Immobilization of salen molybdenum complex on dendrimer functionalized magnetic nanoparticles and its catalytic activity for the epoxidation of olefins

被引：28
作者：
Niakan, Mahsa [1 ]
Asadi, Zahra [1 ]
Masteri-Farahani, Majid [2 ]
机构：
[1] Shiraz Univ, Coll Sci, Dept Chem, Shiraz 71454, Iran
[2] Kharazmi Univ, Fac Chem, Tehran, Iran
来源：
APPLIED SURFACE SCIENCE | 2019年 / 481卷
基金：
美国国家科学基金会;
关键词：
Magnetic nanoparticles; Dendrimer; Immobilization; Molybdenum; Epoxidation; SCHIFF-BASE COMPLEX; ACTIVATED-CARBON; HIGHLY EFFICIENT; PALLADIUM; OXIDATION; MANGANESE; MCM-41; HECK;
D O I：
10.1016/j.apsusc.2019.03.088
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
A novel catalyst was prepared by the immobilization of salen molybdenum complex on dendrimer functionalized magnetic nanoparticles. Fourier transform infrared spectroscopy (FT-IR), thermogravimetric analysis (TGA), N-2 adsorption-desorption isotherms, X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy-dispersive X-ray spectroscopy (EDX), X-ray photoelectron spectroscopy (XPS), vibrating sample magnetometry (VSM), inductively couple plasma atomic emission spectroscopy (ICPAES), and elemental analysis were used to characterize the catalyst. The synthesized catalyst was highly active and selective for the epoxidation of various olefins in the presence of tert-butyl hydroperoxide (TBHP) as oxidant. Notably, the catalyst could be separated easily by applying an external magnet and recycled up to six cycles without significant decrease in catalytic activity and selectivity.
引用
收藏
页码：394 / 403
页数：10
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