| 초록 |
Mesoporous MgO-TiO2 sorbents with different amount of magnesium and titanium were synthesized via cooperative self-assembly of the metal precursor and the soft template P123 triblock copolymer in ethanolic solution under acidic conditions. It was observed that, the phase was transformed in the order, MgTiO3 (0.5-2.0) ＜ MgO-MgTi2O4 (3.0-4.0) ＜MgO-Mg2TiO4 (＞5.0) and the CO2 adsorption increased in the order MgTiO3 (0.5-2.0) ＜MgO-Mg2TiO4 (5.0) ＜MgO-Mg2TiO4 (4.0)＜ MgTi2O4 (3.0). For CO2 capture application, formation of MgO-MgTi2O4 is beneficial analogous to MgAl2O4 spinal phase. In the process of CO2 adsorption, high surface are (111.4m2/g), pore volume (0.45cm3/g) as well as appropriate basic sites of Mg-O-Ti makes it a plausible candidate for CO2 adsorption. The results suggest that, the developed sorbent has good thermal stability, and recyclability. This work was supported by the National Research Foundation of Korea (NRF) funded by the Ministry of Education (Grant number: NRF-2013R1A1A2060638). |
