1. Institut für Technische und Makromolekulare ChemieRWTH Aachen University Worringerweg 2 52074 Aachen Germany
2. Dipartimento di Chimica Industriale “Toso Montanari”Università di Bologna Viale Risorgimento 4 40136 Bologna Italy
3. Center for Automotive Catalytic Systems AachenRWTH Aachen University Schinkelstr. 8 52062 Aachen Germany
4. Faculty of Material Science and CeramicsAGH University of Science and Technology Mickiewicza 30 30-059 Kraków Poland