1. Chemical Technology Department, Shikoku Research Institute, Inc., 2109 Yashima-nishimachi, Takamatsu, Kagawa 761-0192, Japan, Petroleum and Chemical Engineering Department, College of Engineering, Sultan Qaboos University, Post Office Box 33, Al-Khoud, 123 Muscat, Sultanate of Oman, and Department of Energy Solution, Shimizu Corporation, 1-2-3 Shibaura, Minatoku, Tokyo 105-8007, Japan