Molybdenum Catalysts Supported on Porous Aromatic Frameworks in Epoxidation of Olefins

A novel catalyst was synthesized by immobilizing a MoO₂(acac)₂ complex on the surface of a porous aromatic framework functionalized with pyridine-2-carboxaldehyde (PAF-30-NPy). The immobilization was confirmed by IR spectroscopy, X-ray photoelectron spectroscopy, and elemental analysis. The synthesized catalyst was tested in the epoxidation of cyclohexene, cycloheptene, 1-hexene, 1-octene, styrene, and trans-stilbene. The effects of the solvent type and the oxidant content on the olefin conversion were described. The catalyst reusability was further tested, and its activity was evaluated.