摘要
研究了辛酰哌啶 (OP)的甲苯溶液从硝酸介质中萃取硝酸铀酰的热力学。认为在有机相中形成了两种萃合物 :(OP)UO2 (NO3 ) 2 和 (OP) 2 UO2 (NO3 ) 2 ,平衡常数分别为 :Kex1=0 .5 38和Kex2=4 .2 30 ;通过硝酸对辛酰哌啶萃取铀的影响间接求出了辛酰哌啶萃取硝酸的平衡常数Ka=0 .0 97。
The extraction thermodynamics of uranium(Ⅵ) from nitric acid solution by N-octanoylpiperidine in toluene was investigated. The results showed that two extracted species of UO 2(NO 3) 2(OP) and UO 2(NO 3) 2(OP) 2 were formed, and the equilibrium constants were K ex1=0.538 and K ex2=4.230 respectively. Through considering the sub-reaction of extraction, the equilibrium constant of extracting nitric acid with N-octanoylpiperidine were obtained to be K HNO 3=0.097.
出处
《核技术》
CAS
CSCD
北大核心
2002年第6期455-460,共6页
Nuclear Techniques
关键词
辛酰哌啶
萃取
铀酰
热力学
N-octanoylpiperidine, Uranium (Ⅵ), Extraction, Thermodynamics
