磁性纳米固体超强酸SO4(2-)/Ti02-Fe3O4催化α-蒎烯异构化反应

摘要

为了提高纳米固体酸催化剂与液体产物的分离性能,制备了磁性纳米固体超强酸S04(2-)/Ti02-Fe304催化剂,并用透射电子显微镜(TEM),X射线衍射光谱(XRD)、红外光谱(IR)对催化剂进行结构表征.将其用于α-蒎烯异构化反应,通过单因素试验和正交试验,得出α-蒎烯异构化最适宜工艺条件为:反应温度120 ℃,催化剂用量2%,反应时间2h,此时α-蒎烯的转化率为92.07%,莰烯的选择性为58.96%.%In order to increase the separation of nano-solid superacid from liquid product, magnetic nanosolid superacid SO24-/TiO2-Fe3O4 catalysts were prepared. The transmission electron microscopy (TEM), X-ray diffraction spectra (XRD), infrared spectroscopy (IR) were used to characterize the structure of catalyst. The performance of the catalyst was investigated by isomerization reaction of α-pinene. By using single factor method and orthogonal test methods, the best processing conditions of the isomerization of α-pinene is obtained: reaction temperature is 120 ℃, the amount of catalyst is 2％,reaction time is 2 h. Under these processing conditions, the conversion of α-pinene is 92.1％ and the selectivity of camphene is 58.96％.