FIELD: process engineering.
SUBSTANCE: invention relates to production of modified ion-exchange membranes on the base of commercially available cation-exchange homogeneous membranes "МФ-4СК" for use in electrodialysis apparatus concentration chambers. Initial cation-exchange membrane is placed in alcohol solution of tetraethoxysilane (TEOS) and held therein for 72 h. Then, water is added in molar ratio H2O : TEOS equal 4:1 as well as concentrated hydrochloric acid to reach solution pH varying from 1 to 2 for membrane to be additionally held for 24 h. Membrane is dried at 25°C to 180°C.
EFFECT: production of modified ion-exchange membranes on the base of commercially available cation-exchange homogeneous membranes "МФ-4СК".
2 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD TO CHANGE CHARACTERISTICS OF ELECTRODIALYSER WITH ALTERNATING CATION- AND ANION-EXCHANGE MEMBRANES | 2014 |
|
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|
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| METHOD OF MAKING BILAYER MEMBRANES | 2011 |
|
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| METHOD OF PRODUCING COMPOSITE CATION-EXCHANGE MEMBRANE | 2011 |
|
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| METHOD OF PRODUCING COMPOSITE ANION-EXCHANGE MEMBRANE | 2015 |
|
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| METHOD FOR OBTAINING COMPOSITE ANISOTROPIC CATION-EXCHANGE MEMBRANE | 2014 |
|
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| METHOD OF PRODUCING COMPOSITE MEMBRANE WITH FIXED POLYANILINE LAYER THICKNESS | 2012 |
|
RU2481885C1 |
| COMPOSITE ION-EXCHANGE MEMBRANE | 2009 |
|
RU2411070C1 |
| METHOD FOR MODIFYING AN ANION EXCHANGE MEMBRANE | 2022 |
|
RU2801038C1 |
| METHOD OF CONCENTRATING BASIC AMINO ACIDS THROUGH ELECTRODIALYSIS | 2009 |
|
RU2412748C2 |
