Support Effect of Re Catalyst on Methanol Synthesis from CO2 and H2 under a Pressure of 5 atm

Article abstract of DOI:10.1246/bcsj.64.1664

Methanol synthesis by the reaction of CO2 with H2 over Re supported on ZrO2, CeO2, La2O3, and Al2O3 was studied under a pressure of 5 atm by use of a flow reactor.Methanol was formed over Re/CeO2, Re/ZrO2, and Re/La2O3, but not over Re/Al2O3 and ZrO2 alone.On the basis of XPS analysis, the active state of Re was suggested to be Re⁰ for Re/ZrO2 and Re/CeO2.For Re/Al2O3, Re was incompletely reduced, resulting in no formation of methanol.Methanol synthesis was inferred to proceed via CO in the case of Re/ZrO2, and via the reaction of CO2 with surface OH in the case of Re/CeO2 by FT-IR analysis.