中文关键词:纳米二氧化硅MCM-41表面修饰多相催化Suzuki偶联 英文关键词:Nano Silica, MCM-41, Surface Modification, Heterogeneous catalysis, Suzuki Reaction. 基金项目:江西省教育厅自然科学基金（GJJ161127）和国家自然科学基金（51303074）资助项目。

作者	单位	E-mail
曹锰	南昌工程学院	theonenimi@163.com
王振希	南昌工程学院	wangzx1978@126.com
张健	南昌工程学院
徐胜	南昌工程学院
张尚玺	南昌工程学院
柳阳	南昌工程学院
戴欣	南昌工程学院
江新德	南昌工程学院
吴锦辉	南昌工程学院

摘要点击次数:1275 全文下载次数:0 中文摘要: 含氮膦配体的钯配合物被负载于纳米二氧化硅和MCM-41表面。由此得到的两种新型多相钯催化剂SiO2@PNPPdCl2（1）和MCM-41@PNPPdCl2（2）均通过SEM（EDX）、TEM（SAED）、XRD、FT-IR、ICP-MS和TGA等手段进行全面表征。微观结构表明，这两种纳米颗粒具有完全不同的结构，1为不规则球体，2具有蜂窝孔状结构。本文进一步研究了纳米粒子1和2在Suzuki偶联反应中以乙醇和水为溶剂的温和条件下的催化性能。研究显示两种催化剂均具有较好的基团耐受性，循环利用四次的平均产率分别为81%(1)和89%(2)。它们的催化性能也略有不同，催化剂1的催化速率高于2，催化剂2具有较好的循环利用性能。 英文摘要: Palladium compounds containing diphosphine ligand with N atom were immobilized on the surface of Nano silica and MCM-41 respectively. The resulting two novel heterogeneous Pd catalysts SiO2@PNPPdCl2(1) and MCM-41@PNPPdCl2(2) were fully characterized by SEM(EDX), TEM(SAED), XRD, FT-IR, ICP-Ms and TGA. Microstructure tests show those two nanoparticles have completely different structures, 1 has an irregular sphere structure and 2 has a honeycomb structure. They were investigated as catalysts for Suzuki reactions in EtOH/H2O(V/V=3/2) system to provide target products with different yields. The two catalysts had good group tolerance, and their average yields in four cycles were 81% (1) and 89% (2) respectively. Their catalytic properties are also slightly different. The catalytic rate of catalyst 1 is much faster than that of 2, while catalyst 2 has better recycling performance. 查看全文查看/发表评论下载PDF阅读器 相关附件：支持信息版权转让声明书支持信息。 -->