“高锰酸钾的制备”实验研究  

Experimental Study on Preparation of Potassium Permanganate

作　　者：褚佩 彭焕军 杨欢 刘建萍 李原芳[1] 胡小莉[1] CHU Pei;PENG Huan-jun;YANG Huan;LIU Jian-ping;LI Yuan-fang;HU Xiao-li(School of Chemistry and Chemical Engineering,Southwest University,Chongqing 400715,China;Qingdao Fifty-Eighth Middle School,Qingdao Shandong 266100,China;Chongqing Yucai High School,Chongqing 400050,China;Chongqing Forty-Eighth Middle School,Chongqing 400700,China)

机构地区：[1]西南大学化学化工学院,重庆400715 [2]山东省青岛第58中学,山东青岛266100 [3]重庆市育才中学校,重庆400050 [4]重庆第48中学,重庆400700

出　　处：《西南师范大学学报（自然科学版）》2019年第11期147-150,共4页Journal of Southwest China Normal University(Natural Science Edition)

基　　金：西南大学教育教学改革研究项目(2016JY018)

摘　　要：大学本科无机制备课程中,"高锰酸钾的制备"实验采用固体碱熔法先制备锰酸钾,再用6.0 mol/L的HAc溶液歧化,经过滤、蒸发浓缩、结晶,得到产品.由于反应条件难掌握,学生实验成功率较低,产品纯度差,产率也低.基于此,对影响产品质量和产率的因素如碱熔条件、歧化反应pH值、蒸发浓缩方式、浓缩体积等进行了深入研究,在优化条件下制得的产品晶型好,产率高.Undergraduate Inorganic Preparation course, the "preparation of potassium permanganate" experiment using solid alkali fusion method first to prepare potassium manganate, and then disproportionated with 6.0 mol/L HAc solution, filtered, evaporated, concentrated, crystallized to obtain products. The reaction conditions are difficult to grasp, the success rate of student experiments is low, the purity of the products is poor, and the yield is low. Based on this, influential factors such as alkali fusion conditions, pH value of disproportionation reaction, evaporation concentration method, and concentration volume were deeply studied. Under the optimized conditions, the obtained product has good crystal form and high yield.

关 键 词：高锰酸钾 制备 实验条件 优化 

分 类 号：G642.423[文化科学—高等教育学] O614[文化科学—教育学]