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Postsynthetic treatment of mesoporous FAU type zeolite with zinc(II), iron(II) and iron(III) ions

Faujasite type zeolites (FAU) showcase properties that make them great potential catalysts for methanol-to-olefins (MTO) conversion.1 Their catalytic properties can be further enhanced by creating mesopores using surfactants, such as cetrimoium bromide (CTAB) or etching the crystals with NH4F in order to facilitate intercrystal diffusion.2 Thus prepared materials are then further modified by wet impregnation with various zinc(II), iron(II) and iron(III) salts.3 Incorporation of the transition metal ions in the zeolite framework creates larger number of Brønsted’s and Lewis’s acid sites that are catalytic canters for MTO conversion.

Zinc ; FAU ; wet impregnation ; iron

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