Abstract
Structured filamentous zeolitic materials were synthesized by ZSM-5 coatings deposited on the glass fibrous supports. A homogeneous coverage of the support filaments was obtained via the synthesis of MFI crystals in fluoride-containing media at neutral pH ∼7. These materials combine the open macrostructure of woven filamentous fabrics with well-defined microstructure of ZSM-5 crystals. The samples were characterized by BET, XRD and SEM methods. The gas-phase partial oxidation of benzene by N2O to phenol was investigated as a function of the chemical composition of the support and the ZSM-5 synthesis procedure. The fluorinated zeolitic materials demonstrated the highest activity (above 20% of benzene conversion) with a 97% selectivity towards phenol formation.
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