化工学报Issue(3)：921-928,8.DOI:10.3969/j.issn.0438-1157.2014.03.022
超顺磁催化剂H3PW12O40/Fe3O4@SiO2的制备、结构表征及在汽油烷基化脱硫中的应用
Preparation and structure characterization of superparamagnetic supported catalyst H3PW12O40/Fe3O4@SiO2 and its application in olefinic alkylation desulfurization
摘要
Abstract
Fe3O4@SiO2 nanocomposite was prepared via modified Stöber method and used as catalyst support. Superparamagnetic supported catalystsprepared by loading H3PW12O40 (HPW) onto Fe3O4@SiO2 support through a wet impregnation method, were used for alkylation reaction, and characterized by X-ray diffraction (XRD), Fourier transform infrared (FT-IR), NH3-temperature programmed desorption (TPD), scanning electron microscope (SEM), N2-adsorption and vibrating sample magnetometer (VSM). Their physicochemical characterization revealed that HPW had been immobilized and dispersed on Fe3O4@SiO2. Moreover, 40%(mass) HPW loading catalyst, been of high magnetization 30.1 emu·g-1, mesoporous structure and the surface area 303.6 m2·g-1, could be considered to be a proper catalyst for olefinic alkylation of thiophenic sulfur (OATS) and they can be easy separated by external magnetic field. In addition, their catalytic activity was also investigated in alkylation reaction of a model mixture of thiophene and 1-octene, and the conversion of thiophene was up to 85.5%after 2 h at 160℃.关键词
超顺磁性/烷基化/磷钨酸/催化剂/复合材料/二氧化硅Key words
superparamagetism/alkylation/phosphotungstic acid/catalyst/composites/silica分类
能源科技引用本文复制引用
熊小龙,刘自力,许翠霞,秦祖赠..超顺磁催化剂H3PW12O40/Fe3O4@SiO2的制备、结构表征及在汽油烷基化脱硫中的应用[J].化工学报,2014,(3):921-928,8.基金项目
国家自然科学基金项目（21076047,21276054）。@@@@supported by the National Natural Science Foundation of China (21076047,21276054) （21076047,21276054）
