硫酸亚铁铵制备实验的改进  

Improvement of Preparation Experiment of Ammonium Ferrous Sulfate

作　　者：徐敏[1] 

机构地区：[1]成都理工大学材料与化学化工学院,四川成都610059

出　　处：《当代化工》2015年第1期37-38,共2页Contemporary Chemical Industry

摘　　要：硫酸亚铁铵制备的经典方法是经过蒸发,浓缩,冷却来得到晶体,既耗时长,Fe2+又易氧化,影响硫酸亚铁铵产率及等级。此次改进利用复盐的溶解度比组成它的简单盐溶解度小的特点,而硫酸亚铁铵又不溶于乙醇及水与乙醇可任意比互溶的特征,通过常压过滤于乙醇中,即刻可得浅蓝绿色硫酸亚铁铵单斜结晶,省去经典方法中的蒸发、浓缩,冷却步骤,同时也有利于防止Fe2+被氧化。Classic method of preparing ammonium ferrous sulfate is to gain crystals via evaporation, concentration and cooling processes. The method needs long time and Fe2 ＋ is easily oxidized, which can affect product yield and level of ammonium ferrous sulfate. Because double salt solubility is lower than single salt solubility, ammonium ferrous sulfate is insoluble in ethanol, but water and ethanol are mutually soluble, blue green ammonium ferrous sulfate monoclinic crystalline can be obtained through the atmospheric pressure filtration, so evaporation , concentration and cooling processes in the classic method may be saved, and Fe2 ＋ can be prevented from oxidation.

关 键 词：硫酸亚铁铵 结晶 溶解度 

分 类 号：TQ115[化学工程—无机化工]