亚砜萃取剂萃取铀(Ⅵ)的热力学研究

Studies of thermodynamic on extraction of uranium(VI) with sulfoxides

研究了亚砜萃取剂石油亚砜－四氯化碳和２－乙基己基对甲苯基亚砜－甲苯从硝酸介质中萃取铀（Ⅵ）的机理，考察了硝酸浓度、萃取剂浓度、温度、盐析剂浓度、络合阴离子浓度对分配比的影响，求出了萃取反应的焓变。

The mechanism of extracting uranium(VI) with sulfoxides such as petroleum sulfoxide(PSO) and 2-ethylhexyltolyl sulfoxide (EHTSO) from nitric acid solution has been studied. The influences of the concentrations of nitric acid, extractant,salting-out agent and complex anion as well as temperature on the distribution ratio were observed. Enthalpy of the extraction reaction was obtained.