A novel anionic surfactant as template for the development of hierarchical ZSM-5 zeolite and its catalytic performance

A novel hierarchical ZSM-5 zeolite was successfully prepared by utilizing soft mesotemplate by hydrothermal treatment. TPAOH was used as a structure directing agent to create micropores and anionic surfactant HDSS were used to generate additional mesopores in the zeolite framework. The synthesized catalysts were characterized by using XRD, FT-IR,Al-27 and(29)Si NMR, SEM, TEM, NH3-TPD, TGA and N(2)adsorption methods. XRD and FT-IR analysis shows that the synthesized catalyst possesses pronounced crystallinity with characteristics MFI structure. Development of micro/mesoporosity in the samples was noted by SEM and is complementary to TEM and BET analysis. The thermal stability and acidity of the synthesized samples were confirmed by TGA and NH3-TPD technique. Catalytic activity of the synthesized ZSM-5 zeolites was examined for the oxidation of benzyl alcohol in presence of hydrogen peroxide. The results reveal that the surfactant assisted samples offer higher conversion and selectivity compared to conventional zeolites.