1. Department of Chemical System
Engineering, School of Engineering, The University of Tokyo,7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
2. Japan Society of the Promotion of Science, 5-3-1 Kojimachi, Chiyoda-ku,
Tokyo 102-0083, Japan
3. Tokyo Gas Co., Ltd., 1-7-7, Suehiro-cho, Tsurumi-ku,
Yokohama-shi, Kanagawa 230-0045,
Japan