Preparation of SO4~2-/ Fe2O3-TiO2-Nd2O3 Solid Acid and its Activity for the Synthesis of Menthyl Acetate

摘要

This paper reports the preparation of SO4~(2-)/ Fe2O3-TiO2-Nd2O3 (designated as SFTN) by combustion method, which were characterized by FT-IR and NH3-TPD techniques respectively. The results showed that SFTN kept the typical covalence S=0 bond structure of SO4~(2-)/M_xO_y(SM) solid acids, and both Lewis and Bronsted acid sites existed; SFTN exhibited higher activity for the esterification of acetic acid and menthol, with 98.30% yield of menthyl acetate. The higher activity was attribute to the enhancement of acidic properties of the catalyst by the addition of Nd2O3 to SO4~(2-)/Fe2O3-TiO2(SFT).