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研究了N-(2-乙基)己基己内酰胺(EHCLA)-三甲苯从硝酸介质中萃取铀、钍。EHCLA对这两种元素的萃取规律类似于TBP。用斜率法求得铀、钍的溶剂化数均为2,硝酸为1。还就温度对于萃取的影响和铀、钍的反萃以及三相的形成进行了研究,计算了萃取平衡常数和铀、钍的△H值。初步探讨了萃取的机理。
The extraction of uranium and thorium from nitric acid medium by N- (2-ethylhexyl) caprolactam (EHCLA) -trimethylbenzene was studied. EHCLA’s extraction of these two elements is similar to TBP. Calculate uranium with the slope method, the solventization number of thorium is 2, nitric acid is 1. The effect of temperature on extraction and the extraction of uranium and thorium and the formation of three phases were also studied. The equilibrium constants of extraction and ΔH values of uranium and thorium were calculated. Preliminary study of the extraction mechanism.