| 초록 |
In this work, sulfated metal oxides were prepared and used as solid acid catalysts to produce biodiesel from waste cooking oil(WCO). The catalysts were characterized by XRD, FE-SEM and FT-IR. The conversion of methyl ester was investigated by Gas Chromotygraphy analysis. It was found that among various sulfated metal oxides the sulfated bismuth oxide(S-Bi2O3) is the most active catalyst which can catalyze simultaneously the transesterification and esterification. The optimization of reaction parameters with S-Bi2O3 catalyst indicated that the maximum ester yield of 91% can be obtained at reaction temperature of 125℃, oil to methanol molar ratio of 1:20 and 5wt.% catalysts loading. |
