首次以具有优异磁学特性的锶铁氧体（Sr-Fe12O19）粒子为磁性基体,负载硫酸制备磁性催化剂SO42-/SrFe12O19。利用XRD、BET、VSM等表征手段,结合催化合成产物的表征,研究了磁性催化剂的表面性质和催化性能。结果表明制备出的SO42-/SrFe12O19的饱和磁化强度较大,易于分离。催化合成酯的研究发现催化剂重复使用6次,其作用下的酯化率仍达74%,表现出良好的回收效果。
The magnetic catalyst（SO2-4/SrFe12O19） was prepared by sulfuric acid with strontium ferrites（SrFe12O19） particle,which exhibited excellent magnetic properties as a magnetic matrix for the first time.With the characterization of catalytic synthetic products,surface properties and catalytic performance of the magnetic catalyst was analyzed by means of XRD,BET,VSM.The results indicated that the saturation magnetization of SO2-4/SrFe12O19 was strong and separate easily.The study of catalytic synthesis of ester showed that catalyst could be used repeatedly and yield of the ester was still above 74% after repeating 6 times.
参考文献
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