摘要：

Fe-doped SO42-/SnO2(STF) solid acid catalysts with different amounts of iron were prepared via co-condensation,followed by sulfation and calcination.These materials were characterized by Fourier transform infrared(FTIR) spectroscopy,X-ray powder diffraction(XRD),N2 adsorption-desorption analysis(BET),thermogravimetric(TG) analysis,and scanning electron microscopy(SEM).The Fe-doped catalysts exhibited more activity than undoped catalysts in acetalization reactions of 4-tert-butylcyclohexanone and diols.The catalytic acetalization of several ketones and 1,2-diols with the SO42-/SnO2-Fe2O3 catalysts(with the Fe/Sn molar ratio of 0.5) were studied.The influence of the reaction time and the amount of the catalysts on the acetalization were also investigated.In addition,the high performance of this Fe-modified catalyst was demonstrated in the Baeyer-Villiger oxidation of cyclic ketones.The catalyst can be recycled several times without any significant loss in catalytic activity.

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