Base-free cascade glycerol conversion to lactic acid over Pd-Bi nanoparticles immobilized in metal-organic framework Zr-UiO-66

• Published in: Applied catalysis. A, General Vol. 674; p. 119603
• Main Authors: Ten, S.A., Kurmanova, M.D., Kurmanbayeva, K., Torbina, V.V., Stonkus, O.A., Vodyankina, O.V.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 25.03.2024
• Subjects: Bifunctional catalyst; Bismuth; Glycerol oxidation; Lactic acid; Palladium; UiO-66; Bismuth; Palladium; UiO-66; Bifunctional catalyst; Lactic acid; Glycerol oxidation
• ISSN: 0926-860X; 1873-3875
• DOI: 10.1016/j.apcata.2024.119603

In the present work, the Pd-Bi nanoparticles combined with catalytically active support based on the Zr-UiO-66 metal-organic framework are prepared and investigated as bifunctional catalysts in the reaction of the base-free cascade glycerol conversion to lactic acid. The obtained materials are characterized by XRD, TEM, TGA, low-temperature N2 adsorption, XRF, and NH3-TPD. The unique structure and tunability of hybrid materials allow obtaining the lactic acid with a 58% selectivity at a 19% glycerol conversion without the addition of any base. The best hybrid catalysts preserve their structure after catalytic runs and can be recycled at least 4 times without leaching of the active component. [Display omitted] •Pd-Bi NPs immobilized in Zr-UiO-66 catalyze base-free glycerol conversion.•Sulfonation of organic linker in MOF leads to higher selectivity.•Unique Pd-Bi@HSO3-UiO-66 structure defines ability of selective cascade conversion.•Material preserves its structure after catalysis and can be recycled at least 4 times.