| 초록 |
Methanol synthesis via CO2 hydrogenation is an important part of the strategy for generating clean energy as we attempt to reduce our dependency on fossil fuels. Herein, we have synthesized different polymorphs of ZrO2 i.e. amorphous, monoclinic, and tetragonal by coprecipitation method, then impregnated 10 wt% of ZnO and evaluated their activity for methanol synthesis. The surface interaction of CO2, H2, and reduction behavior of the catalysts vary remarkably with the phases of ZrO2 due to the presence of different strong Lewis acidic Zr4+ cation and strong Lewis basic O2- anion. The structure-activity relationship was developed with in-depth characterization and catalytic experiments for CO2 hydrogenation to methanol, which revealed a strong dependence of CO2 conversion and methanol selectivity on the phase of the ZrO2. |
