1. Clean Fuel Research Group, National Institute of Advanced Industrial Science and Technology (AIST), 16-1 Onogawa, Tsukuba, Ibaraki 305-8569, Japan, Department of Mechanical Engineering, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan, Center for Coal Utilization Japan (CCUJ), 7th Floor, Sumitomo Gaien Building, 24 Daikyocho, Shinjuku-ku, Tokyo 160-0015, Japan, and Department of Biological & Chemical Engineering, Gunma University, 1-5-1 Tenjin, Kiryu, Gunma 376-8515, Japan