TiO₂-Supported Ru-Fe Catalysts for the Hydrodeoxygenation of Bis(2-hydroxyethyl) Terephthalate (BHET) Prepared by the Glycolysis of Polyethylene Terephthalate (PET).

ABSTRACT: Polyethylene terephthalate (PET) upcycling to petrochemical feedstocks proceeded through catalytic hydrodeoxygenation (HDO) of bis(2-hydroxyethyl) terephthalate (BHET) prepared by glycolysis of PET. TiO₂-supported ruthenium catalysts produced deoxygenated compounds that included aromatic and cyclohexyl molecules. A hydrogen-pressure-dependent deoxygenation pathway was inferred from the detected intermediates. With iron added to Ru/TiO₂ (Ru/Fe/TiO₂), the carbon yield to C6-C8 deoxygenated compounds reached 61.1%. Proximity of Ru to Fe oxides depleted the electron density of Ru, adjusted its catalytic activity, and suppressed excessive hydrocracking, which preserved high yields of C6-C7 hydrocarbons.

SUBMITTER: Lee Y 

PROVIDER: S-EPMC12767279 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature