FAU-MFIインターゼオライト中間体のメソ多孔性と形状選択性の組み合わせによる再生可能キシレン製造

Interzeolite Transformation Intermediates (ITIs) were synthesized via microwave-assisted conversion of FAU to MFI phases and applied in the transformation of 2,5-dimethylfuran (DMF) and ethanol into xylenes. Structural, textural, and acidic properties were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), NMR, Raman, and NH₃-TPD. Catalytic tests, including Friedel-Crafts alkylation and triisopropylbenzene cracking, revealed that hybridization enhanced molecular accessibility and acid site distribution. The optimized material, HyZ-38, which preserved features of both FAU and MFI, achieved a high xylene yield of 45.2%. This performance was linked to the balance between mesoporosity and shape selectivity, enabling better diffusion and fewer side reactions. Additionally, microwave-assisted synthesis reduced both time and energy consumption. These results underscore the potential of interzeolite transformation as a sustainable strategy for designing efficient catalysts for biomass valorization and renewable aromatic production under demanding reaction conditions.