Influence of the Ferrierite Zeolite Synthesis Method on Physicochemical and Catalytic Characteristics in the N2O Decomposition Reaction

Zeolites are widely used in oil processing and environmental protection, especially in abatement of toxic compounds and greenhouse gases, like nitrous oxide (N2O). Ferrierite zeolites are among the perspective but least studied zeolites. Conventional synthesis includes hydrothermal autoclave treatment during 30-60 h. New approaches to the fast synthesis of ferrierite are needed. In the present work, ferrierite zeolite (FER) was synthesized by different methods: microwave-assisted, hydrothermal and hydrothermal + seeds. The structure, texture and acidic properties of the samples were investigated by XRD, low-temperature adsorption-desorption of N-2, scanning electron microscopy and DRIFT spectroscopy using adsorption of CD3CN as a probe molecule. Fe-FER catalysts were prepared by the incipient wetness impregnation method using Fe(III) acetylacetonate as an iron precursor. The catalytic performances of the prepared materials were studied in the N2O decomposition reaction. The FER-MW-6 sample prepared by the microwave-assisted method exhibited better physicochemical and catalytic characteristics.