[1] Inst. of Phys. and Chemical Research, 2-1 Hirosawa, Wako-shi 351-01, Japan
[2] Department of Applied Chemistry, Muroran Institute of Technology, 27-1 Mizumoto-cho, Muroran-shi 050, Japan
[3] Department of Chemical Engineering, Hiroshima University Kagamiyama, Higashi-Hiroshima-shi 739, Japan