From amorphous to crystalline: Transformation of silica membranes into silicalite-1 (MFI) zeolite layers

The transformation of microporous, amorphous silica membranes into b-oriented silicalite-1 (MFI) zeolite layers via in-situ crystallisation was investigated. The effect of synthesis parameters, such as the type and concentration of the silica precursor, crystallisation time and temperature, on the morphology of silicalite-1 (MFI) zeolite...

Direct Oxidation of Benzene to Phenol: investigation of the active iron species in [Fe,Al]MFI catalysts by 57Fe Mössbauer spectroscopy

Steam-treated isomorphously substituted [Fe,Al]MFI zeolite is known to exhibit superior catalytic performance in the direct oxidation of benzene to phenol, using N2O as oxidant (BTOP). However, despite extensive efforts, the nature of the active sites in the [Fe,Al]MFI catalyst for the BTOP reaction is still largely unknown. However, recent...