| 초록 |
Conversion of CO2 to value-added chemicals (e.g., CO, CH3OH, CH4, HCs) has been actively studied to lower the atmospheric CO2 concentration. In our previous study, mesoporous CuAl2O4 spinel catalysts showed the outstanding activity for converting CO2 to CO that can be used as a key intermediate for producing hydrocarbons via Fischer-Tropsch (FT) process. Inspired from that result, we introduced FT-active Fe catalysts to CuAl2O4 for direct conversion of CO2 to hydrocarbons. We prepared Fe-based catalysts in which various loadings of Fe were supported on CuAl2O4 (Fe/CuAl2O4). We analyzed the characteristics of catalysts through XRD, TEM, XPS, NH3-TPD, and CO2-TPD. The catalytic results of CO2 hydrogenation using Fe/CuAl2O4 showed that the CO2 conversion were enhanced than CuAl2O4. Moreover, C2+ hydrocarbons were obtained as main products in Fe/CuAl2O4, whereas CO was major when sole CuAl2O4 was used. The results suggest that the introduction of Fe to CuAl2O4 is effective for design of multifunctional catalyst for CO2 conversion to value-added hydrocarbons. |
