Engineering CuZnOAl₂O₃ Catalyst for Enhancing CO₂ Hydrogenation to Methanol.

ABSTRACT: The CuZnOAl₂O₃ catalyst shows excellent activity and selectivity in the reaction of CO₂ hydrogenation to methanol as a consequence of its controllable physicochemical properties, which is expected to offer an efficient route to renewable energy. In this study, CuZnOAl₂O₃ catalysts are engineered by a special pretreatment, constructing a carbonate structure on the surface of the catalyst. Compared to the unmodified catalyst, the optimized catalyst (CZA-H-C1) not only exhibits an improved methanol selectivity of 62.5% (250 °C and 3 MPa) but also retains a minimal degree of deactivation of 9.57% over a 100 h period. By characterizing the catalysts with XRD, TEM, XPS and in situ DRIFTS spectroscopy, it was found that the surface carbonate

SUBMITTER: Shi P 

PROVIDER: S-EPMC11946585 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature