておくことを特徴とする請求
項３記載の調湿剤用吸脱着剤の製造方法。4. The adsorption / desorption for humidity control agent according to claim 3, wherein the silica gel is preliminarily subjected to a hydrous pretreatment so that the silica gel is not soaked in an aqueous solution of calcium chloride so as not to be broken. Method of manufacturing agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22308791A JP3237873B2 (en) | 1991-09-03 | 1991-09-03 | Adsorbent / desorbent for humidity control and method for producing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22308791A JP3237873B2 (en) | 1991-09-03 | 1991-09-03 | Adsorbent / desorbent for humidity control and method for producing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0557129A true JPH0557129A (en) | 1993-03-09 |
| JP3237873B2 JP3237873B2 (en) | 2001-12-10 |
Family
ID=16792639
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22308791A Expired - Fee Related JP3237873B2 (en) | 1991-09-03 | 1991-09-03 | Adsorbent / desorbent for humidity control and method for producing the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3237873B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007119416A1 (en) * | 2006-04-06 | 2007-10-25 | Shanghai Jiaotong University | Desiccant device having metal halide and process for producing the same |
| JP2009226265A (en) * | 2008-03-19 | 2009-10-08 | Univ Waseda | Water selectivity adsorbent and manufacturing method |
| JP2011041917A (en) * | 2009-08-21 | 2011-03-03 | Osaka Gas Co Ltd | Water-absorbing sheet and method of manufacturing the same |
| JP2011212674A (en) * | 2010-03-19 | 2011-10-27 | Osaka Gas Co Ltd | Water-absorbing material composition and water-absorbing sheet |
-
1991
- 1991-09-03 JP JP22308791A patent/JP3237873B2/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007119416A1 (en) * | 2006-04-06 | 2007-10-25 | Shanghai Jiaotong University | Desiccant device having metal halide and process for producing the same |
| JP5356019B2 (en) * | 2006-04-06 | 2013-12-04 | 上海交通大学 | Desiccant device having metal halide salt and method for producing the same |
| JP2009226265A (en) * | 2008-03-19 | 2009-10-08 | Univ Waseda | Water selectivity adsorbent and manufacturing method |
| JP2011041917A (en) * | 2009-08-21 | 2011-03-03 | Osaka Gas Co Ltd | Water-absorbing sheet and method of manufacturing the same |
| JP2011212674A (en) * | 2010-03-19 | 2011-10-27 | Osaka Gas Co Ltd | Water-absorbing material composition and water-absorbing sheet |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3237873B2 (en) | 2001-12-10 |
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