磁性固体超强酸SO_4^(2-)/TiO_2-Fe_3O_4的制备及表征  

Preparation and characterization of magnetic nano-solid superacid SO_4^(2-)/TiO_2-Fe_3O_4

作　　者：吴春华[1] 马晓涛 赵黔榕[3] 

机构地区：[1]西南林业大学木质科学与装饰工程学院,云南昆明650224 [2]石林县鹿阜中学化学教研组,云南石林652200 [3]云南师范大学化学化工学院,云南昆明650092

出　　处：《化学研究与应用》2010年第11期1401-1404,共4页Chemical Research and Application

基　　金：国家自然科学基金(30700632);云南省自然科学基金(2006C0034Q)资助

摘　　要：固体超强酸是近年来研制开发出的一类新型催化材料,其克服了传统液体酸催化剂易腐蚀设备、污染环境、副反应多、产物选择性低等缺点。尤其是近年来纳米技术的应用,使得纳米级固体超强酸的研究颇受人们的青睐。In order to increase the separation of the nanometer solid superacid from liquid product,the nanometer solid superacid SO42-/TiO2-Fe3O4catalysts were prepared in this study.The transmission electron microscopy（TEM）,X-ray diffraction spectra （XRD）,infrared spectroscopy （IR） were used to characterize the structural characterization of catalyst.The performance of the catalyst was studied by the isomerization reaction of α-pinene.The conditions of preparing catalysts were obtained as follows,the impregnation of sulfuric acid concentration is 0.5mol/L,calcinations temperature is 400℃,calcinations time is 3 h and the ratio of Ti to Fe is 70：1.The transformation rate of α-pinene is 88.6%,and the selectivity of Camphene is 55.1%.

关 键 词：磁性纳米固体超强酸 Α-蒎烯 结构表征 

分 类 号：O614.4[理学—无机化学]