Mechanism of Extraction and Stripping of Iron (Ⅲ) with HDEHP as Extractant and n-Octane as Diluent

刘会洲; 于淑秋; 陈家镛

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Mechanism of Extraction and Stripping of Iron (Ⅲ) with HDEHP as Extractant and n-Octane as Diluent

更新时间：2025-12-16

- Mechanism of Extraction and Stripping of Iron (Ⅲ) with HDEHP as Extractant and n-Octane as Diluent
- CIESC Journal Issue 3, (1991)
- 作者机构：
  
  中国科学院化工冶金研究所,中国科学院化工冶金研究所,中国科学院化工冶金研究所 ,北京,北京,北京
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Online First：25 June 1991，
  
  Published：25 June 1991
- 稿件说明：
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刘会洲, 于淑秋, 陈家镛. Mechanism of Extraction and Stripping of Iron (Ⅲ) with HDEHP as Extractant and n-Octane as Diluent[J]. CIESC Journal, 1991, (3).
DOI：

刘会洲, 于淑秋, 陈家镛. Mechanism of Extraction and Stripping of Iron (Ⅲ) with HDEHP as Extractant and n-Octane as Diluent[J]. CIESC Journal, 1991, (3). DOI：

摘要

本文研究了P_(204)-正辛烷萃取体系

在硫酸介质中萃取和反萃Fe(Ⅲ)的规律.从胶体化学和结构化学的角度

通过对P_(204)-正辛烷负荷铁有机相组成、水含量的变化规律以及傅里叶变换红外光谱和动态光散射的测定表明

P_(204)萃取铁的过程是反相胶团形成过程

而反萃过程是反相胶团被破坏的过程.从而提出了一个新的可能的萃取反应机理.

Abstract

Di (2-ethylhexyl) phosphoric acid (HDEHP) is an extractant with wide applications. Through the investigation of the typical extractant systems by FT-IR and photon correlation spectroscopy and measurements of the composition and water content in the extracted organic phase

the results showed that iron (Ⅲ) was extracted mainly in unhydrated form. The extraction of iron(Ⅲ) with HDEHP was through the formation of reverse micelle in the organic phase. HDEHP in an inert solvent was in dimer form H2A2 and it probably would be converted to monomer form during extraction. The stripping of iron(Ⅲ) in the organic phase with high concentration sulfuric acid was through a process of destruction of the reverse micelle formed during ex-traction.

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