JP2683767B2 - Carbon dioxide separation membrane containing polydentate ligand and carbon dioxide carrier - Google Patents
Carbon dioxide separation membrane containing polydentate ligand and carbon dioxide carrierInfo
- Publication number
- JP2683767B2 JP2683767B2 JP6204435A JP20443594A JP2683767B2 JP 2683767 B2 JP2683767 B2 JP 2683767B2 JP 6204435 A JP6204435 A JP 6204435A JP 20443594 A JP20443594 A JP 20443594A JP 2683767 B2 JP2683767 B2 JP 2683767B2
- Authority
- JP
- Japan
- Prior art keywords
- carbon dioxide
- alkali metal
- separation membrane
- polydentate ligand
- membrane
- 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
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
- Y02C20/00—Capture or disposal of greenhouse gases
- Y02C20/40—Capture or disposal of greenhouse gases of CO2
Landscapes
- Carbon And Carbon Compounds (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は混合ガス中の二酸化炭素
を分離、濃縮するための多座配位子を含む二酸化炭素分
離膜及びそれに用いる二酸化炭素キャリヤーに関するも
のである。TECHNICAL FIELD The present invention relates to a carbon dioxide separation membrane containing a polydentate ligand for separating and concentrating carbon dioxide in a mixed gas, and a carbon dioxide carrier used for the membrane.
【０００２】[0002]
【従来の技術】混合ガス中の二酸化炭素を分離濃縮する
ために、アルカリ金属炭酸塩の水溶液からなる液体膜を
用いた例は知られている（Ｓｃｉｅｎｃｅ，１５５，４
４（１９６７）、Ｓｃｉｅｎｃｅ，１５６，１４８１
（１９６７））。しかし、この液体膜は、二酸化炭素に
対する比較的すぐれた選択性と透過性を有しているもの
の、その特性は未だ十分なものではなく、より効率的に
二酸化炭素を分離濃縮し得る二酸化炭素分離膜の開発が
望まれている。2. Description of the Related Art There is known an example in which a liquid film made of an aqueous solution of an alkali metal carbonate is used to separate and concentrate carbon dioxide in a mixed gas (Science, 155 , 4).
4 (1967), Science, 156 , 1481.
(1967)). However, although this liquid membrane has relatively excellent selectivity and permeability for carbon dioxide, its characteristics are not yet sufficient, and it can separate and concentrate carbon dioxide more efficiently. Membrane development is desired.
【０００３】[0003]
【発明が解決しようとする課題】本発明は、二酸化炭素
透過特性にすぐれた二酸化炭素分離膜及びそれに用いる
二酸化炭素キャリヤーを提供することをその課題とす
る。SUMMARY OF THE INVENTION An object of the present invention is to provide a carbon dioxide separation membrane having excellent carbon dioxide permeation characteristics and a carbon dioxide carrier used for the membrane.
【０００４】[0004]
【課題を解決するための手段】本発明者らは、前記課題
を解決すべく鋭意研究を重ねた結果、（Ａ）アルカリ金
属炭酸塩及び／又はアルカリ金属重炭酸塩と（Ｂ）アル
カリ金属イオンと錯体を形成する多座配位子を含む溶液
からなる液膜が二酸化炭素分離膜としてすぐれた作用を
示すことを見出し、本発明を完成するに至った。即ち、
本発明によれば、（Ａ）アルカリ金属炭酸塩及び／又は
アルカリ金属重炭酸塩と（Ｂ）アルカリ金属イオンと錯
体を形成する多座配位子を水及び／又は極性有機溶媒に
溶解した溶液と、該溶液を保持するための支持体とから
なることを特徴とする二酸化炭素分離膜が提供される。
また、本発明によれば、（Ａ）アルカリ金属炭酸塩及び
／又はアルカリ金属重炭酸塩と（Ｂ）アルカリ金属イオ
ンと錯体を形成する多座配位子からなる二酸化炭素キャ
リヤーが提供される。Means for Solving the Problems As a result of intensive studies to solve the above problems, the present inventors have found that (A) an alkali metal carbonate and / or an alkali metal bicarbonate and (B) an alkali metal ion. The present inventors have found that a liquid membrane composed of a solution containing a polydentate ligand forming a complex with the carbon dioxide separation membrane has an excellent action and completed the present invention. That is,
According to the present invention, a solution obtained by dissolving (A) an alkali metal carbonate and / or an alkali metal bicarbonate and (B) a polydentate ligand forming a complex with an alkali metal ion in water and / or a polar organic solvent. And a support for holding the solution, a carbon dioxide separation membrane is provided.
Further, according to the present invention, there is provided a carbon dioxide carrier comprising (A) an alkali metal carbonate and / or an alkali metal bicarbonate and (B) a polydentate ligand forming a complex with an alkali metal ion.
【０００５】本発明の二酸化炭素分離膜（以下、単に分
離膜とも言う）は、（Ａ）アルカリ金属炭酸塩及び／又
はアルカリ金属重炭酸塩（以下、これらを単に炭酸塩と
も言う）と、（Ｂ）アルカリ金属イオンと錯体を形成す
る多座配位子からなる二酸化炭素キャリヤーを含むもの
である。アルカリ金属炭酸塩としては、炭酸リチウム、
炭酸ナトリウム、炭酸カリウム、炭酸ルビジウム、炭酸
セシウムを挙げることができる。アルカリ金属イオンと
錯体を形成する多座配位子としては、従来公知のもの、
例えば、１２−クラウン−４、１５−クラウン−５、１
８−クラウン−６、ベンゾ−１２−クラウン−４、ベン
ゾ−１５−クラウン−５、ベンゾ−１８−クラウン−
６、ジベンゾ−１２−クラウン−４、ジベンゾ−１５−
クラウン−５、ジベンゾ−１８−クラウン−６、ジシク
ロヘキシル−１２−クラウン−４、ジシクロヘキシル−
１５−クラウン−５、ジシクロヘキシル−１８−クラウ
ン−６、ｎ−オクチル−１２−クラウン−４、ｎ−オク
チル−１５−クラウン−５、ｎ−オクチル−１８−クラ
ウン−６等の環状ポリエーテル；クリプタンド〔２．
１〕、クリプタンド〔２．２〕等の環状ポリエーテルア
ミン；クリプタンド〔２．２．１〕、クリプタンド
〔２．２．２〕等の双環式ポリエーテルアミン；エチレ
ンジアミン四酢酸、イミノ二酢酸、ニトリロ三酢酸、ヒ
ドロキシエチルイミノ二酢酸、ｔｒａｎｓ−１，２−ジ
アミノシクロヘキサン−Ｎ，Ｎ，Ｎ′，Ｎ′−四酢酸、
エチレンジエチルトリアミン−Ｎ，Ｎ，Ｎ′，Ｎ″，
Ｎ″−五酢酸、ヒドロキシエチルエチレンジアミン三酢
酸、ジヒドロキシエチルグリシン等のポリアミノカルボ
ン酸を用いることができる。上記の内、塩を形成するも
のについては、それを使用することができる（部分塩を
含む）。又、多座配位子を数種類混合して添加すること
も可能である。The carbon dioxide separation membrane of the present invention (hereinafter also simply referred to as a separation membrane) comprises (A) an alkali metal carbonate and / or an alkali metal bicarbonate (hereinafter simply referred to as a carbonate), and ( B) It contains a carbon dioxide carrier consisting of a polydentate ligand that forms a complex with an alkali metal ion. As the alkali metal carbonate, lithium carbonate,
Mention may be made of sodium carbonate, potassium carbonate, rubidium carbonate and cesium carbonate. As the polydentate ligand that forms a complex with an alkali metal ion, conventionally known ones,
For example, 12-crown-4, 15-crown-5, 1
8-crown-6, benzo-12-crown-4, benzo-15-crown-5, benzo-18-crown-
6, dibenzo-12-crown-4, dibenzo-15-
Crown-5, dibenzo-18-crown-6, dicyclohexyl-12-crown-4, dicyclohexyl-
Cyclic polyethers such as 15-crown-5, dicyclohexyl-18-crown-6, n-octyl-12-crown-4, n-octyl-15-crown-5, n-octyl-18-crown-6; cryptands. [2.
1], cyclic polyetheramines such as cryptand [2.2]; bicyclic polyetheramines such as cryptand [2.2.1] and cryptand [2.2.2]; ethylenediaminetetraacetic acid, iminodiacetic acid, Nitrilotriacetic acid, hydroxyethyliminodiacetic acid, trans-1,2-diaminocyclohexane-N, N, N ', N'-tetraacetic acid,
Ethylenediethyltriamine-N, N, N ', N ",
Polyaminocarboxylic acid such as N ″ -pentaacetic acid, hydroxyethylethylenediaminetriacetic acid, dihydroxyethylglycine can be used. Of the above, those that form a salt can be used (including partial salts It is also possible to add several kinds of multidentate ligands as a mixture.
【０００６】本発明の分離膜を製造するには、先ず、前
記炭酸塩とアルカリ金属と錯体を形成する多座配位子を
溶媒に溶解させて溶液を作る。溶媒としては、炭酸塩と
多座配位子を溶解し得るものであれば任意のものが使用
可能である。一般的には、水や極性有機溶媒あるいは水
と極性有機溶媒との混合液が用いられる。極性有機溶媒
としては、窒素や、硫黄、酸素等のヘテロ原子を含むも
の、例えば、イミダゾールや、Ｎ−メチルイミダゾー
ル、Ｎ−プロピルイミダゾール、Ｎ−フェニルイミダゾ
ール、Ｎ−ベンジルイミダゾール等のＮ−置換イミダゾ
ール等のイミダゾール系化合物の他、ジメチルスルホキ
シド、ジオクチルスルホキシド等のジアルキルスルホキ
シド、Ｎ，Ｎ−ジメチルホルムアミド、Ｎ，Ｎ−ジオク
チルホルムアミド等のＮ，Ｎ−ジアルキルホルムアミド
等が挙げられる。また、本発明においては、分離膜の安
定性の点から、極性有機溶媒としては、できるだけ高沸
点のもの、通常、沸点１００℃以上、好ましくは１５０
℃以上のものを使用するのがよい。To manufacture the separation membrane of the present invention, first, the carbonate and the polydentate ligand forming a complex with an alkali metal are dissolved in a solvent to prepare a solution. As the solvent, any solvent can be used as long as it can dissolve the carbonate and the polydentate ligand. Generally, water, a polar organic solvent, or a mixed liquid of water and a polar organic solvent is used. As the polar organic solvent, nitrogen, those containing a hetero atom such as sulfur and oxygen, for example, N-substituted imidazole such as imidazole, N-methylimidazole, N-propylimidazole, N-phenylimidazole, N-benzylimidazole and the like. In addition to imidazole compounds such as ## STR3 ##, dialkyl sulfoxides such as dimethyl sulfoxide and dioctyl sulfoxide, N, N-dialkylformamides such as N, N-dimethylformamide, N, N-dioctylformamide and the like can be mentioned. Further, in the present invention, from the viewpoint of the stability of the separation membrane, the polar organic solvent has a boiling point as high as possible, usually a boiling point of 100 ° C. or higher, preferably 150.
It is better to use those above ℃.
【０００７】溶液中の炭酸塩濃度は０．１〜５．０ｍｏ
ｌ／ｌ、好ましくは１〜４ｍｏｌ／ｌである。炭酸塩の
濃度が低すぎると、二酸化炭素のキャリヤー効果が低く
なりすぎて好ましくなく、一方、炭酸塩濃度が高すぎる
と、二酸化炭素のキャリヤー速度が遅くなりすぎて好ま
しくない。多座配位子の濃度は、０．００１〜１ｍｏｌ
／ｌ、好ましくは０．０１〜０．１ｍｏｌ／ｌである。The carbonate concentration in the solution is 0.1 to 5.0 mo.
It is 1 / l, preferably 1 to 4 mol / l. If the concentration of carbonate is too low, the carbon dioxide carrier effect becomes too low, which is not preferable, while if the concentration of carbonate is too high, the carbon dioxide carrier speed becomes too low, which is not preferable. The concentration of the multidentate ligand is 0.001-1 mol
/ L, preferably 0.01 to 0.1 mol / l.
【０００８】前記のようにして得られた炭酸塩と多座配
位子を含む溶液は、分離膜とするために、支持体に含浸
保持される。支持体としては、溶液を液膜として保持し
得るものであればどのようなものでも使用可能であり、
特に制約されない。このようなものとしては、各種の多
孔質材料、例えばプラスチック、セラミックス、金属、
ガラス等の多孔質体が挙げられる。また、その形状は、
平膜状、スパイラル状、中空糸状、筒体状、織布状、不
織布状、紙状等の各種の形状であることができる。分離
膜の厚さは、できるだけ薄厚であるのが望ましいが、通
常、５００μｍ以下、好ましくは２００μｍ以下であ
る。前記支持体に炭酸塩と多座配位子を含む溶液を含浸
保持させて形成した分離膜は、その一方の側が二酸化炭
素吸着面として作用し、その反対の側が二酸化炭素放出
面として作用する。支持体が中空糸の場合には、中空糸
の外側を二酸化炭素吸着面として用い、中空糸の内側を
二酸化炭素放出面として用いるか、又はその逆に用い
る。このような中空糸を支持体とした分離膜は、その中
空糸を混合ガス中に置き、その中空糸外面から二酸化炭
素を中空糸内部に透過させ、中空糸内部から濃縮された
二酸化炭素を回収するか、又はその逆に、中空系内面か
ら二酸化炭素を中空系外面に透過させ、中空系外部に濃
縮された二酸化炭素を回収することができる。The solution containing the carbonate and the polydentate ligand obtained as described above is impregnated and held on a support to form a separation membrane. As the support, any material can be used as long as it can hold the solution as a liquid film,
There is no particular restriction. Examples of such materials include various porous materials such as plastics, ceramics, metals,
Examples thereof include porous bodies such as glass. Also, its shape is
It may have various shapes such as a flat film shape, a spiral shape, a hollow fiber shape, a cylindrical shape, a woven cloth shape, a non-woven cloth shape, and a paper shape. The thickness of the separation membrane is preferably as thin as possible, but is usually 500 μm or less, preferably 200 μm or less. The separation membrane formed by impregnating and holding a solution containing carbonate and a polydentate ligand on the support has one side acting as a carbon dioxide adsorbing surface and the other side acting as a carbon dioxide releasing surface. When the support is a hollow fiber, the outside of the hollow fiber is used as the carbon dioxide adsorbing surface and the inside of the hollow fiber is used as the carbon dioxide releasing surface, or vice versa. Such a separation membrane using hollow fibers as a support puts the hollow fibers in a mixed gas, permeates carbon dioxide from the outer surface of the hollow fibers into the hollow fibers, and collects concentrated carbon dioxide from the inside of the hollow fibers. Alternatively, or conversely, carbon dioxide can be permeated from the inner surface of the hollow system to the outer surface of the hollow system, and the carbon dioxide concentrated outside the hollow system can be recovered.
【０００９】本発明の分離膜を用いて二酸化炭素をそれ
を含む混合ガスから分離回収あるいは分離濃縮するに
は、分離膜を透過セルに装着し、その膜の片側に二酸化
炭素を含む混合ガスを接触させ、その混合ガス側の圧力
を、それとは反対側の圧力よりも高く保持する。通常、
混合ガス側と反対側は、減圧又は真空に保持する。In order to separate and collect carbon dioxide from a mixed gas containing it using the separation membrane of the present invention, the separation membrane is attached to a permeation cell, and the mixed gas containing carbon dioxide is attached to one side of the membrane. Contact is made and the pressure on the mixed gas side is kept higher than the pressure on the opposite side. Normal,
The side opposite to the mixed gas side is maintained under reduced pressure or vacuum.
【００１０】このようにして混合ガスを分離膜の片側に
接触させると、混合ガス中の各成分は、いずれも、膜の
両側の分圧差により、分離膜中を拡散透過するが、二酸
化炭素以外の成分はキャリヤー作用を受けないのに対
し、二酸化炭素はキャリヤー作用を受ける。従って、二
酸化炭素の膜透過量は、膜の両側の分圧差による透過量
に、そのキャリヤー輸送による透過量が加わったものと
なる。即ち、分離膜中の炭酸塩と多座配位子からなるキ
ャリヤーが二酸化炭素を選択的に吸着し、膜中を拡散し
て、混合ガスが接触する側とは反対側（透過側）で二酸
化炭素を放出するというサイクルをくり返し、その結
果、二酸化炭素の透過量のみを増大させることができ
る。このキャリヤー作用による二酸化炭素透過量は、キ
ャリヤー作用によらず分圧差のみによるガス成分の透過
量に比べると、著しく大きい。従って、本発明の分離膜
においては、二酸化炭素に関する透過特性、即ち、二酸
化炭素の透過速度と分離係数が飛躍的に増加したもので
ある。When the mixed gas is brought into contact with one side of the separation membrane in this way, each component in the mixed gas diffuses and permeates through the separation membrane due to the partial pressure difference between the both sides of the membrane, but other than carbon dioxide. Carbon dioxide is subject to carrier action, while the component of is not subject to carrier action. Therefore, the membrane permeation amount of carbon dioxide is the permeation amount due to the partial pressure difference between the both sides of the membrane plus the permeation amount due to the carrier transportation. That is, the carrier composed of carbonate and polydentate ligand in the separation membrane selectively adsorbs carbon dioxide, diffuses in the membrane, and is oxidized on the side (permeation side) opposite to the side where the mixed gas comes into contact. The cycle of releasing carbon can be repeated so that only the permeation of carbon dioxide can be increased. The carbon dioxide permeation amount due to the carrier action is significantly larger than the gas component permeation amount due to only the partial pressure difference without depending on the carrier action. Therefore, in the separation membrane of the present invention, the permeation characteristics regarding carbon dioxide, that is, the permeation rate of carbon dioxide and the separation coefficient are dramatically increased.
【００１１】また、本発明の炭酸塩と多座配位子からな
る二酸化炭素キャリヤー溶液は、上記の様な分離膜以外
にも、二酸化炭素吸収剤として吸収法による二酸化炭素
の分離にも使用することができる。更に、分離膜法と吸
収法の中間的なガス分離法である流動液膜法による二酸
化炭素分離にも有効である。The carbon dioxide carrier solution of the present invention comprising a carbonate and a polydentate ligand is also used as a carbon dioxide absorbent for carbon dioxide separation by an absorption method, in addition to the separation membrane as described above. be able to. Further, it is also effective for carbon dioxide separation by a fluidized liquid membrane method, which is a gas separation method intermediate between the separation membrane method and the absorption method.
【００１２】[0012]
【実施例】次に本発明を実施例によりさらに詳細に説明
する。Next, the present invention will be described in more detail with reference to examples.
【００１３】実施例１ 表１に示す各種水溶液を調製し、これらの水溶液中に親
水化処理したポリフッ化ビニリデン（ＰＶｄＦ）多孔膜
（ミリポア社製、孔径０．２２μｍ、膜厚１１０μｍ、
気孔率７５％）を３０分間浸漬させたのち取出し、ＰＶ
ｄＦ多孔膜を支持体とした含浸型液膜を作製した。この
ようにして得られた液膜をＰＴＦＥ多孔膜（ＦＰ０１
０、住友電工製、孔径０．１μｍ、膜厚５５μｍ）に積
層し、分離膜とした。得られた分離膜（有効膜面積２．
５４ｃｍ２）について、その分離膜特性を以下のように
して評価した。テストガスとしてＣＯ２／Ｎ２＝１０／
９０の混合ガスを用い、これを飽和水蒸気下、流量１０
０ｍｌ／分、全圧１ａｔｍ、２５℃で膜に供給し、透過
側を減圧とした。透過してきたガスをガスクロマトグラ
フで分析し、透過速度と分離係数を算出した。結果を表
２に示す。なお、Ｑｃｏ２は二酸化炭素透過速度（ｃｍ
３／ｃｍ２・ｓ・ｃｍＨｇ）を、αは分離係数（Ｐｃｏ
２／ＰＮ２＝Ｑｃｏ２／ＱＮ２）をそれぞれ示す。ま
た、本発明で多座配位子として用いた化合物の構造式を
以下に示す。 （ａ）１８−クラウン−６Example 1 Various aqueous solutions shown in Table 1 were prepared, and a hydrophilically treated polyvinylidene fluoride (PVdF) porous membrane (manufactured by Millipore, pore size 0.22 μm, film thickness 110 μm,
(Porosity: 75%) soaked for 30 minutes and then removed, PV
An impregnated liquid membrane was prepared using the dF porous membrane as a support. The liquid film thus obtained was used as a PTFE porous film (FP01
0, manufactured by Sumitomo Electric Co., Ltd., having a pore diameter of 0.1 μm and a film thickness of 55 μm) to form a separation membrane. The obtained separation membrane (effective membrane area 2.
For 54 cm 2 ) the characteristics of the separation membrane were evaluated as follows. CO 2 / N 2 = 10 / as test gas
90 mixed gas was used, and this was mixed with saturated steam at a flow rate of 10
It was supplied to the membrane at 0 ml / min, a total pressure of 1 atm, and 25 ° C., and the permeate side was reduced in pressure. The permeated gas was analyzed by a gas chromatograph, and the permeation rate and the separation coefficient were calculated. Table 2 shows the results. Qco 2 is the carbon dioxide permeation rate (cm
3 / cm 2 · s · cmHg), α is the separation factor (Pco
2 / PN 2 = Qco 2 / QN 2 ), respectively. The structural formula of the compound used as the polydentate ligand in the present invention is shown below. (A) 18-crown-6
【化１】 （ｂ）クリプタンド〔２．１〕Embedded image (B) Cryptand [2.1]
【化２】 （ｃ）クリプタンド〔２．２．２〕Embedded image (C) Cryptand [2.2.2]
【化３】 Embedded image
【００１４】[0014]
【表１】 [Table 1]
【００１５】[0015]
【表２】 [Table 2]
【００１６】[0016]
【発明の効果】以上説明したように、本発明の二酸化炭
素分離膜を用いることにより、混合ガスから選択的に二
酸化炭素を分離、濃縮することができる。従って、本発
明の二酸化炭素分離膜は、地球温暖化問題の対策技術と
しての二酸化炭素固定化技術等の分野において、燃焼排
ガスのような大量かつ連続的に排出されるガス中の二酸
化炭素を固定化、再利用するための有効な手段となり得
るものである。また、本発明の二酸化炭素キャリヤー溶
液は、前記二酸化炭素分離素材として使用し得る他、二
酸化炭素吸収剤として使用することができる。As described above, by using the carbon dioxide separation membrane of the present invention, carbon dioxide can be selectively separated and concentrated from the mixed gas. Therefore, the carbon dioxide separation membrane of the present invention fixes carbon dioxide in a large amount and continuously discharged gas such as combustion exhaust gas in the field of carbon dioxide fixation technology as a countermeasure technology against global warming problem. It can be an effective means for recycling and reuse. The carbon dioxide carrier solution of the present invention can be used not only as the carbon dioxide separating material but also as a carbon dioxide absorbent.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 // Ｃ０１Ｄ 7/00 Ｃ０１Ｄ 7/00 Ｚ (72)発明者 中林 誠 東京都港区西新橋２−８−11 第７東洋 海事ビル８階 財団法人地球環境産業技 術研究機構 ＣＯ２固定化等プロジェク ト室内 (72)発明者 岡部 和弘 東京都港区西新橋２−８−11 第７東洋 海事ビル８階 財団法人地球環境産業技 術研究機構 ＣＯ２固定化等プロジェク ト室内 (72)発明者 真野 弘 東京都港区西新橋２−８−11 第７東洋 海事ビル８階 財団法人地球環境産業技 術研究機構 ＣＯ２固定化等プロジェク ト室内 (72)発明者 三島 隆之 東京都港区西新橋２−８−11 第７東洋 海事ビル８階 財団法人地球環境産業技 術研究機構 ＣＯ２固定化等プロジェク ト室内 (72)発明者 原谷 賢治 茨城県つくば市東１丁目１番 工業技術 院物質工学工業技術研究所内 審査官 関 美祝 (56)参考文献 特開 昭58−146567（ＪＰ，Ａ) 特開 昭46−6509（ＪＰ，Ａ) 特開 昭52−152888（ＪＰ，Ａ) 特開 昭62−24551（ＪＰ，Ａ) 特開 昭56−90815（ＪＰ，Ａ) 特開 平４−78413（ＪＰ，Ａ) 特開 平４−29721（ＪＰ，Ａ) 特開 平６−142467（ＪＰ，Ａ) 特開 平６−142466（ＪＰ，Ａ)─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification number Office reference number FI technical display location // C01D 7/00 C01D 7/00 Z (72) Inventor Makoto Nakabayashi Nishishinbashi, Minato-ku, Tokyo 2-8-11 7th Toyo Kaiji Building 8th Floor, Research Institute for Global Environmental Industrial Technology CO2 fixation, etc. Project room (72) Inventor Kazuhiro Okabe 2-8-11 Nishishinbashi, Minato-ku, Tokyo 7th Toyo Kaiji Building 8th floor, Research Institute for Global Environmental Industrial Technology CO2 fixation, etc. Project room (72) Inventor Hiroshi Mano 2-8-11 Nishishimbashi, Minato-ku, Tokyo 7th Toyo Kaiji Building 8th floor Global Environmental Industrial Technology Foundation National Institute of Advanced Science and Technology Project room for CO2 fixation, etc. (72) Inventor Takayuki Mishima 2-8-11 Nishishimbashi, Minato-ku, Tokyo 7th Toyo Kaiji Building 8F Foundation Sphere Environment Industrial Technology Research Institute, Project room for CO2 fixation, etc. (72) Inventor Kenji Haratani, 1-1, Higashi 1-1-chome, Tsukuba-shi, Ibaraki Prefectural Institute of Materials Science and Technology Judge Miyoshi Seki (56) References 58-146567 (JP, A) JP-A 46-6509 (JP, A) JP-A 52-152888 (JP, A) JP-A 62-24551 (JP, A) JP-A 56-90815 (JP , A) JP-A-4-78413 (JP, A) JP-A-4-29721 (JP, A) JP-A-6-142467 (JP, A) JP-A-6-142466 (JP, A)
Claims (3)
ルカリ金属重炭酸塩と（Ｂ）アルカリ金属イオンと錯体
を形成する多座配位子を水及び／又は極性有機溶媒に溶
解した溶液と、該溶液を保持するための支持体とからな
り、該多座配位子が、環状ポリエーテル、環状ポリエー
テルアミン、双環式ポリエーテルアミン、ポリアミノカ
ルボン酸又はポリアミノカルボン酸塩であることを特徴
とする二酸化炭素分離膜。1. A solution in which (A) an alkali metal carbonate and / or an alkali metal bicarbonate and (B) a polydentate ligand forming a complex with an alkali metal ion are dissolved in water and / or a polar organic solvent. And a support for holding the solution, wherein the polydentate ligand is a cyclic polyether, a cyclic polyether amine, a bicyclic polyether amine, a polyaminocarboxylic acid or a polyaminocarboxylic acid salt. Characteristic carbon dioxide separation membrane.
糸状又は筒体状の多孔質体であることを特徴とする請求
項１の二酸化炭素分離膜。2. The carbon dioxide separation membrane according to claim 1, wherein the support is a flat membrane, spiral, hollow fiber or tubular porous body.
ルカリ金属重炭酸塩と（Ｂ）アルカリ金属イオンと錯体
を形成する多座配位子からなり、該多座配位子が、環状
ポリエーテル、環状ポリエーテルアミン、双環式ポリエ
ーテルアミン、ポリアミノカルボン酸又はポリアミノカ
ルボン酸塩であることを特徴とする二酸化炭素キャリヤ
ー。3. A polydentate ligand which forms a complex with (A) an alkali metal carbonate and / or an alkali metal bicarbonate and (B) an alkali metal ion, wherein the polydentate ligand is a cyclic polydentate. Carbon dioxide carrier characterized in that it is an ether, a cyclic polyether amine, a bicyclic polyether amine, a polyaminocarboxylic acid or a polyaminocarboxylic acid salt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6204435A JP2683767B2 (en) | 1993-08-12 | 1994-08-05 | Carbon dioxide separation membrane containing polydentate ligand and carbon dioxide carrier |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22065193 | 1993-08-12 | ||
| JP5-220651 | 1993-08-12 | ||
| JP6204435A JP2683767B2 (en) | 1993-08-12 | 1994-08-05 | Carbon dioxide separation membrane containing polydentate ligand and carbon dioxide carrier |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07246321A JPH07246321A (en) | 1995-09-26 |
| JP2683767B2 true JP2683767B2 (en) | 1997-12-03 |
Family
ID=26514469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6204435A Expired - Lifetime JP2683767B2 (en) | 1993-08-12 | 1994-08-05 | Carbon dioxide separation membrane containing polydentate ligand and carbon dioxide carrier |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2683767B2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003509510A (en) * | 1999-09-24 | 2003-03-11 | ユニヴァーシティ オブ ピッツバーグ | Carbon dioxide-philic compound and method for synthesizing the same |
| WO2014073582A1 (en) * | 2012-11-12 | 2014-05-15 | 公益財団法人地球環境産業技術研究機構 | Co2 gas separation membrane and method for manufacturing same |
| JP6038621B2 (en) * | 2012-12-06 | 2016-12-07 | 次世代型膜モジュール技術研究組合 | Gas separation membrane |
| WO2014157012A1 (en) * | 2013-03-25 | 2014-10-02 | 次世代型膜モジュール技術研究組合 | Gas separation membrane and gas separation method |
| GB201505964D0 (en) * | 2015-04-08 | 2015-05-20 | Norwegian Univ Sci & Tech Ntnu | Composite membrane |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1577723A (en) * | 1976-06-11 | 1980-10-29 | Exxon Research Engineering Co | Removal of a gas component present in a gaseous stream |
| JPH0429721A (en) * | 1990-05-28 | 1992-01-31 | Sumitomo Seika Chem Co Ltd | Carbon dioxide absorbent and method for catching carbon dioxide using the same |
| JPH0478413A (en) * | 1990-07-19 | 1992-03-12 | Hitachi Ltd | Method and device for separating gaseous mixture |
-
1994
- 1994-08-05 JP JP6204435A patent/JP2683767B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07246321A (en) | 1995-09-26 |
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