CO₂ hydrogenation to methanol: Synergy effects of In-Cu supported on mesoporous Al₂O₃ = CO₂ hydrogenation to methanol: Synergy effects of In-Cu supported on mesoporous Al₂O₃

다국어 초록 (Multilingual Abstract)

The direct conversion CO₂ to value-added chemicals is crucial in mitigating the global warming problem. We prepared the bimetallic catalysts consisting of copper (Cu) and partially reduced indium (In) metal oxide supported on the ordered mesoporous alumina (m-Al), which was synthesized by successive impregnation of In and Cu precursors on the m-Al, to verify the synergy effects of In-Cu metals for CO₂ hydrogenation to methanol. The catalytic activity of the bimetallic In-Cu/m-Al was modified by varying the molar ratio of In to Cu, which altered the physiochemical and geometrical properties of the catalyst. The oxygen vacancies formed on the CuO and In₂O₃ surface enhanced the activation of CO₂ to form methanol, and the undesired RWGS reaction was greatly suppressed by the strong adsorption of CO₂.