摘要
用二－（２－乙基己基）磷酸（Ｐ２０４）作萃取剂，研究了几种萃取因素对Ｍｎ（Ⅲ）萃取率的影响。结果表明，在较低温度下，以较高的萃取剂浓度，从含有醋酸的硫酸溶液中，能接近完全萃取Ｍｎ（Ⅲ）。室温下，用１ｍｏｌ／ＬＰ２０４的正庚烷溶液对００２ｍｏｌ／ＬＭｎ（Ⅲ）＋４５ｍｏｌ／ＬＨＡＣ＋８ｍｏｌ／ＬＨ２ＳＯ４溶液进行等体积萃取，萃取率超过９０％。红外光谱证实，Ｍｎ（Ⅲ）是通过Ｐ２０４与Ｍｎ（Ⅲ）的醋酸配体配位而被萃取的。
Effect of several factors in the extraction of Mn(Ⅲ) using bis-(2-ethyl hexyl) hydrogen phosphate (P 204 ) as an extractant on the extraction efficiency of Mn(Ⅲ) is studied. Results show that Mn(Ⅲ) in sulphuric acid solution containing acetate acid can be extracted almost completely by n-hephane solution of P 204 . The extraction efficiency of Mn(Ⅲ) is over 90%, when extraction is carried out in 0 02 mol/L Mn(Ⅲ)+4 5 mol/L HAC+8 mol/L H 2SO 4 solution by 1 mol/L P 204 n-hephane solution. It is confirmed by IR spectroscopies that Mn(Ⅲ) is extracted in the form of acetate coordination compound.
出处
《中国锰业》
1997年第2期35-39,共5页
China Manganese Industry
关键词
锰离子
萃取
萃取剂
P204
Manganic ion Extraction Bis-(2-ethyl hexyl) hydrogen phosphate
