1. Fraunhofer Institute for Ceramic Technologies and Systems, IKTS-Hermsdorf branch; Michael-Faraday-Strasse 1 07629 Hermsdorf Germany
2. BASF SE; Membrane Separation Processes, GCP/TC-L 540; 67056 Ludwigshafen Germany
3. Leibniz University Hannover; Institute for Physical Chemistry and Electrochemistry; Callinstrasse 3A 30167 Hannover Germany
4. University of Köln; Institute of Physical Chemistry; Luxemburger Strasse 116 50939 Köln Germany