可磁性回收钴-铁酸盐纳米颗粒负载12-钨磷酸催化剂上硫选择性氧化及模型油氧化脱硫（英文）

作     者：Ezzat Rafiee Nasibeh Rahpeyma 

作者机构：Faculty of ChemistryRazi University Institute of Nano Science and Nano TechnologyRazi University 

出 版 物：《催化学报》 (Chinese Journal of Catalysis)

年 卷 期：2015年第36卷第8期

页      面：1342-1349页

核心收录：

学科分类：081705[工学-工业催化] 0817[工学-化学工程与技术] 08[工学] 0703[理学-化学] 

主　　题：选择性氧化 氧化脱硫 回收模型 催化剂 磷钨酸 纳米颗粒 钴铁氧体 傅里叶变换红外光谱仪 

摘      要：Silica-coated CoFe2O4 nanoparticles were prepared and used as a support for the immobilization of 12-tungstophosphoric acid, to produce a new magnetically separable catalyst. This catalyst was characterized using X-ray diffraction, wavelength-dispersive X-ray spectroscopy, Fourier-transform infrared spectroscopy, scanning electron microscopy, transmission electron microscopy, laser particle size analysis, and vibrating sample magnetometry. The catalyst showed high activity in the selective oxidation of thioethers and thiophenes to the corresponding sulfones under mild conditions. The catalytic activity of the nanocatalyst in the oxidative desulfurization of model oil was investigated. The effect of nitrogen-containing compounds on sulfur removal from the model oil was also evaluated. The catalyst showed high activity in the oxidative desulfurization of diesel. The catalyst can be readily isolated from the oxidation system using an external magnet and no obvious loss of activity was observed when the catalyst was reused in four consecutive runs.