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与铀(Ⅵ)比较起来,对铀(Ⅳ)的萃取性质研究得较少。Schmid 等人研究了用 TBP从硝酸溶液中萃取铀(Ⅳ),用二乙基己基磷酸(DEHPA)从高氯酸溶液中萃取铀(Ⅳ)。他们分离出了铀(Ⅳ)的 DEHPA络合物,同时描述了这种络合物。Koch 和Schwind 用三辛酰硝酸铵从硝酸盐介质中萃取
Compared with uranium (Ⅵ), the extraction properties of uranium (Ⅳ) are less studied. Schmid et al. Studied the extraction of uranium (IV) from nitric acid solution using TBP and the extraction of uranium (IV) from perchloric acid solution using diethyl hexyl phosphate (DEHPA). They isolated the DEHPA complex of uranium (IV) and described the complex. Koch and Schwind were extracted from the nitrate medium with trioctanoyl ammonium nitrate