Synergetic effect of metal–support for enhanced performance of the Cu–ZnO–ZrO2/UGSO catalyst for CO2 hydrogenation to methanol. Issue 1 (21st November 2022)

• Record Type: Journal Article
• Authors: Vu, Thi Thanh Nguyet; Desgagnés, Alex; Fongarland, Pascal; Vanoye, Laurent; Bornette, Frédéric; Iliuta, Maria C.
• Is Part Of: Catalysis science & technology. Volume 13:Issue 1(2023)
• Page Start: 81
• Page End: 99
• Publication Date: 2022-11-21
• Subjects: Catalysis -- Periodicals; 541.395
• DOI: 10.1039/d2cy01317g
• Languages: English
• ISSNs: 2044-4753

Abstract

Abstract : Novel Cu–ZnO–ZrO2 /UGSO catalysts for CO2 hydrogenation to methanol were developed using a metallurgical residue as catalytic support, focusing on (i) the synergy of Cu/Zn/Zr and UGSO composition and (ii) UGSO modification, on catalytic activity and stability. Abstract : Novel Cu–ZnO–ZrO2 /UGSO catalysts for CO2 hydrogenation to methanol were developed using a metallurgical residue (UGSO) as the catalytic support, with special focus on understanding the effect of (i) synergy between Cu/Zn/Zr and UGSO composition on the catalytic activity and stability, and (ii) UGSO modification on the structure–activity relationship of the developed catalysts. Zr acts as a structure promoter to enhance Cu dispersion and facilitates CO2 conversion. The highest methanol yield is achieved for CZ9Zr/UGSO (10 wt% Cu, 7.5 wt% Zn, 9 wt% Zr), attributable to the highest (i) Mg/Cu surface ratio and (ii) interfacial contact Cu–ZrO2 . Further modification of UGSO by H2 O2 (UGSO-H) increases by 3 times the surface area and endows CZ9Zr/UGSO-H with the best CO2 conversion and 57% higher methanol yield at 240 °C/20 bar compared to a commercial Cu–ZnO-based catalyst. These findings may pave the way for effective utilization of the no-marketable-value residue as a catalytic support in other CO2 conversion processes.