【摘要】 探讨了高温下的催化相转化反应。研究了高温下制备纳米级铁酸锌的最佳条件 :反应体系初始 ｐＨ =8. 0～ 1 0 .5,反应温度 1 0 0～ 1 2 0℃ ,反应物初始浓度 0 .45～ 1 . 2ｍｏｌ/Ｌ ,反应时间 2～ 5ｈ。用ＸＲＤ、ＴＥＭ和磁强仪对产物进行了表征。与低温下制备的产物相比 ,纳米粒子的晶化程度有所提高 ,剩磁和矫顽力已不再为零更多还原

【Abstract】 The preparation of nanoparticles ZnFe2O4 by catalytic phase transformation at high temperature is studied.The best conditions of preparing nanoparticles ZnFe2O4 are as following:the initial pH=8.0～10.5,reaction temperature 100～120 ℃,the initial concentration of reactant 0.45～1.2 mol/L,reaction time 2～5 h.The product was characterized by TEM,XRD.Its magnetic property was examined.The results showed that the crystallite produced at high temperature is better than that produced at low temperature.The remanence and coercivity have not been equal to zero yet.更多还原