1. Dept. of Chemical Technology, Faculty of Science, Fuels Research Center; Chulalongkorn University; 254 Phayathai Road, Pathumwan Bangkok 10330 Thailand
2. Dept. of Chemical and Biological Engineering, Armour College of Engineering; Illinois Institute of Technology; 3300 South Federal Street, Chicago IL 60616
3. Center of Excellence on Petrochemical and Materials Technology, Chulalongkorn University; 254 Phayathai Road, Pathumwan Bangkok 10330 Thailand