乙醇对制备硫酸亚铁铵晶体纯度的影响

Ethanol’s Effect on Preparation of Ammonium Ferrous Sulfate Crystal

制备晶体的过程中,为了除去晶体表面的水分常采用乙醇淋洗晶体。根据相似相溶原理,氧气在乙醇中的溶解度远高于在水中的,乙醇淋洗将会加速硫酸亚铁铵氧化。理论分析和实验论证表明,不可以用未除氧处理的乙醇淋洗易氧化晶体,如硫酸亚铁铵。

In crystal preparation, ethanol is frequently employed to remove the moisture on the crystal surfaces. However, this process could severely oxidize the products due to the dissolved oxygen in ethanol. Herein, by taking the preparation of ammonium ferrous sulfate crystals as an example, we proposed and demonstrated that the deoxidized ethanol could largely enhance the quality of the easy-oxidized crystals.