1. Department of Chemistry and Catalysis Research Center, Technische Universität München, 85747 Garching, Germany
2. Institute of Catalysis Research and Technology, Karlsruhe Institute of Technology, 76344 Eggenstein-Leopoldshafen, Germany
3. Clariant Produkte (Deutschland) GmbH, 83052 Bruckmühl, Germany
4. Institute for Chemical Technology and Polymer Chemistry, Karlsruhe Institute of Technology, 76131 Karlsruhe, Germany