锂锰氧化物中锰的平均化合价的测定研究

The Reaserch on the Determination of Average Mn Valency in Lithium Mangnese Oxide

用盐酸羟胺作还原剂 ,用 EDTA配位滴定法测定锂锰氧化物中总锰量 ,同时用草酸钠标准溶液还原 ,再用KMn O4返滴定的方法测定试样中高价锰得到的总电子数 ,两者结合计算氧化锂锰氧化物中锰的平均化合价 ,该方法简便、可靠、准确度高 。

Using NH 2OH·HCl as reducing agent,the total manganese was determined by EDTA coordinate titration,at the same time,the total electron number transferred in oxide reduction was determined by the standard oxalic acid method.Then the averge Mn valency was calculated by the above two results determined.The method was simply and the accuracy was better than others.This is a perfect method for determination.