1. Helmholtz Institute Erlangen-Nürnberg for Renewable Energy (IEK-11)Forschungszentrum Jülich GmbH Egerlandstr. 3 91058 Erlangen Germany
2. Department of Chemical and Biological EngineeringFriedrich-Alexander University Erlangen-Nürnberg Egerlandstr. 3 91058 Erlangen Germany
3. Department of Chemistry and PharmacyFriedrich-Alexander University Erlangen-Nürnberg Egerlandstr. 3 91058 Erlangen Germany