Properties of new inorganic membranes prepared by metal alkoxide methods Part II: New inorganic-organic anion-exchange membranes prepared by the modified metal alkoxide methods with silane coupling agents
| Autor: | Mariko Hosaka, Makoto Kogure, Jae-Jin Kim, Haruhiko Ohya, S. McFadzean, Russel Paterson |
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| Rok vydání: | 1997 |
| Předmět: |
Ion exchange
Chemistry Inorganic chemistry Substrate (chemistry) Filtration and Separation Microporous material Biochemistry Chloride Ion chemistry.chemical_compound Membrane Electrical resistivity and conductivity Alkoxide medicine General Materials Science Physical and Theoretical Chemistry medicine.drug |
| Zdroj: | Journal of Membrane Science. 126:161-169 |
| ISSN: | 0376-7388 |
| DOI: | 10.1016/s0376-7388(96)00289-x |
| Popis: | Four types of inorganic-organic anion exchangeable membranes were prepared on a microporous alumina substrate by dipcoating with solution containing Si(OC 2 H 5 ) 4 , C 2 H 5 OH, H 2 O, CH 3 COOH, two silane coupling agents in molar ratio 1:6.8:2:0.03:0.02, and on a silica membrane by liquid-phase coupling method with two solutions containing C 6 H 5 CH 3 , H 2 O, 2-(trimethoxysilyl)ethyl-2-pyridine in molar ratio 11:0.06:0.04 or C 2 H 5 OH, H 2 O, N -trimethoxysilylpropyl- N , N , N -trimethylammonium chloride in molar ratio 21:0.06:0.06. The alumina substrate and silica membrane showed cation exchangeability, but membranes dip-coated and liquid-phase coupled showed anion exchangeability and their ion-exchange capacity per unit area of membrane surface were in the range 4–9 × 10 −3 meq. cm −2 . The static transport number for liquid-phase coupled membranes was in the range of 0.6–0.9, but for dip-coated membranes it was 0.5. |
| Databáze: | OpenAIRE |
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