Hydrophobically modified UiO-66 supported CuZn catalysts for CO2 hydrogenation to methanol-data

Water contact angle measurements and infrared spectroscopy (IR) results indicated that the catalysts prepared using UiO-66-NH2 and UiO-66-NH-C18 supports exhibited excellent hydrophilic and hydrophobic properties, respectively.

After optimizing the Cu/Zn molar ratio, the hydrophobic Cu3Zn1/C18 catalyst showed the optimal catalytic performance under conditions of 240 °C, 3 MPa, and a space velocity (GHSV) of 3600 mL/(g·h), with a CO2 conversion of 1.5 %, methanol selectivity of 70.6%, CO selectivity of 29.4%, and a methanol space-time yield (STY) of 40.7 mgMeOH·gCu-1·h-1. In comparison, the hydrophilic Cu3Zn1/NH2 catalyst showed a CO2 conversion of 1.8%, methanol and CO selectivities of 46.8% and 53.2%, and a methanol STY of 17.2 mgMeOH·gCu-1·h-1.