仲辛醇萃取钽的机理

来源期刊：中南大学学报(自然科学版)1983年第4期

论文作者：张启修 廖平婴 韦香南

文章页码：65 - 71

关键词：仲辛醇； 萃取过程； 溶剂化数； 有机相； 萃合物； 混合萃取剂； 机理； 红外光谱图； 饱和法； 饱和容量

摘    要：本文研究了仲辛醇从HF+H₂SO₄溶液中萃钽的机理,用红外光谱法及饱和有机相分析法研究了萃合物的组成。萃取反应按水化-溶剂化机理进行,萃合物组成为[（mROH·nRCOR’）·（H₂O）w·H⁺]yTaF_x,其中x=7和6,相应y=2和1,用工业仲辛醇不稀释萃取时,（m+n）的平均值为5—6。硫酸起盐析剂的作用。

Abstract: The mechanism of extraction of tantalum by sec-octyl alcohol from HF-H₂SO₄ system has been investigated. By means of the method of IR Spectral and chemical analyses of the loaded organic phases, the composition of the extracted species was shown to be [（mROH·nRCOR’）·（H₂O）ω·H⁺]_y TaF_x, where x = 7 and 6, y = 2 and 1 respectively. The average value of the （m + n） is about egual to 5 -- 6 when the extractant is not diluted by kerosene. The data show that sec-octyl alcohol extracts complex acid, which is hydrated and solvated in the cation part. The sulfuric acid acts as a salting-out agent in the extracting process.