Palladium nanoparticles supported on natural nanozeolite clinoptilolite as a catalyst for ligand and copper-free C–C and C–O cross coupling reactions in aqueous medium
作者:Seyed Meysam Baghbanian、Horieh Yadollahy、Mahmood Tajbakhsh、Maryam Farhang、Pourya Biparva
DOI:10.1039/c4ra11411f
日期:——
In this article, Pd0-nanoparticles supported on natural nanozeolite clinoptilolite (CP) were successfully synthesized, and the catalytic activity of the nanocatalyst was investigated in C–C and C–O coupling reactions, namely the Sonogashira and Ullmann condensation reactions in an aqueous medium. The nanocatalyst was characterized by various techniques such as powder-XRD, BET, SEM, TEM, HRTEM, TEM-EDS
在本文中,成功合成了负载在天然纳米沸石斜发沸石(CP)上的Pd 0-纳米颗粒,并在C-C和C-O偶联反应(即Sonogashira和Ullmann缩合反应)中研究了纳米催化剂的催化活性。中等的。纳米催化剂通过各种技术进行表征,例如粉末XRD,BET,SEM,TEM,HRTEM,TEM-EDS,ICP-OES和XPS。从电子显微镜(SEM)的研究可以推断出,这些颗粒大多为球形或椭圆形,直径范围为25至80 nm。一项HRTEM研究表明Pd 0负载在纳米沸石CP上的纳米粒子的平均直径约为10 nm。负载的钯纳米粒子在芳基炔烃和二芳基醚的高产率合成中显示出优异的催化活性。此外,纳米催化剂可以循环使用多次,而不会明显降低催化活性。