MnO_x中锰离子的价态和含量的研究  

A Study on the Valence State and Content of Manganese Ion Included in MnO_x

作　　者：胡华[1] 方德[1] 石再莹[1] 马娟[1] 梅笛[1] 何峰[1] 

机构地区：[1]武汉理工大学硅酸盐建筑材料国家重点实验室,湖北武汉430070

出　　处：《中国锰业》2013年第3期9-12,共4页China Manganese Industry

基　　金："十二五"国家科技支撑计划项目(2011BAE29B02);国家级大学生创新创业计划项目(20121049701023)

摘　　要：采用选择性溶解和计算相结合的方法,快速实现锰氧化物(MnOx)中Mn2+、Mn3+和Mn4+含量的测定,并计算出锰的平均价态。探讨了溶解温度、时间以及硫酸铵、缓冲溶液的用量等主要因素对测试结果的影响。研究表明:MnO2的最佳溶解时间为50 min,MnO和Mn3O4的最佳硫酸铵用量为20 mL,测试得到的MnOx中锰的平均价态与理论价态一致。此测试方法对MnOx中锰含量及其平均价态的测量准确可靠,方便快速。The content of Mn2＋ , Mn3＋and Mn4＋and the average valences of manganese ion included in MnOx were quickly calculated, by using the method of integrating the selective dissolution with the calculation. This article made an effect study of dissolution temperature and time, as well as the consumption of ammonium sulfate and buffered solution on the results. The research shows that the best dissolving time was 50 min for Mn02 and the amount of the ammonium sulfate was 20 mL during the test of MnO and Mn304. Meanwhile, the average valence of manganese ion was in agreement with the theory valence. This method is easily accurate and quickly reliable to test the average valences of pure MnOx.

关 键 词：MNOX 选择性溶解 平均价态 测试条件 

分 类 号：O614.711[理学—无机化学]