Zeolite/metal-organic framework composites

Zeolite imidazolate frameworks (ZIFs) are composited with zeolite (NaP and NaY) using ship-in-bottle and sol-gel methods through two different approaches. Two synthesized nanocatalysts showed that ZIF-۸ composite with zeolite can stabilize its structure as a catalyst in acidic environment. The prepared Zeolite@ZIF-۸ nanocomposites were characterized by FT-IR, XRD, SEM, BET, MAP, TGA, NH۳-TPD and ICP analyses. The synthesized composites were used as catalysts for the Aldol condensation of ۲-X and ۴-X benzaldehyde derivatives, esterification reaction of acetic acid with four different alcohols and the transesterification reaction of animal fats, vegetable oils and waste oils. The obtained results show that the efficiency of the esterification reaction for both catalytic composites is ۹۸.۵% and ۹۴.۳%, respectively, and ۷۸.۱% for the transesterification reaction. The results show that Zeolite@ZIF-۸ composite catalyst bring about ۹۱.۴% for and Aldol condensation reaction.

کلیدواژه ها:

Zeolite ، ZIF-۸ ، Nanocatalyst