三草酸合铁(Ⅲ)酸钾合成条件的改进与探索

Conditions of the Formation for Potassium tris(oxalato)ferrate(Ⅲ) trihydrate:Improvement and Exploration

针对无机化学综合实验三草酸合铁(Ⅲ)酸钾合成过程中存在的问题,对[K3Fe(C2O4)3].3H2O的合成条件进行探索和优化.实验结果表明:在用热水(40℃)洗涤FeC2O4,40℃时逐滴加入H2O2后煮沸30s,利用浓缩后挂棉线的方式进行结晶等条件下,得到粒度较大的翠绿色晶体,可改善实验结果的重现性、提高产品的产率和纯度.

Aiming at the previous problems, it tries to optimize conditions of the formation for Potassium tris（oxalato）ferrate（lll） trihydrate. The experimental results show that, FeC2O4 washed with hot water, when the water tempreture is 40℃, H2O2 is added into the water drop by drop, then it must be boiled for 30s. After consentration, it is crystalized and bigger viridis crystals are gotten. Meanwhile, repeatability of experimental result is improved, productivity and purity of the products are enhanced.