Preparation and Character Study of the Magnetic Nano-Size Solid Acid Catalyst

Colloidal Fe3O4 was prepared and the strength of magnetism of which was obviously influenced by the ratio of Fe3 + and Fe2 + and the concentration of NaOH solution. A series of the magnetic nano solid acid catalysts were better prepared by the ultrasonic waves, and the characters of these catalysts were preliminarily tested. When they were all used in the esterification reaction(acetic acid and butyric mellow ), the best conversation was 84%. These catalysts which were all nano-size could be isolated from other matters according to their magnetism. Moreover, their magnetism, conversation and recycle percentage were affected by different ratios of Zr(SO4) 2 and Fe3O4. By other determinative methods like XRD and specific surface area, the structure of the best catalyst in the presently experimental condition was supposed.,