1. Laboratory of Engineering Thermodynamics, University of Kaiserslautern, Erwin-Schrödinger-Strasse 44, 67663 Kaiserslautern, Germany
2. Lonza AG, Rottenstrasse 6, 3930 Visp, Switzerland
3. Department of Chemistry, University of Kaiserslautern, Erwin-Schrödinger-Strasse 54, 67663 Kaiserslautern, Germany