论文部分内容阅读
以金属有机骨架化合物ZIF-8为载体,Pd(C3H5)(C5H5)为金属有机前体,采用金属有机气相沉积方法在室温下制备了Pd@ZIF-8催化剂.Pd纳米粒子在ZIF-8载体上均匀分布,粒子尺寸约为1.5–3.5 nm.Pd@ZIF-8在温和条件下对多种卤代芳烃和苯硼酸的偶联反应均具有良好的活性.ZIF-8优异的化学稳定性不仅保证了其在制备过程中结构的完整,而且赋予了催化剂优异的循环使用性能.反应后Pd@ZIF-8材料的晶体结构、孔结构以及粒子分布均未发生明显的变化.
Pd (C 3 H 5) (C5H 5) is a metal organic precursor with metal-organic framework compound ZIF-8 as support, and Pd @ ZIF-8 catalyst was prepared by metal-organic vapor deposition at room temperature. On the average particle size of about 1.5-3.5 nm.Pd@ZIF-8 under mild conditions for a variety of halogenated aromatics and benzene boronic acid coupling reaction has good activity.ZIF-8 excellent chemical stability not only Which ensured the integrity of the structure during the preparation process and provided excellent recycle performance of the catalyst.The crystal structure, pore structure and particle distribution of the Pd @ ZIF-8 material did not change significantly after the reaction.