1. Yale Center for Green Chemistry and Engineering Yale University New Haven Connecticut 06511 USA
2. Institute of Materials and Environmental Chemistry Eötvös Loránd Research Network Research Centre for Natural Sciences P.O. Box 286. Budapest Hungary
3. Department of Organic Chemistry and Technology Budapest University of Technology and Economics Szent Gellért tér 4. 1111 Budapest Hungary
4. Institut für Technische und Makromolekulare Chemie RWTH Aachen University Worringerweg 252074 Aachen Germany
5. Faculty of Engineering Research Centre of Biochemical Environmental and Chemical Engineering MOL Department of Hydrocarbon & Coal Processing University of Pannonia Egyetem u. 10 H-8200 Veszprém Hungary