1. Technical Chemistry, Department of Chemistry, Chemical-Biological Centre, Umeå University, S-90187 Umeå, Sweden
2. Industrial Chemistry and Reaction Engineering, Department of Chemical Engineering, Johan Gadolin Process Chemistry Centre, Åbo Akademi University, FI-20500 Åbo-Turku, Finland
3. Wallenberg Wood Science Center, Department of Chemistry, Technical Chemistry, Chemical-Biological Center, Umeå University, 901 87 Umeå, Sweden