1. Department of Chemical Engineering, Kyoto University, Nishikyo, Kyoto 615-8510, Japan
2. Innovation & Development Department, Activated Carbon Business Division, Osaka Gas Chemicals Co., Ltd., 5-11-61 Torishima, Konohana, Osaka 554-0051, Japan
3. Research Initiative for Supra-Materials (RISM), Shinshu University, 4-17-1 Wakasato, Nagano 380-8553, Japan