| 초록 |
Acetalization of glycerol has a great industrial importance due to the large production of glycerol in biodiesel industry. The products have been widely used as fuel additives and surfactant bases. Herein, glycerol conversion with acetone has been studied using mesoporous WO3/rod-type SBA-15 as a catalyst. A series of catalyst with varying WO3 loadings (5-20wt%) were prepared by impregnation method using tungsten precursor. The catalysts were characterized with XRD, Raman spectroscopy, SEM, N2 adsorption-desorption analysis and NH3-TPD. Among the catalysts, 15wt% WO3/rod-type SBA-15 was found to be the most active at 30℃. The catalyst exhibited 99% conversion with 97% selectivity for five-membered (1,3-dioxolane) cyclic product. The excellent performance of the catalyst is mainly due to their high specific surface areas, high pore volumes and strong surface acid properties. These results suggest that WO3/rod-type SBA-15 is highly active catalyst for the acetalization of glycerol. |
