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AssigneeGKSS-Forschungszentrum Geesthacht GmbH
InventorsKatrin Ebert, Bastian Ruffmann, Joachim Koll, Axel Wenzlaff
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The invention relates to a membrane for the separation of material mixtures by the principle of vapor permeation or pervaporation, in particular for the dewatering of organic solvents, comprising at least one support layer and at least one material-selective separation layer located thereon, and a method for production of such a membrane. The material-selective separating layer is made from polyvinyl alcohol, containing at least one metallic element and/or a derivative thereof. The method includes the addition of polyvinyl alcohol to a solvent, adding an organometallic compound to the solvent/polyvinyl alcohol mixture, and then applying the solvent/polyvinyl alcohol/organometallic compound mixture to the support layer as the material-selective separating layer.
A membrane for the separation of material mixtures according to vapor permeation or pervaporation methods, especially for the dewatering of organic solvents, the membrane comprising at least one support layer and at least one material-selective separation layer on the support layer, the material-selective separation layer comprising organometallic compounds and polyvinyl alcohol, which contain at least one of a metallic element and metallic element derivative and wherein the organometallic compounds are crosslinked with the polyvinyl alcohol.
A method for making a membrane for the separation of material mixtures by permeation or pervaporation methods, especially for the dewatering of organic solvents, said method comprising the steps of:
Dependencies are inferred from the claim text.