CO₂ hydrogenation to methanol on ZrO₂/Cu-ZnO catalyst: effect of ZrO₂ phases = CO₂ hydrogenation to methanol on ZrO₂/Cu-ZnO catalyst: effect of ZrO₂ phases

다국어 초록 (Multilingual Abstract)

CO₂ has been known to be a major chemical for a global warming, therefor the conversion of CO₂ to methanol has been considered as a promising method and it is an important industrial feedstock for the synthesis of various chemicals and a potential alternative to fossil fuels. In the present study, a series of ZrO₂(x)/CuO-ZnO (ZCZ) catalysts were prepared by physically mixing different phases of ZrO₂ (i.e. a - amorphous, m - monoclinic and t - tetragonal) with CuO-ZnO (7:3) prepared by co-precipitation method. The results showed that the physiochemical properties of the ZCZ catalyst were strongly influenced by the states of the ZrO₂ phases. In addition, the surface area of metallic copper and the ratio of strong Lewis acidic Zr⁴⁺ cation and strong Lewis basic O₂- anion were also influenced by ZrO₂ phases which was responsible for a higher CO₂ conversion and methanol productivity.