Nanofiltration (NF) can be used to isolate nonvolatile compounds from solutions containing ionic liquids (IL). This was shown for the mixtures bromophenol blue/IL and lactose/IL. In both cases the product was rejected while the ionic liquid permeated. Alternatively, the rejection of the ionic liquid is possible as well. Such separations are possible because nanofiltration membranes are selective towards size and charge of the components.
Ionische Flüssigkeiten haben in den letzten Jahren wachsende Bedeutung erlangt. Sie bilden eine neuartige Klasse von Lösungsmitteln mit nicht-molekularem, ionischen Charakter und stellen schon jetzt eine attraktive Alternative zu konventionellen organischen Lösungsmitteln dar [1 ± 3]
N a n o f i l t r a t i o n 959Chemie Ingenieur Technik (75) 7 | 2003 S. 959±961
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