JPH0513694B2 - - Google Patents
Info
- Publication number
- JPH0513694B2 JPH0513694B2 JP60117326A JP11732685A JPH0513694B2 JP H0513694 B2 JPH0513694 B2 JP H0513694B2 JP 60117326 A JP60117326 A JP 60117326A JP 11732685 A JP11732685 A JP 11732685A JP H0513694 B2 JPH0513694 B2 JP H0513694B2
- Authority
- JP
- Japan
- Prior art keywords
- adsorbent
- silica alumina
- alumina gel
- acid
- changes
- 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
Links
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 61
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 33
- 239000003463 adsorbent Substances 0.000 claims description 32
- 239000000377 silicon dioxide Substances 0.000 claims description 30
- 239000002253 acid Substances 0.000 claims description 18
- 239000000126 substance Substances 0.000 claims description 13
- 239000000499 gel Substances 0.000 description 33
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 32
- 239000007789 gas Substances 0.000 description 19
- 229910021529 ammonia Inorganic materials 0.000 description 16
- 238000001179 sorption measurement Methods 0.000 description 15
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 12
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 8
- 239000007864 aqueous solution Substances 0.000 description 8
- 238000005470 impregnation Methods 0.000 description 8
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 7
- 235000019504 cigarettes Nutrition 0.000 description 7
- 229910004298 SiO 2 Inorganic materials 0.000 description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 6
- 229910052782 aluminium Inorganic materials 0.000 description 6
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 6
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 5
- 235000019832 sodium triphosphate Nutrition 0.000 description 5
- UNXRWKVEANCORM-UHFFFAOYSA-I triphosphate(5-) Chemical compound [O-]P([O-])(=O)OP([O-])(=O)OP([O-])([O-])=O UNXRWKVEANCORM-UHFFFAOYSA-I 0.000 description 5
- 150000007513 acids Chemical class 0.000 description 4
- 230000007423 decrease Effects 0.000 description 4
- 238000001035 drying Methods 0.000 description 4
- CEQFOVLGLXCDCX-WUKNDPDISA-N methyl red Chemical compound C1=CC(N(C)C)=CC=C1\N=N\C1=CC=CC=C1C(O)=O CEQFOVLGLXCDCX-WUKNDPDISA-N 0.000 description 4
- 239000000779 smoke Substances 0.000 description 4
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 3
- 150000001412 amines Chemical class 0.000 description 3
- VZCYOOQTPOCHFL-OWOJBTEDSA-N Fumaric acid Chemical compound OC(=O)\C=C\C(O)=O VZCYOOQTPOCHFL-OWOJBTEDSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000002845 discoloration Methods 0.000 description 2
- XJRPTMORGOIMMI-UHFFFAOYSA-N ethyl 2-amino-4-(trifluoromethyl)-1,3-thiazole-5-carboxylate Chemical compound CCOC(=O)C=1SC(N)=NC=1C(F)(F)F XJRPTMORGOIMMI-UHFFFAOYSA-N 0.000 description 2
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 150000007522 mineralic acids Chemical class 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 150000007524 organic acids Chemical class 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- PRZSXZWFJHEZBJ-UHFFFAOYSA-N thymol blue Chemical compound C1=C(O)C(C(C)C)=CC(C2(C3=CC=CC=C3S(=O)(=O)O2)C=2C(=CC(O)=C(C(C)C)C=2)C)=C1C PRZSXZWFJHEZBJ-UHFFFAOYSA-N 0.000 description 2
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 2
- OYCLSQDXZMROJK-UHFFFAOYSA-N 2-bromo-4-[3-(3-bromo-4-hydroxyphenyl)-1,1-dioxo-2,1$l^{6}-benzoxathiol-3-yl]phenol Chemical compound C1=C(Br)C(O)=CC=C1C1(C=2C=C(Br)C(O)=CC=2)C2=CC=CC=C2S(=O)(=O)O1 OYCLSQDXZMROJK-UHFFFAOYSA-N 0.000 description 1
- JCYPECIVGRXBMO-UHFFFAOYSA-N 4-(dimethylamino)azobenzene Chemical compound C1=CC(N(C)C)=CC=C1N=NC1=CC=CC=C1 JCYPECIVGRXBMO-UHFFFAOYSA-N 0.000 description 1
- ZPLCXHWYPWVJDL-UHFFFAOYSA-N 4-[(4-hydroxyphenyl)methyl]-1,3-oxazolidin-2-one Chemical compound C1=CC(O)=CC=C1CC1NC(=O)OC1 ZPLCXHWYPWVJDL-UHFFFAOYSA-N 0.000 description 1
- OLQIKGSZDTXODA-UHFFFAOYSA-N 4-[3-(4-hydroxy-2-methylphenyl)-1,1-dioxo-2,1$l^{6}-benzoxathiol-3-yl]-3-methylphenol Chemical compound CC1=CC(O)=CC=C1C1(C=2C(=CC(O)=CC=2)C)C2=CC=CC=C2S(=O)(=O)O1 OLQIKGSZDTXODA-UHFFFAOYSA-N 0.000 description 1
- 235000013162 Cocos nucifera Nutrition 0.000 description 1
- 244000060011 Cocos nucifera Species 0.000 description 1
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 description 1
- BELBBZDIHDAJOR-UHFFFAOYSA-N Phenolsulfonephthalein Chemical compound C1=CC(O)=CC=C1C1(C=2C=CC(O)=CC=2)C2=CC=CC=C2S(=O)(=O)O1 BELBBZDIHDAJOR-UHFFFAOYSA-N 0.000 description 1
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 1
- KDYFGRWQOYBRFD-UHFFFAOYSA-N Succinic acid Natural products OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 description 1
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000007900 aqueous suspension Substances 0.000 description 1
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 1
- 239000004327 boric acid Substances 0.000 description 1
- 235000010338 boric acid Nutrition 0.000 description 1
- ABIUHPWEYMSGSR-UHFFFAOYSA-N bromocresol purple Chemical compound BrC1=C(O)C(C)=CC(C2(C3=CC=CC=C3S(=O)(=O)O2)C=2C=C(Br)C(O)=C(C)C=2)=C1 ABIUHPWEYMSGSR-UHFFFAOYSA-N 0.000 description 1
- KDYFGRWQOYBRFD-NUQCWPJISA-N butanedioic acid Chemical compound O[14C](=O)CC[14C](O)=O KDYFGRWQOYBRFD-NUQCWPJISA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000001877 deodorizing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000001530 fumaric acid Substances 0.000 description 1
- 235000011087 fumaric acid Nutrition 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- RSAZYXZUJROYKR-UHFFFAOYSA-N indophenol Chemical compound C1=CC(O)=CC=C1N=C1C=CC(=O)C=C1 RSAZYXZUJROYKR-UHFFFAOYSA-N 0.000 description 1
- 239000004310 lactic acid Substances 0.000 description 1
- 235000014655 lactic acid Nutrition 0.000 description 1
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 1
- 239000011976 maleic acid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- STZCRXQWRGQSJD-GEEYTBSJSA-M methyl orange Chemical compound [Na+].C1=CC(N(C)C)=CC=C1\N=N\C1=CC=C(S([O-])(=O)=O)C=C1 STZCRXQWRGQSJD-GEEYTBSJSA-M 0.000 description 1
- 229940012189 methyl orange Drugs 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 235000006408 oxalic acid Nutrition 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 239000007793 ph indicator Substances 0.000 description 1
- 229960003531 phenolsulfonphthalein Drugs 0.000 description 1
- 235000011007 phosphoric acid Nutrition 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 235000002906 tartaric acid Nutrition 0.000 description 1
- 239000011975 tartaric acid Substances 0.000 description 1
- -1 that is Inorganic materials 0.000 description 1
Landscapes
- Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
- Treating Waste Gases (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Description
【発明の詳細な説明】
産業上の利用分野
本発明は塩基性ガス吸着剤、さらに詳しくは、
吸着能を表示する手段を有し、それにより、吸着
能の低下を知り、取り替え時期等を的確に判断す
ることのできる、脱臭剤や空気清浄フイルター等
として有用な、塩基性ガス吸着剤に関する。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a basic gas adsorbent, more specifically,
The present invention relates to a basic gas adsorbent useful as a deodorizing agent, an air purifying filter, etc., which has a means for displaying the adsorption capacity, thereby making it possible to know the decrease in the adsorption capacity and accurately judge when to replace the filter.
従来の技術
アンモニアやアミンのような塩基性ガスの吸着
剤として、従来から活性炭が知られており、ま
た、近年、トリポリリン酸二水素アルミニウムが
提案されている。Prior Art Activated carbon has been known as an adsorbent for basic gases such as ammonia and amines, and aluminum dihydrogen tripolyphosphate has been proposed in recent years.
一般に、この種の吸着剤は、塩基性ガスを吸着
するにつれ、吸着能が低下し、ついには、吸着能
を失うので、適当な時期に取り替えや、再生を行
なう必要がある。しかしながら、吸着剤は吸着能
が低下しても、外観上、何ら変化を示さず、その
吸着能の低下を知り、取り替え時期等を的確に判
断することはできない。 Generally, as this type of adsorbent adsorbs basic gas, its adsorption capacity decreases and eventually it loses its adsorption capacity, so it is necessary to replace or regenerate it at an appropriate time. However, even if the adsorption capacity of the adsorbent decreases, it does not show any change in appearance, and it is not possible to know the decrease in the adsorption capacity and accurately judge when to replace the adsorbent.
このような事情から、トリポリリン酸二水素ア
ルミニウムにおいて、それがPH１〜３と低PHの物
質であり、塩基性ガスを吸着するとPHが上昇する
ところから、PHの変化に応じて変色する物質を含
浸させ、変色により、トリポリリン酸二水素アル
ミニウムの吸着能変化を表示させ、取り替え時期
等の判断に供することが試みられている（特開昭
58−119340号）。 Due to these circumstances, aluminum dihydrogen tripolyphosphate is a substance with a low pH of 1 to 3, and the pH increases when it absorbs basic gases, so we impregnated it with a substance that changes color depending on the change in pH. Attempts have been made to display changes in the adsorption capacity of aluminum dihydrogen tripolyphosphate through discoloration, which can be used to determine when to replace the aluminum (Japanese Patent Application Laid-open No.
58-119340).
発明が解決しようとする問題点
本発明者らは、意外にも、従来吸湿剤として知
られているシリカアルミナゲルが、アンモニアや
アミンのような塩基性ガスの吸着剤として有用で
あることを見出した。しかしながら、シリカアル
ミナゲルにおいても、吸着能の変化を外観上認識
することができず、取り替え時期等を的確に判断
できないという問題がある。Problems to be Solved by the Invention The present inventors have surprisingly discovered that silica alumina gel, which has been conventionally known as a moisture absorbent, is useful as an adsorbent for basic gases such as ammonia and amines. Ta. However, even with silica alumina gel, there is a problem in that changes in adsorption capacity cannot be visually recognized and it is difficult to accurately determine when to replace the gel.
一方、シリカアルミナゲルは、トリポリリン酸
二水素アルミニウムよりも、はるかに高いPH値を
有するもので、単にPHの変化に応じて変色する物
質含浸させても、吸着能の変化を明確に表示させ
ることはできない。 On the other hand, silica alumina gel has a much higher pH value than aluminum dihydrogen tripolyphosphate, and even if it is simply impregnated with a substance that changes color according to changes in pH, changes in adsorption capacity cannot be clearly displayed. I can't.
そこで、本発明者らは、シリカアルミナゲルを
塩基性ガスの吸着剤として使用するに際し、その
吸着能の変化を明確に表示する手段を得るべく、
鋭意検討を重ねた。その結果、シリカアルミナゲ
ルは不揮発性酸の含浸により、そのPHを１程度に
まで低下させることができ、酸の量を適宜調節
し、同時に、PHの変化に応じて変色する物質を含
浸させておけば、塩基性ガスに対する吸着能の変
化に応じて変色が起こり、シリカアルミナゲルの
塩基性ガスの吸着能を明確に表示でき、取り替え
時期等を的確に判断できることが判明した。 Therefore, when using silica alumina gel as an adsorbent for basic gases, the present inventors aimed to obtain a means for clearly displaying changes in the adsorption capacity of silica alumina gel.
After careful consideration. As a result, the pH of silica alumina gel can be lowered to about 1 by impregnating it with a non-volatile acid, and the amount of acid can be adjusted accordingly, and at the same time, it can be impregnated with a substance that changes color depending on the change in pH. It has been found that if the silica alumina gel is left in place, discoloration will occur in response to changes in the adsorption capacity for basic gases, and that the silica alumina gel's adsorption capacity for basic gases can be clearly displayed and the timing of replacement etc. can be accurately determined.
問題点を解決するための手段
本発明は、シリカアルミナゲル100重量部に対
して0.01〜20重量部の不揮発性酸およびPHの変化
に応じて変色する物質を含浸させたシリカアルミ
ナゲルを含有してなることを特徴とする塩基性ガ
ス吸着剤を提供するものである。Means for Solving the Problems The present invention contains silica alumina gel impregnated with 0.01 to 20 parts by weight of a nonvolatile acid and a substance that changes color according to changes in pH per 100 parts by weight of silica alumina gel. The present invention provides a basic gas adsorbent characterized by:
用いるシリカアルミナゲル（SiO2−Al2O3で表
わすことができる粒状物）は特に限定するもので
はなく、粒径、SiO2とAl2O3の組成も広範囲のも
のが用いられ、例えば、ゲル中のアルミナ
（Al2O3）の割合が0.1〜99％の範囲のものでよい。
通常、商業的に人手可能なシリカアルミナが好適
に使用できる。なお、本発明においては、シリカ
アルミナゲルとして、Al2O3の割合の０のもの、
すなわち、シリカゲルあるいは、SiO2の割合が
０のもの、すなわち、アルミナゲルを用いること
も可能である。 The silica alumina gel (granular material that can be expressed as SiO 2 - Al 2 O 3 ) used is not particularly limited, and a wide range of particle sizes and compositions of SiO 2 and Al 2 O 3 can be used. For example, The gel may have an alumina (Al 2 O 3 ) content in the range of 0.1 to 99%.
Usually, commercially available silica alumina can be suitably used. In addition, in the present invention, as the silica alumina gel, one with a proportion of Al 2 O 3 of 0,
That is, it is also possible to use silica gel or a material containing 0 SiO 2 , that is, alumina gel.
シリカアルミナゲルに含浸させる酸は無機酸、
有機酸のいずれでもよく、また、２種以上の酸を
併用してもよいが、吸着剤としての用途上、不揮
発性酸であることが必要である。このような酸の
例としては、pKa2〜９の範囲の不揮発性の無機
酸および有機酸が挙げられ、これらには、硫酸、
リン酸、ホウ酸、シユウ酸、乳酸、フマル酸、マ
レイン酸、コハク酸、酒石酸、クエン酸などが包
含される。含浸させる酸の量は、一般に、シリカ
アルミナゲルのPHを約1.0〜4.0程度にまで低下さ
せるに充分な酸の量とすることが好ましく、これ
は、実際に用いるシリカアルミナゲル自体のPHと
の関係から、実験により容易に決定でき、シリカ
アルミナゲル100重量部に対し、0.01〜20重量部
の酸を含浸に用いる。 The acid impregnated into silica alumina gel is an inorganic acid.
Any organic acid may be used, or two or more acids may be used in combination, but it is necessary to use a nonvolatile acid for use as an adsorbent. Examples of such acids include non-volatile inorganic and organic acids ranging in pKa from 2 to 9, including sulfuric acid,
Included are phosphoric acid, boric acid, oxalic acid, lactic acid, fumaric acid, maleic acid, succinic acid, tartaric acid, citric acid, and the like. Generally, the amount of acid to be impregnated is preferably enough to lower the pH of the silica alumina gel to about 1.0 to 4.0, which is the same as the pH of the silica alumina gel itself actually used. From the relationship, it can be easily determined by experiment, and 0.01 to 20 parts by weight of acid is used for impregnation with respect to 100 parts by weight of silica alumina gel.
PHの変化に応じて変色する物質としては、PH１
以上、好ましくは、PH１〜９の範囲に変色域を有
するPH指示薬を用いることができ、これらは２種
以上を併用することができる。例えば、チモール
ブルー、メタクレゾールパーブル、メチルイエロ
ー，メチルオレンジ、メチルレツド、ブロモクレ
ゾルパーブル，ブロモフエノールレツド、ブロモ
チモールブルー、フエノールレツドなどが挙げら
れる。かかる物質の含浸量も特に限定するもので
はなく、色の変化が明確に判断できる範囲で適宜
選択することができる。通常、シリカアルミナゲ
ルの表面が着色する程度の量を含浸に用いること
が好ましい。 PH1 is a substance that changes color according to changes in PH.
As mentioned above, it is preferable to use a PH indicator having a color change range in the range of PH 1 to 9, and two or more types of these can be used in combination. Examples include thymol blue, metacresol purple, methyl yellow, methyl orange, methyl red, bromocresol purple, bromophenol red, bromothymol blue, and phenol red. The amount of impregnation of such a substance is not particularly limited, and can be appropriately selected within a range where a color change can be clearly determined. Usually, it is preferable to use an amount for impregnation that will color the surface of the silica alumina gel.
シリカアルミナゲルへの酸およびPHの変化に応
じて変色する物質の含浸は通常の含浸技術に従つ
て行なうことができる。例えば、適当な濃度のPH
指示薬のエタノール溶液を含有する所望の酸の水
溶液にシリカアルミナゲルを一定時間、例えば、
飽和時点まで浸漬し、ついで、乾燥することによ
り、含浸を行なうことができる。 Impregnation of the silica alumina gel with an acid and a substance that changes color in response to a change in pH can be carried out according to conventional impregnation techniques. For example, the appropriate concentration of PH
Silica alumina gel in an aqueous solution of the desired acid containing an ethanolic solution of the indicator for a certain period of time, e.g.
Impregnation can be carried out by soaking to the point of saturation and then drying.
かくして得られたシリカアルミナゲルはアンモ
ニアやアミンのような塩基性ガスを吸着し、ゲル
のPHに変化が起こるにつれて、含浸させたPHの変
化に応じて変色する物質が変色し、その時点のゲ
ルの塩基性ガス吸着能を表示することができ、こ
れにより、吸着能の残存有無、取り替え時期等を
的確に判断することができる。 The silica alumina gel thus obtained adsorbs basic gases such as ammonia and amines, and as the pH of the gel changes, the impregnated substance changes color depending on the change in pH, and the gel at that point changes color. It is possible to display the basic gas adsorption capacity of the product, thereby making it possible to accurately judge whether or not the adsorption capacity remains and whether it is time to replace it.
本発明の塩基性ガス吸着剤は、かかる酸および
PHの変化に応じて変色する物質を含浸させたシリ
カアルミナゲル単独または、それと、これらの酸
や物質を含浸させないシリカアルミナゲルとの混
合物を、所望により、常法に従つて適当な容器に
入れてなるものである。また、要すれば、これら
に、さらに、他の塩基性ガス吸着剤、例えば、活
性炭、トリポリリン酸二水素アルミニウムを適宜
混合してもよい。 The basic gas adsorbent of the present invention contains such acids and
If desired, place silica alumina gel alone impregnated with a substance that changes color according to changes in pH, or a mixture of it and silica alumina gel that is not impregnated with these acids or substances, in a suitable container according to a conventional method. This is what happens. Further, if necessary, other basic gas adsorbents such as activated carbon and aluminum dihydrogen tripolyphosphate may be mixed as appropriate.
本発明の塩基性ガス吸着剤は、脱臭剤や空気清
浄フイルター等として用いることができ、こと
に、タバコの煙中に含まれるアンモニアの除去に
すぐれた効果を発揮する。 The basic gas adsorbent of the present invention can be used as a deodorizer, an air purifying filter, etc., and is particularly effective in removing ammonia contained in cigarette smoke.
実施例
つぎに実施例を挙げて、本発明をさらに詳しく
説明する。Examples Next, the present invention will be explained in more detail with reference to examples.
実施例 １
シリカアルミナゲル（水沢化学製ネオビーズ
SA、Al2O3：SiO2＝４：６、２％水懸濁液のPH
は約6.0）50ｇを0.005％チモールブルーを含有す
る8.5％リン酸水溶液20mlに浸漬し、10分間撹拌
した後、100℃で３時間減圧乾燥し、所望の吸着
剤を得た。この吸着剤は塩基性ガスを吸着するに
従つて、赤色から黄色に変化する。Example 1 Silica alumina gel (Neobeads manufactured by Mizusawa Chemical Co., Ltd.)
SA, Al 2 O 3 :SiO 2 =4:6, PH of 2% water suspension
(approximately 6.0) was immersed in 20 ml of an 8.5% phosphoric acid aqueous solution containing 0.005% thymol blue, stirred for 10 minutes, and then dried under reduced pressure at 100° C. for 3 hours to obtain the desired adsorbent. This adsorbent changes color from red to yellow as it adsorbs basic gas.
実施例 ２
実施例１と同様に、ただし、リン酸の濃度を２
倍（17％）にした水溶液を用いて所望の吸着剤を
得た。Example 2 Same as Example 1, except that the concentration of phosphoric acid was 2
The desired adsorbent was obtained using an aqueous solution doubled (17%).
実施例 ３
0.005％メチルレツドを含む、0.5％クエン酸水
溶液20mlを代わりに用いる以外は実施例１と同様
にして所望の吸着剤を得た。Example 3 A desired adsorbent was obtained in the same manner as in Example 1, except that 20 ml of a 0.5% citric acid aqueous solution containing 0.005% methyl red was used instead.
実施例 ４
アルミナゲル（水沢化学製ネオビーズGB）50
ｇを、0.005％メチルレツドを含む、17％リン酸
水溶液20mlに浸漬し、10分間撹拌した後、100℃
で３時間減圧乾燥して所望の吸着剤を得た。Example 4 Alumina gel (Neobeads GB manufactured by Mizusawa Chemical) 50
g was immersed in 20 ml of a 17% phosphoric acid aqueous solution containing 0.005% methyl red, stirred for 10 minutes, and then heated to 100°C.
The desired adsorbent was obtained by drying under reduced pressure for 3 hours.
実施例 ５
シリカアルミナゲル（水沢化学製ネオビーズ
Ｄ、Al2O3：SiO2＝９：１）50ｇを、0.005％メチ
ルレツドを含む、17％リン酸水溶液20mlに浸漬
し、10分間撹拌した後、100℃で３時間減圧乾燥
して所望の吸着剤を得た。Example 5 50 g of silica alumina gel (Neobeads D manufactured by Mizusawa Chemical Co., Ltd., Al 2 O 3 :SiO 2 =9:1) was immersed in 20 ml of a 17% phosphoric acid aqueous solution containing 0.005% methyl red, and after stirring for 10 minutes, The desired adsorbent was obtained by drying under reduced pressure at 100°C for 3 hours.
実施例 ６
シリカアルミナゲル（水沢化学製ネオビーズ
Ｃ、Al2O3：SiO2＝99：８：0.2）50ｇを、ブロム
クレゾールパープル0.005％を含む、0.5％クエン
酸水溶液20mlに浸漬し、10分間撹拌した後、100
℃で３時間減圧乾燥して所望の吸着剤を得た。Example 6 50 g of silica alumina gel (Neobeads C manufactured by Mizusawa Chemical Co., Ltd., Al 2 O 3 :SiO 2 =99:8:0.2) was immersed in 20 ml of a 0.5% citric acid aqueous solution containing 0.005% bromcresol purple for 10 minutes. After stirring, 100
The desired adsorbent was obtained by drying under reduced pressure at °C for 3 hours.
実施例 ７
ブロムクレゾールパープル0.005％を含む、17
％リン酸水溶液20mlを代わりに用いる以外は実施
例６と同様にして所望の吸着剤を得た。Example 7 Containing 0.005% Bromocresol Purple, 17
A desired adsorbent was obtained in the same manner as in Example 6, except that 20 ml of % phosphoric acid aqueous solution was used instead.
発明の効果
(1) 本発明の吸着剤の、タバコ（マイルドセブ
ン）副流煙ガス中のアンモニア除去効果をつぎ
のようにして試験した。Effects of the Invention (1) The effectiveness of the adsorbent of the present invention in removing ammonia from cigarette (mild seven) sidestream smoke gas was tested as follows.
予め、ガラス繊維フイルターで粒子状物質を
除去したタバコの副流煙ガスを断面積28.3cm2の
管状流路中を整流状態で流し、流路の途中に設
けた、フイルター状の容器に収納した実施例１
の吸着剤層を通過させ、吸着剤層通過前後の副
流煙ガス中アンモニア濃度を、タバコ１本ごと
にインドフエノール法（JIS K0099）で測定し
た。通過前後のアンモニア濃度から、次式によ
り、吸着剤のアンモニア除去率を算出した。 Cigarette sidestream smoke gas, from which particulate matter had been removed using a glass fiber filter, was flowed in a rectified state through a tubular channel with a cross-sectional area of 28.3 cm 2 and stored in a filter-like container provided in the middle of the channel. Example 1
The ammonia concentration in the sidestream smoke gas before and after passing through the adsorbent layer was measured for each cigarette using the indophenol method (JIS K0099). The ammonia removal rate of the adsorbent was calculated from the ammonia concentration before and after passage using the following formula.
NH3除去率（％）＝通過後のNH3濃度／通過前のNH3濃
度×100
同様に、含浸処理を施さないシリカアルミナ
ゲル（ネオビーズSA）およびヤシガラ活性炭
についても、アンモニア除去率を測定した。 NH 3 removal rate (%) = NH 3 concentration after passing / NH 3 concentration before passing × 100 Similarly, the ammonia removal rate was measured for silica alumina gel (Neobeads SA) and coconut shell activated carbon that were not subjected to impregnation treatment. .
また、実施例１の吸着剤については、同時
に、タバコ１本ごとに、色差計（日本電色工業
モデル1001DP）を用いて表面色差を測定した。 Furthermore, for the adsorbent of Example 1, the surface color difference was simultaneously measured for each cigarette using a color difference meter (Nippon Denshoku Kogyo Model 1001DP).
結果を第１図に示す。 The results are shown in Figure 1.
第１図は、縦軸にアンモニア除去率および色
差（△ｂ）、横軸にタバコの本数を取つた、各
吸着剤のアンモニア除去率の変化および実施例
１の吸着剤の色調変化を示すグラフである。第
１図に示すごとく、酸の含浸によつても、アン
モニア除去率に大きな変化はなく、シリカアル
ミナゲルは活性炭よりもすぐれたアンモニア除
去率を示す。また、△ｂ値は黄色の増加を示す
値で、△ｂ＝０は赤色、△ｂ＝28.0程度で黄色
になる。したがつて、実施例１の吸着剤は、ア
ンモニアの除去率が低下するに従い、赤色から
黄色へと変化していき、アンモニア除去率が10
％程度に低下した時点で完全に黄色となつてお
り、これにより、吸着能の表示が行なえ、取り
替え時期等が的確に判断できる。 FIG. 1 is a graph showing changes in the ammonia removal rate of each adsorbent and color tone changes of the adsorbent of Example 1, with ammonia removal rate and color difference (Δb) on the vertical axis and the number of cigarettes on the horizontal axis. It is. As shown in FIG. 1, there is no significant change in ammonia removal rate even with acid impregnation, and silica alumina gel exhibits a better ammonia removal rate than activated carbon. Further, the Δb value is a value indicating an increase in yellow color, with Δb=0 being red and Δb=about 28.0 being yellow. Therefore, the adsorbent of Example 1 changed from red to yellow as the ammonia removal rate decreased, and the ammonia removal rate decreased to 10.
%, it becomes completely yellow, and this allows the adsorption capacity to be displayed and the time for replacement to be determined accurately.
(2) 酸の濃度と吸着剤の色調変化の関係を、実施
例１および２の吸着剤を用い、前記(1)と同様に
試験した。(2) The relationship between acid concentration and color change of the adsorbent was tested in the same manner as in (1) above using the adsorbents of Examples 1 and 2.
結果を第２図に示す。 The results are shown in Figure 2.
第２図は縦軸に色差（△ｂ）および横軸にタ
バコの本数を取つた色差変化を示すグラフであ
る。第２図に示すごとく、酸の量を調節するこ
とにより、色調変化を鋭敏にしたり、明確に表
示させることが可能である。 FIG. 2 is a graph showing the change in color difference with the vertical axis representing the color difference (Δb) and the horizontal axis representing the number of cigarettes. As shown in FIG. 2, by adjusting the amount of acid, it is possible to make the color tone change more sensitive and to display it more clearly.
第１図は種々の吸着剤のアンモニア除去率の変
化を示すグラフ、第２図は酸濃度と色調変化の関
係を示すグラフである。
FIG. 1 is a graph showing changes in the ammonia removal rate of various adsorbents, and FIG. 2 is a graph showing the relationship between acid concentration and color tone change.
Claims (1)
〜20重量部の不揮発性酸およびPHの変化に応じて
変色する物質を含浸させたシリカアルミナゲルを
含有してなることを特徴とする塩基性ガス吸着
剤。1 0.01 per 100 parts by weight of silica alumina gel
1. A basic gas adsorbent comprising silica alumina gel impregnated with ~20 parts by weight of a nonvolatile acid and a substance that changes color according to changes in pH.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60117326A JPS61274743A (en) | 1985-05-29 | 1985-05-29 | Basic gas adsorbent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60117326A JPS61274743A (en) | 1985-05-29 | 1985-05-29 | Basic gas adsorbent |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61274743A JPS61274743A (en) | 1986-12-04 |
| JPH0513694B2 true JPH0513694B2 (en) | 1993-02-23 |
Family
ID=14708971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60117326A Granted JPS61274743A (en) | 1985-05-29 | 1985-05-29 | Basic gas adsorbent |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61274743A (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02126856A (en) * | 1988-11-07 | 1990-05-15 | Matsushita Electric Ind Co Ltd | Deodorizing filter |
| JPH03154634A (en) * | 1989-11-10 | 1991-07-02 | Matsushita Electric Ind Co Ltd | Color changeable deodorant |
| ATE179633T1 (en) * | 1993-10-14 | 1999-05-15 | Engelhard Process Chem Gmbh | ADSORPTIVE DRYING OF NEUTRAL GASES |
| DE19901049B4 (en) * | 1999-01-14 | 2011-03-10 | Ftu Gmbh Forschung Und Technische Entwicklung Im Umweltschutz | Means for the purification of gases and waste gases and their use |
| US6190629B1 (en) * | 1999-04-16 | 2001-02-20 | Cbl Technologies, Inc. | Organic acid scrubber and methods |
| JP2001327589A (en) * | 2000-05-22 | 2001-11-27 | Rengo Co Ltd | Malodor adsorbent |
| DE10312807A1 (en) * | 2002-03-21 | 2004-02-12 | Westfaliasurge Gmbh | aerosol filters |
| US20070087444A1 (en) * | 2005-10-14 | 2007-04-19 | England William G | Adsorbent composition with reactive indicator |
| US8097235B2 (en) * | 2009-06-22 | 2012-01-17 | Toyota Motor Engineering & Manufacturing North America, Inc. | Bronsted acid destabilization of complex metal hydrides |
| CN103861140A (en) * | 2014-03-18 | 2014-06-18 | 严明东 | Deodorizing agent for refrigerator |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61264258A (en) * | 1985-05-17 | 1986-11-22 | Sekisui Chem Co Ltd | Indicator for indicating remaining deodorizing power of deodorizer and deodorizing system using said indicator |
-
1985
- 1985-05-29 JP JP60117326A patent/JPS61274743A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61264258A (en) * | 1985-05-17 | 1986-11-22 | Sekisui Chem Co Ltd | Indicator for indicating remaining deodorizing power of deodorizer and deodorizing system using said indicator |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61274743A (en) | 1986-12-04 |
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