中文摘要：

采用逐层自组装方法制备了磁性Fe3O4@IRMOF-3复合材料,通过浸渍法将Pd纳米粒子负载到Fe3O4@IRMOF-3上,得到多功能催化剂Fe3O4@IRMOF-3/Pd.用粉末X射线衍射（XRD）、傅里叶变换红外光谱（FTIR）、透射电子显微镜（TEM）、扫描电子显微镜（SEM）及原子吸收（AAS）等方法对材料的组成和结构进行了表征,并考察了催化剂在Knoevenagel缩合反应、Suzuki偶联反应和烯烃催化加氢反应中的催化性能.结果表明,磁性Fe3O4@IRMOF-3/Pd催化剂在Knoevenagel缩合反应和Suzuki偶联反应中均表现出较好的催化活性和一定的循环稳定性.在烯烃的催化加氢反应中,催化剂可以高效催化多种烯烃的加氢反应,并表现出对底物的尺寸选择性.在苯乙烯的催化加氢反应中,催化剂循环使用9次,转化率依然大于99%,并且催化剂结构没有明显变化.

英文摘要：

Pd nanoparticles supported on Fe3O4@ IRMOF-3 fabricated by a step-wise assembly method was prepared and evaluated as a potential heterogeneous catalyst for Knoevenagel condensations,Suzuki-coupling and hydrogenations. The results demonstrated that the magnetic multifuctional material was active and stable as a heterogeneous catalyst for the reactions mentioned above. Remarkabaly,It was an effective and size selective catalyst for alkenes. Furthermore,it could be magnetically recovered and reused for at least 9 times without obvious loss of activity.