"SOLID CATALYST WITH IONIC LIQUID LAYER (SCILL) FOR THE DIRECT HYDROGENATION OF CO2 TO METHANOL"

The potential of converting CO2 into valuable products, such as methane, dimethyl ether, methanol, and gasoline-range hydrocarbons, offers a promising solution for reducing CO2 emissions and addressing fossil fuel depletion. This study aimed to pioneer a novel approach by developing a Solid Catalyst with Ionic Liquid Layer (SCILL) for the direct hydrogenation of CO2 into methanol. This was achieved by applying an ionic liquid (IL) layer to a commercial Cu/ZnO/Al2O3 catalyst. Initially, a thorough assessment of the thermal stabilities of various ILs was carried out using both static and dynamic thermogravimetric analysis (TGA). The ILs demonstrating exceptional thermal stability were chosen to create SCILL catalysts with a 10% IL loading. During reaction testing, the SCILL catalysts exhibited superior CO2 conversion, outperforming the commercial catalyst's activity under similar conditions. Furthermore, the introduction of Li[NTf2] in the SCILL systems effectively stabilized the system, countering the negative effects of water deactivation observed in the undoped SCILL.