Robust Ruthenium Catalysts Supported on Mesoporous Cyclodextrin-Templated TiO₂-SiO₂ Mixed Oxides for the Hydrogenation of Levulinic Acid to γ-Valerolactone.

ABSTRACT: In this paper, we present a versatile template-directed colloidal self-assembly method for the fabrication in aqueous phase of composition-tuned mesoporous RuO₂@TiO₂-SiO₂ catalysts. Randomly methylated β-cyclodextrin/Pluronic F127 supramolecular assemblies were used as soft templates, TiO₂ colloids as building blocks, and tetraethyl orthosilicate as a silica source. Catalysts were characterized at different stages of their synthesis using dynamic light scattering, N₂-adsorption analysis, powder X-ray diffraction, temperature programmed reduction, high-resolution transmission electron microscopy, high-angle annular bright-field and dark-field scanning transmission electron microscopy, together with EDS elemental mapping. Results reveale

SUBMITTER: Decarpigny C 

PROVIDER: S-EPMC7915766 | biostudies-literature | 2021 Feb

REPOSITORIES: biostudies-literature