用甲基膦酸二甲庚酯(P₃₅₀)自盐酸溶液中萃取钍的研究

来源期刊：中南大学学报(自然科学版)1980年第3期

论文作者：郑清远 罗重庆

文章页码：88 - 93

关键词：甲基膦酸二甲庚酯； 萃合物； 盐酸溶液； 有机相； 分配比； 萃取体系； 低浓度； 斜率法； 溶剂化反应； 饱和法

摘    要：研究了用甲基膦酸二甲庚酯（P350）在室温下自盐酸溶液中萃取钍（IV）的性质和萃合物组成;也讨论了P350萃取钍的机理。研究结果表明,自高酸且有氯化锂存在的溶液中萃取时生成的萃合物是ThCl₄·3P350,而自低酸且有氯化锂存在的溶液,或自高酸但没有氯化锂存在的溶液中萃取时生成的萃合物都是ThCl₄·2P350。

Abstract: The extraction of thorium（IV）from hydrochloric acid solution by Di（1 methyl heptyl）methyl phosphonate(P₃₅₀)in kerosene at room temperaturehas been studied.The mechanism of thorium extraction by P₃₅₀ also has beendiscussed.The results showed that when the thorium was extracted from so-lutions containing high concentration of hydrochloric acid in presence of li-thium chloride the extractable species is ThCl₄·3P₃₅₀,and from solutions con-taining low concentration of hydrochloric acid in presence of lithium chlorideor from solutions containing high concentration of hydrochloric acid but inabsence of lithium chloride the extractable species both are ThCl₄·2P₃₅₀.