Hierarchical Fe-ZSM-5 zeolites were hydrothermally synthesized.
5">A silane coupling agent of 3-glycidoxypropyltrimethoxysilane was used.
Direct oxidation of benzene to phenol was conducted on the hierarchical Fe-ZSM-5.
5">The hierarchical Fe-ZSM-5 showed better activity and stability.
n-Butane uptake experiments indicated the improvement of internal mass-transfer.