1. Kaneka Corporation, 5-1-1, Torikai-Nishi, Settsu, Osaka 566-0072, Japan
2. Kaneka Belgium N.V., Nijverheidsstraat 16, 2260 Westerlo-Oevel, Belgium
3. School of Chemical Engineering and Department of Energy Science, Sungkyunkwan University, 300 Cheoncheon-dong, Jangan-gu, Suwon 440-746, South Korea