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以碱性阴离子交换树脂Amberlite IRA-900为载体,Pd(C3H5)(C5H5)为金属有机前体,采用金属有机气相沉积法在室温下制备了Pd@IRA-900多相催化材料.紫外-可见光谱分析证明前体和树脂骨架之间的化学作用以及树脂本身的孔道结构使得Pd纳米粒子均匀分散在载体上.透射电镜结果显示钯纳米粒子的平均尺寸为2.6 nm.在较温和的条件下Pd@IRA-900对多种卤代芳烃和苯硼酸的Suzuki偶联都具有良好的催化活性,并且催化剂重复使用5次之后依然具有很好的活性.此外,对树脂载体进行碱性交换处理后可得到一种双功能催化材料Pd@IRA-900(OH),该催化剂在不加入碱的条件下也可以催化碘苯和苯硼酸的Suzuki偶联反应.
Pd (C3H5) (C5H5) was used as a metal organic precursor with Amberlite IRA-900 as basic anion exchange resin and Pd @ IRA-900 heterogeneous catalytic material was prepared by metal-organic vapor deposition at room temperature. Spectroscopic analysis showed that the chemical interaction between the precursor and the resin skeleton and the pore structure of the resin itself led to the uniform dispersion of Pd nanoparticles on the support.The TEM showed that the average size of palladium nanoparticles was 2.6 nm.When the mild Pd @ IRA-900 for a variety of halogenated aromatic and benzene boronic acid Suzuki coupling have good catalytic activity, and the catalyst after repeated use of 5 still has good activity.In addition, the resin carrier after alkali exchange treatment can be A bifunctional catalysis Pd @ IRA-900 (OH) was obtained, which can catalyze the Suzuki coupling reaction of iodobenzene and benzeneboronic acid without addition of base.