中文摘要：

采用共沉淀的方法制备了不同Fe掺杂量的SO42-／SnO2·Fe2O3固体超强酸催化剂．利用傅里叶变换红外（FTIR）光谱，粉末X射线衍射（XRD），N2吸附-脱附实验（BET），热重（TG）分析和扫描电镜（SEM）等方法对样品进行了表征．考察了所得催化剂对4-叔丁基环己酮与乙二醇缩合反应的催化性能．实验结果表明，与未经过掺杂改性的SO4 2-／SnO2固体酸催化剂相比，改性后催化剂的催化性能得到了改善．研究了以Fe／Sn摩尔比为0．5的SO4 2-／SnO2-Fe2O3固体酸为催化剂，部分醛酮类化合物与乙二醇及1，2-丙二醇的缩合反应．考察了反应时间、催化剂用量等因素对反应的影响．同时，将所得催化剂应用于环酮Baeyer-Villiger氧化反应中，催化剂表现出良好的催化活性。且催化剂具有一定的循环使用性．

英文摘要：

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-Fe203 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-modifled 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.