[1] KTH, Royal Inst Technol, Dept Chem Engn & Technol, SE-10044 Stockholm, Sweden
[2] Washington Univ, Dept Energy Environm & Chem Engn, St Louis, MO 63130 USA
[3] Eka Chem AB, SE-44580 Bohus, Sweden
[4] AKZO Nobel Cent Res BV, NL-6800 SB Arnhem, Netherlands