Che Chul1,2,3, Youn-Sik Lee Byung1,2,3, Samuel Cheon1,2,3, Sang Yup Lee1,2,3
1 Samgwang Goha Chem Co., Ltd, 571 Yongje-dong, Iksan 570-350, Korea
2 School of Chemical Engineering and Technology, Chonbuk National University, Chonju 561-756, Korea
3Department of Chemistry, Kunsan National University, Kunsan 573-701, Korea