| 초록 |
For the reduction of atmospheric CO2 emission, considerable achievements have been made in CO2 hydrogenation to various chemicals such as alcohols, lower olefins and fuels. However, the synthesis of aromatics from one-pass CO2 hydrogenation is still a great challenge owing to the extreme inertness of CO2 and higher C–C coupling barrier. Therefore, the mesoporous Zn/Al2O3 by varying Zn content was investigated for the CO2 hydrogenation to methanol and dimethyl ether (DME). At a relatively higher temperature, ZnO and ZnAl2O4 were active for CO2 hydrogenation and Lewis acidic Al2O3 sites were active for methanol dehydration to DME. Furthermore, Zn/Al2O3 in combination with HZSM-5 was prepared to directly synthesize aromatics from oxygenates formed by CO2 hydrogenation. |
