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报道了N-正辛基己内酰胺(OCLA)-三甲苯从硝酸介质中萃取铀、钍的实验结果。OCLA对这两种元素的萃取规律类似于TBP,但分配系数(D)比TBP的高。用斜率法求得铀、钍的溶剂化数均为2,硝酸的溶剂化数为1。还对温度对萃取的影响,铀、钍的反萃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。
The experimental results of extraction of uranium and thorium from N-n-octylcaprolactam (OCLA) -toluene from nitric acid medium were reported. OCLA’s extraction of these two elements is similar to TBP but with a higher partition coefficient (D) than TBP. Uranium was calculated by the slope method, the solvation numbers of thorium were all 2, and the solvation number of nitric acid was 1. The influence of temperature on extraction, the back extraction of uranium and thorium and the formation of three phases were also studied. The equilibrium constants of extraction and △ H values of uranium and thorium were calculated.