Magnetic core-shell nanoparticle-supported Sc (III): A novel and robust Lewis acid nanocatalyst for the selective oxidation of sulfides to sulfoxides by H2O2 under solvent-free conditions
作者:Donya Khaledian、Amin Rostami、Shamileh Rouhani
DOI:10.1016/j.catcom.2019.02.021
日期:2019.5
modified Fe3O4 magnetic nanoparticles [MNPs-PhSO3-Sc(OTf)2] and characterized using scanning electron microscopy (SEM), inductively coupled plasma analysis (ICP), thermogravimetric analysis (TGA), Fourier transform infrared spectroscopy (FT-IR), energy dispersive X-ray spectroscopy (EDX) and vibrating sample magnetometer (VSM) techniques. The MNPs-PhSO3-Sc(OTf)2 was applied as a magnetically recyclable
首次将三氟甲磺酸scan载于改性的Fe 3 O 4磁性纳米颗粒[MNPs-PhSO 3 -Sc(OTf)2 ]上,并使用扫描电子显微镜(SEM),电感耦合等离子体分析(ICP),热重分析(TGA)进行表征),傅立叶变换红外光谱(FT-IR),能量色散X射线光谱(EDX)和振动样品磁力计(VSM)技术。MNPs-PhSO 3 -Sc(OTf)2用作可循环利用的非均质路易斯酸纳米催化剂,使用过氧化氢作为绿色氧化剂,可将多种硫化物选择性氧化为亚砜,在室温下无溶剂条件下可产生90-98%的收率。也可以将其回收并重复使用至少15个反应周期,而不会损失活性。