| 초록 |
Ti-MCM-22 was prepared by a direct hydrothermal synthesis method using SiO2-TiO2 xerogel. Characterization of the Ti-MCM-22 was carried out using XRD, SEM, UV-vis spectroscopy, and BET surface area measurement. The catalytic property of the Ti-MCM-22 prepared using SiO2-TiO2 xerogel was tested by 1-hexene epoxidation using H2O2 (30 %, aqueous). Compared with Ti-MCM-22 prepared by conventional process, Ti-MCM-22 prepared using SiO2-TiO2 xerogel exhibited significantly enhanced conversion and higher H2O2 selectivity. Increased Ti amount in the substrate mixture resulted in further increase in 1-hexene conversion at the expense of minor drop in H2O2 selectivity. |
