JPH0477607B2 - - Google Patents
Info
- Publication number
- JPH0477607B2 JPH0477607B2 JP6562588A JP6562588A JPH0477607B2 JP H0477607 B2 JPH0477607 B2 JP H0477607B2 JP 6562588 A JP6562588 A JP 6562588A JP 6562588 A JP6562588 A JP 6562588A JP H0477607 B2 JPH0477607 B2 JP H0477607B2
- Authority
- JP
- Japan
- Prior art keywords
- complex
- oxygen
- cobalt
- gas separation
- 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
Links
- 239000012528 membrane Substances 0.000 claims description 25
- 238000000926 separation method Methods 0.000 claims description 23
- 239000007788 liquid Substances 0.000 claims description 11
- NSTGNPIYOHLTFQ-MDTVQASCSA-N (2S)-2-amino-3-(1H-imidazol-5-yl)propanoic acid cobalt Chemical compound [Co].OC(=O)[C@@H](N)CC1=CNC=N1.OC(=O)[C@@H](N)CC1=CNC=N1 NSTGNPIYOHLTFQ-MDTVQASCSA-N 0.000 claims description 9
- 239000003960 organic solvent Substances 0.000 claims description 6
- 150000005846 sugar alcohols Polymers 0.000 claims description 3
- 239000012510 hollow fiber Substances 0.000 claims description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 21
- 239000001301 oxygen Substances 0.000 description 21
- 229910052760 oxygen Inorganic materials 0.000 description 21
- 239000007789 gas Substances 0.000 description 19
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 14
- 239000000243 solution Substances 0.000 description 11
- 239000002904 solvent Substances 0.000 description 9
- 229910052757 nitrogen Inorganic materials 0.000 description 7
- HNDVDQJCIGZPNO-YFKPBYRVSA-N L-histidine Chemical compound OC(=O)[C@@H](N)CC1=CN=CN1 HNDVDQJCIGZPNO-YFKPBYRVSA-N 0.000 description 4
- 239000007864 aqueous solution Substances 0.000 description 4
- -1 organic acid salts Chemical class 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 229960002885 histidine Drugs 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000012466 permeate Substances 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 2
- 239000005977 Ethylene Substances 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- 229920002302 Nylon 6,6 Polymers 0.000 description 2
- 150000001868 cobalt Chemical class 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- HNDVDQJCIGZPNO-UHFFFAOYSA-N histidine Natural products OC(=O)C(N)CC1=CN=CN1 HNDVDQJCIGZPNO-UHFFFAOYSA-N 0.000 description 2
- 150000004677 hydrates Chemical class 0.000 description 2
- 238000005470 impregnation Methods 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 238000004065 wastewater treatment Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 101710134784 Agnoprotein Proteins 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910021503 Cobalt(II) hydroxide Inorganic materials 0.000 description 1
- OTMSDBZUPAUEDD-UHFFFAOYSA-N Ethane Chemical compound CC OTMSDBZUPAUEDD-UHFFFAOYSA-N 0.000 description 1
- 239000002033 PVDF binder Substances 0.000 description 1
- 239000004695 Polyether sulfone Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229940011182 cobalt acetate Drugs 0.000 description 1
- 150000001869 cobalt compounds Chemical class 0.000 description 1
- 229910000428 cobalt oxide Inorganic materials 0.000 description 1
- QAHREYKOYSIQPH-UHFFFAOYSA-L cobalt(II) acetate Chemical compound [Co+2].CC([O-])=O.CC([O-])=O QAHREYKOYSIQPH-UHFFFAOYSA-L 0.000 description 1
- ASKVAEGIVYSGNY-UHFFFAOYSA-L cobalt(ii) hydroxide Chemical compound [OH-].[OH-].[Co+2] ASKVAEGIVYSGNY-UHFFFAOYSA-L 0.000 description 1
- IVMYJDGYRUAWML-UHFFFAOYSA-N cobalt(ii) oxide Chemical compound [Co]=O IVMYJDGYRUAWML-UHFFFAOYSA-N 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 150000004820 halides Chemical class 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 150000002596 lactones Chemical class 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 150000007522 mineralic acids Chemical class 0.000 description 1
- 239000002808 molecular sieve Substances 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 229920006393 polyether sulfone Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 229920005672 polyolefin resin Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- UQDJGEHQDNVPGU-UHFFFAOYSA-N serine phosphoethanolamine Chemical compound [NH3+]CCOP([O-])(=O)OCC([NH3+])C([O-])=O UQDJGEHQDNVPGU-UHFFFAOYSA-N 0.000 description 1
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
- 150000003624 transition metals Chemical class 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
- Oxygen, Ozone, And Oxides In General (AREA)
- Artificial Filaments (AREA)
Description
「産業上の利用分野」
本発明は特定ガスの促進輸送を行なう液体を用
いた気体分離膜に関するものであり、更に詳しく
は室温下でも可逆的に特定ガスと付加吸着と脱着
を行なう錯体を含む液体を用いた気体分離膜に関
するものである。
「従来の技術」
酸素の工業的製造は古くの今世紀のはじめから
深冷分離法により行われて来た。大規模の装置に
より大量の酸素を製造する場合には、この方法は
最も適した方法であると考えられるが、極めて多
量のエネルギーが必要であり、又オンサイトでの
利用などの場合には、一且耐圧容器に充填して運
搬する必要があり、その結果著しく高価となる。
又比較的中小規模での酸素の製造法としてゼオラ
イトや分子ふるい、カーボンなどの吸着剤への窒
素と酸素の吸着量の差を利用して空気から酸素を
高濃度に分離する方法が最近登場し、特に各種廃
水処理、各種炉への吹き込み、医療用等に利用さ
れているが、酸素を製造する為に必要な電力消費
量が高く、酸素の製造コストが高くなるという欠
点を有している。
一方、特定ガス成分と特別な親和性を有する物
質を液体状態にして薄膜状にすると、その特定ガ
スだけが促進輸送されるため選択性が著しく向上
することが知られている。具体的には、米国特許
第3865890号、第3951621号、第4015955号、第
4060566号によれば、AgNO3水溶液をナイロン
6、6の膜に含浸することにより、メタン、エタ
ン、エチレンの混合物からエチレンを選択的に濃
縮できたとされている。
また、米国特許第3396510号、第3819806号、第
4119408号では、K2CO3水溶液をポリエーテルス
ルホン膜に含浸し、CO2、H2S、SO2等の酸性ガ
ス成分の選択透過を行つている。
このような液体を用いて酸素、窒素の分離を行
う試みが、最近研究され始めている。特開昭59−
12707号公報は、シツフ塩の遷移金属錯体をラク
トン、アミド等の溶媒に溶かし、ナイロン6、6
膜に含浸することで空気から酸素を選択透過する
ことができたとしている。
一方、コバルトジヒスチジン錯体の水溶液が酸
素を可逆的に吸脱着することが知られている。
Biochimica et Biophysica Acta 211巻 194
頁(1970年)は、コバルトジヒスチジン錯体の水
溶液をセルロースエステルの膜に含浸させた液体
膜が酸素の促進輸送を行うことを示している。し
かしこの膜は分離性能が低く実用的に用いること
はできなかつた。
「発明が解決しようとする課題」
本発明の目的は、上記に鑑み、酸素と可逆的に
吸脱着を行なうコバルトジヒスチジン錯体を用い
て、極めて高い酸素と窒素の分離を行うことがで
き、その結果酸素をより安く供給することが可能
な気体分離膜を提供することにある。
「課題を解決するための手段」
即ち本発明の気体分離膜はコバルトジヒスチジ
ン錯体を有機溶媒に溶解した液体と、該液体を保
持するための支持体とからなることを特徴とする
ものである。
以下に本発明を詳細に説明する。
本発明の気体分離膜は、酸素と可逆的吸脱着性
を有する錯体、溶媒及びこれらを溶解した液体を
保持する支持体とによつて構成される。
本発明者は、酸素と窒素の分離に関して鋭意研
究を進めた結果、下式で示されるコバルトジヒス
チジン錯体を特定の溶媒に溶解した液体が極めて
高い酸素選択透過性を有することを見い出し本発
明の完成させた。
すなわち本発明の気体分離膜はコバトジヒスチ
ジン錯体を特定の溶媒に溶解させ、その錯体溶液
を無孔質又は多孔質あるいは、それらを複合した
支持体に保持することで作製することができる。
「作用」
コバルトジヒスチジン錯体は、ヒスチジンとコ
バルト塩を反応させることにより得られる。ヒス
チジンはL体、DL体、D体いずれでもよい。ま
たコバルト塩は酸化コバルト、水酸化コバルト、
ハロゲン化物並びにその水和物、無機酸及び有機
酸塩並びにその水和物、複塩類、有機コバルト化
合物が使用されるが、特に2価の無機塩が好まし
く用いられる。
次にコバルトジヒスチジン錯体を溶媒に溶解す
る。溶媒は有機溶媒を用いることが必要である。
有機溶媒を用いることにより、水を溶媒とした場
合に較べて著しく分離性能が向上する。また有機
溶媒のなかでとりわけエチレングリコール、グリ
セリン等の多価アルコールが上記錯体よく溶解
し、蒸発速度が遅く錯体溶液を長期に保持するこ
とから、好ましく用いられる。
またこれら多価アルコールにメタノール、エタ
ノール、イソプロピルアルコール等の低級アルコ
ール等を混合することも、錯体溶液の粘度を下
げ、錯体の拡散性を増すことで有用である。錯体
溶液中の錯体の濃度は低濃度であれば促進輸送の
効果が現れにくく、濃度が高すぎると錯体の拡散
が抑制されたり、二重化反応によつて特性劣化が
生じ易くなるため、0.01〜1.0mol/の範囲が好
ましく、特に0.1〜0.6mol/の範囲が好ましく、
特に0.1〜0.6mol/の範囲が好ましい。
この錯体溶液を保持する支持体の材料は特に限
定されないがポリ弗化ビニリデン、ポリテトラフ
ルオロエチレン等の弗素樹脂、ポリエチレン、ポ
リプロピレン等のポリオレフイン樹脂、その他の
有機高分子材料があげられる。これら支持体は無
孔質または多孔質あるいは、その複合体でもよい
が、とりわけ錯体溶液の保持性と、酸素の透過性
から多孔質膜が好適に用いられる。またその形状
は平膜状、中空糸状のいずれの形態でも用いるこ
とができる。また多孔質膜の場合その孔径につい
て特に限定されないが錯体の保持性から好ましく
は0.01〜10μmの範囲にあるものがよい。
これら支持体に錯体溶液を流延あるいは含浸さ
せることにより保持させる。特に多孔質支持体に
錯体溶液を含浸させる場合、多孔質中に気泡を残
さず均質に含浸させることが錯体溶液の分離性能
を発現させる上で必要である。このため真空含浸
や加圧操作が有効である。
「実施例」
次に本発明を実施例について説明する。
実施例 1〜5
コバルトジヒスチジン錯体は、L−ヒスチジン
と酢酸コバルトから合成した。
この錯体を第1表に示す各溶媒に0.4mol/
の濃度で溶解させ錯体溶液とした。これらの錯体
溶液に第1表に示す多孔質支持体を浸漬し、15分
間真空に引き含浸させて気体分離膜を作製した。
これらの気体分離膜を透過特性測定用セルに装
着後、O2/N2=21/79の組成比を有する混合ガ
スを供給し、透過してきたガスの組成をガスクロ
マトグラフで測定し、酸素の透過速度QO2と酸素
と窒素の分離係数αO2/N2を求めた。
測定温度は20℃、供給側と透過側のガス圧力比
は1.2Kg/cm2である。
"Industrial Application Field" The present invention relates to a gas separation membrane using a liquid that facilitates the transport of a specific gas, and more specifically includes a complex that performs adsorption and desorption of a specific gas reversibly even at room temperature. This invention relates to gas separation membranes using liquids. "Prior Art" Industrial production of oxygen has been carried out by cryogenic separation since the beginning of this century. This method is considered to be the most suitable method when producing large amounts of oxygen using large-scale equipment, but it requires an extremely large amount of energy, and when used on-site, etc. Moreover, it must be transported in a pressure-resistant container, which results in significant costs.
Also, as a method for producing oxygen on a relatively small to medium scale, a method has recently appeared that separates oxygen from air at high concentrations by utilizing the difference in the amount of nitrogen and oxygen adsorbed onto adsorbents such as zeolite, molecular sieves, and carbon. It is especially used for various wastewater treatment, blowing into various furnaces, medical purposes, etc. However, it has the disadvantage that the power consumption required to produce oxygen is high, which increases the cost of producing oxygen. . On the other hand, it is known that when a substance that has a special affinity for a specific gas component is made into a liquid state and formed into a thin film, only that specific gas is facilitated in transport, resulting in a marked improvement in selectivity. Specifically, U.S. Patent Nos. 3865890, 3951621, 4015955, and
According to No. 4060566, ethylene could be selectively concentrated from a mixture of methane, ethane, and ethylene by impregnating a nylon 6,6 membrane with an AgNO 3 aqueous solution. Also, U.S. Patent Nos. 3396510, 3819806, and
In No. 4119408, a polyether sulfone membrane is impregnated with a K 2 CO 3 aqueous solution to selectively permeate acid gas components such as CO 2 , H 2 S, and SO 2 . Recently, attempts to separate oxygen and nitrogen using such liquids have begun to be studied. Unexamined Japanese Patent Publication 1983-
Publication No. 12707 discloses that a transition metal complex of Schizf salt is dissolved in a solvent such as lactone or amide, and nylon 6, 6
It is said that by impregnating the membrane, it was possible to selectively permeate oxygen from the air. On the other hand, it is known that an aqueous solution of cobalt dihistidine complex reversibly adsorbs and desorbs oxygen. Biochimica et Biophysica Acta Volume 211 194
Page (1970) showed that liquid membranes made by impregnating cellulose ester membranes with aqueous solutions of cobalt dihistidine complexes provided facilitated transport of oxygen. However, this membrane had poor separation performance and could not be used practically. ``Problems to be Solved by the Invention'' In view of the above, the purpose of the present invention is to achieve extremely high separation of oxygen and nitrogen using a cobalt dihistidine complex that reversibly adsorbs and desorbs oxygen. As a result, it is an object of the present invention to provide a gas separation membrane that can supply oxygen at a lower cost. "Means for Solving the Problems" That is, the gas separation membrane of the present invention is characterized by comprising a liquid in which a cobalt dihistidine complex is dissolved in an organic solvent, and a support for holding the liquid. . The present invention will be explained in detail below. The gas separation membrane of the present invention is composed of a complex capable of reversibly adsorbing and desorbing oxygen, a solvent, and a support holding a liquid in which these are dissolved. As a result of intensive research into the separation of oxygen and nitrogen, the present inventor discovered that a liquid obtained by dissolving a cobalt dihistidine complex represented by the following formula in a specific solvent has an extremely high oxygen selective permeability. Completed. That is, the gas separation membrane of the present invention can be produced by dissolving a cobatodihistidine complex in a specific solvent and holding the complex solution on a support that is non-porous, porous, or a composite thereof. "Function" A cobalt dihistidine complex is obtained by reacting histidine with a cobalt salt. Histidine may be L-form, DL-form, or D-form. Cobalt salts include cobalt oxide, cobalt hydroxide,
Halides and their hydrates, inorganic acids and organic acid salts, their hydrates, double salts, and organic cobalt compounds are used, and divalent inorganic salts are particularly preferably used. Next, the cobalt dihistidine complex is dissolved in a solvent. It is necessary to use an organic solvent as the solvent.
By using an organic solvent, separation performance is significantly improved compared to when water is used as a solvent. Among organic solvents, polyhydric alcohols such as ethylene glycol and glycerin are particularly preferably used because they dissolve the complex well, have a slow evaporation rate, and maintain the complex solution for a long period of time. It is also useful to mix lower alcohols such as methanol, ethanol, isopropyl alcohol, etc. with these polyhydric alcohols, as this lowers the viscosity of the complex solution and increases the diffusivity of the complex. The concentration of the complex in the complex solution should be 0.01 to 1.0, because if the concentration is low, the effect of facilitated transport will not be apparent, and if the concentration is too high, the diffusion of the complex will be suppressed, and properties will likely deteriorate due to duplication reaction. The range of mol/ is preferable, and the range of 0.1 to 0.6 mol/ is particularly preferable,
Particularly preferred is a range of 0.1 to 0.6 mol/. The material of the support that holds this complex solution is not particularly limited, but examples thereof include fluororesins such as polyvinylidene fluoride and polytetrafluoroethylene, polyolefin resins such as polyethylene and polypropylene, and other organic polymer materials. These supports may be non-porous or porous, or a composite thereof, but porous membranes are preferably used from the viewpoint of retention of the complex solution and oxygen permeability. Further, the shape thereof can be either a flat membrane shape or a hollow fiber shape. In the case of a porous membrane, the pore diameter is not particularly limited, but it is preferably in the range of 0.01 to 10 μm from the viewpoint of complex retention. These supports are held by casting or impregnating them with a complex solution. In particular, when a porous support is impregnated with a complex solution, it is necessary to impregnate the porous support homogeneously without leaving any air bubbles in order to achieve separation performance of the complex solution. For this reason, vacuum impregnation and pressurization operations are effective. "Example" Next, the present invention will be described with reference to an example. Examples 1-5 Cobalt dihistidine complexes were synthesized from L-histidine and cobalt acetate. Add 0.4 mol of this complex to each solvent shown in Table 1.
A complex solution was obtained by dissolving it at a concentration of . The porous supports shown in Table 1 were immersed in these complex solutions and evacuated for 15 minutes to allow impregnation, thereby producing gas separation membranes. After installing these gas separation membranes in a cell for measuring permeation characteristics, a mixed gas having a composition ratio of O 2 /N 2 = 21/79 was supplied, and the composition of the permeated gas was measured using a gas chromatograph. The permeation rate Q O2 and the separation coefficient αO 2 /N 2 between oxygen and nitrogen were determined. The measurement temperature was 20°C, and the gas pressure ratio between the supply side and the permeate side was 1.2Kg/ cm2 .
【表】
比較例 1
溶媒として水を用いたほかは、実施例1と同じ
条件で気体分離膜を作製した。
この分離膜性能は、以下のとおりであり、本発
明に較べ分離性能が極めて低い値であつた。
酸素透過速度 QO2=2.4×10-7cm3/cm2・s・cm
Hg
分離係数 αO2/N2=4
「発明の効果」
以上説明したように本発明は、酸素と窒素の分
離に従来にない優れた性能を示す気体分離膜を与
えることから、酸素を利用する医療、燃焼、廃水
処理等の技術分野にまた窒素を利用する穀物保存
などの分野に用いると効果的である。[Table] Comparative Example 1 A gas separation membrane was produced under the same conditions as in Example 1, except that water was used as the solvent. The performance of this separation membrane was as follows, and the separation performance was extremely low compared to that of the present invention. Oxygen permeation rate Q O2 = 2.4×10 -7 cm 3 /cm 2・s・cm
Hg Separation coefficient αO 2 /N 2 = 4 "Effects of the Invention" As explained above, the present invention provides a gas separation membrane that exhibits unprecedented performance in separating oxygen and nitrogen. It is effective when used in technical fields such as medicine, combustion, and wastewater treatment, and in fields such as grain preservation that utilize nitrogen.
Claims (1)
した液体と、該液体を保持するための支持体とか
らなることを特徴とする気体分離膜。 2 有機溶媒の一部又は全部が多価アルコールで
あることを特徴とする特許請求の範囲第1項記載
の気体分離膜。 3 支持体が平膜状または中空糸状の多孔質膜で
あることを特徴とする特許請求の範囲第1項また
は第2項記載の気体分離膜。[Scope of Claims] 1. A gas separation membrane comprising a liquid in which a cobalt dihistidine complex is dissolved in an organic solvent, and a support for holding the liquid. 2. The gas separation membrane according to claim 1, wherein part or all of the organic solvent is a polyhydric alcohol. 3. The gas separation membrane according to claim 1 or 2, wherein the support is a porous membrane in the form of a flat membrane or a hollow fiber.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6562588A JPH01242124A (en) | 1988-03-22 | 1988-03-22 | Gas-separating membrane |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6562588A JPH01242124A (en) | 1988-03-22 | 1988-03-22 | Gas-separating membrane |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH01242124A JPH01242124A (en) | 1989-09-27 |
JPH0477607B2 true JPH0477607B2 (en) | 1992-12-08 |
Family
ID=13292388
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6562588A Granted JPH01242124A (en) | 1988-03-22 | 1988-03-22 | Gas-separating membrane |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH01242124A (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2533014B2 (en) * | 1990-06-30 | 1996-09-11 | ユニオン・カーバイド・インダストリアル・ガセズ・テクノロジー・コーポレーション | Oxygen-permeable polymer membrane |
JPH04122412A (en) * | 1990-09-12 | 1992-04-22 | Hitachi Ltd | Method and equipment for dissolving oxygen |
US5411580A (en) * | 1991-07-31 | 1995-05-02 | Praxair Technology, Inc. | Oxygen-separating porous membranes |
WO2013080994A1 (en) * | 2011-12-01 | 2013-06-06 | 株式会社ルネッサンス・エナジー・リサーチ | Facilitated transport membrane manufacturing method |
-
1988
- 1988-03-22 JP JP6562588A patent/JPH01242124A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPH01242124A (en) | 1989-09-27 |
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