两段氧化法制备四氧化三锰  

A two stage oxidation method to prepare manganic manganous oxide

作　　者：粟海锋[1] 高家利[1] 文衍宣[1] 胡雪玲[1] 童张法[1] 

机构地区：[1]广西大学化学化工学院,广西南宁530004

出　　处：《无机盐工业》2007年第6期12-14,共3页Inorganic Chemicals Industry

基　　金：广西教育厅自然科学基金项目(桂教科研[2003]22号)

摘　　要：为了优化两段氧化法制备四氧化三锰的工艺,分别采用单因素试验和正交试验探讨反应温度、锰离子的加料速度、氨锰物质的量比、固相氧化温度、固相氧化时间对总锰质量分数的影响。试验得出制备四氧化三锰的工艺条件为:原料氨锰物质的量比2∶1,锰离子的加料速度30 mL/h,反应温度95℃,固相氧化温度200℃,固相氧化时间3 h。在最佳条件下制备的四氧化三锰是γ-Mn3O4,总锰质量分数为71.0%,平均粒径为1.23μm。In order to optimize the process of preparing manganic manganous oxide by two stage oxidation method, single factor experiment and orthogonal experiment were adopted respectively to investigate the influence of operating conditions, such as reaction temperature ,feed rate of Mn^2＋ , the amount -of- substance ratio of ammonia and Mn^2＋ , solid state oxidation temperature and time on the mass fraction of total manganese. The obtained optimum condition was ： the amount - of - substance ratio of ammonia and Mn^2＋ 2： 1, feed rate of Mn^2＋ 30 mL/h, reaction temperature 95℃, solid state oxidation temperature 200℃, solid state oxidation time 3 h. Under the optimum conditions, the product was γ - Mn3O4 with the average diameter of 1.23 μm and its total manganese mass fraction was 71.0%.

关 键 词：四氧化三锰 两段氧化 加料速度 

分 类 号：TQ137.12[化学工程—无机化工]