Operando XAS and DFT Uncover Structure-Performance Relationships in Re/TiO₂ for Selective CO₂ Hydrogenation to Methanol.

ABSTRACT: The conversion of CO₂ into value-added chemicals, such as methanol, offers a promising pathway toward a renewable energy future. However, a precise kinetic control and a highly selective catalyst are necessary to overcome the thermodynamic preference for CO₂ hydrogenation to methane. Rhenium-based catalysts, particularly Re/TiO₂, demonstrate high activity and selectivity for methanol under high-pressure conditions. For example, at 100 bar and 200 °C, a methanol selectivity of 97-99% was obtained. Catalysts with 1 wt % Re and 5 wt % Re/TiO₂ were used to study the effect of cluster sizes. At 250 °C, the 1 wt % catalyst achieves 97% selectivity at 23% conversion, whereas 5 wt % Re/TiO₂ achieves 74% selectivity at 40% conversion, correspon

SUBMITTER: Gothe ML 

PROVIDER: S-EPMC12645472 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature