MnO_4^-和Mn^(2+)反应产物的探讨  

Discussion of the reaction products between MnO_4^- and Mn^(2+)

作　　者：朱刚[1] 周跃花[1] 焦宝娟[1] ZHU Gang, ZHOU Yue-hua, JIAO Bao-juan(School of Chemical Engineering, Xi＇an University, Xi＇an 710065, China)

机构地区：[1]西安文理学院化学工程学院,陕西西安710065

出　　处：《实验室科学》2018年第3期19-21,共3页Laboratory Science

基　　金：陕西高等教育教学改革研究项目(项目编号:15BY102);西安市科技计划项目(项目编号:2016CXWL08)

摘　　要：高锰酸根离子MnO_4^-和二价锰离子Mn^(2+)之间的氧化还原反应是一个常见的化学反应,在通常条件下的水溶液中,反应产物是二氧化锰MnO_2。然而,当制备方法和反应条件改变时,反应产物还是MnO_2吗?把这一问题引入无机合成化学教学中,要求学生课前查阅文献并在课堂上交流。通过讨论,学生对该反应有了新的认识,体会到制备方法和反应条件对制备产物的重要影响。反应产物可以是不同结构和形貌的MnO_2,还可能是四氧化三锰Mn_3O_4或碱式氧化锰MnOOH。The redox reaction between permanganate ions and manganese ions is a common chemical reaction. Under normal conditions,the reaction product is manganese dioxide in aqueous solution.However,is the reaction product always manganese dioxide when preparation methods and reaction conditions change？ The question is introduced into teaching of inorganic synthetic chemistry. And students are required to consult literatures before class and to share information in class. Through discussion,students have a new understanding of the reaction and realize the important influences of preparation methods and reaction conditions on reaction products. The reaction products can be manganese dioxide with different structures and morphologies,trimanganese tetraoxide or manganese oxyhydroxide.

关 键 词：MnO4^- MN^2+ MNO2 MnOOH MN3O4 

分 类 号：O614.7[理学—无机化学]