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首页> 外文期刊>Solvent Extraction and Ion Exchange >Effect of diluents on the extraction of Sr~(2+) from HNO_3 solutions with dicyclohexano-18-crown-6
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Effect of diluents on the extraction of Sr~(2+) from HNO_3 solutions with dicyclohexano-18-crown-6

机译：稀释剂对双环己基-18-crown-6从HNO_3溶液中萃取Sr〜（2+）的影响

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摘要

Extraction of Sr~(2+) has been carrid out with dicyclohexano-18-crown-6 (DC18C6) in benzene from varying HNO_3 concentrations,and the nature of species extracted has been established.The equilibrium constant values for the formation of Sr(NO_3)_2·DC18C6 have been evaluated,taking into account the aqueous complexing of Sr~(2+) with NO_3~- and with aqueous-soluble DC18C6,and also the uptake of HNO_3 by DC18C6 in the organic phase.Effect of diluents apart from benzene,such as chlorobenzene,dichloroethane,chloroform,1-octanol,carbon-tetrachloride,and nitrobenzene,and various mixtures of benzene and nitrobenzene on the extraction of Sr~(2+) with DC18C6 has also been studied.On the practical side,the extraction of Sr~(2+) has been examined with DC18C6 in solvent mixtures of tri-n-butyl phosphate (TBP),dodecane,and 1-octanol.This solvent mixture,at least partially,avoids the disadvantages envisaged while using 1-octanol alone for the separation and recovery of Sr~(2+) from minor actinide depleted TRUEX process raffinate.
机译：用不同浓度的HNO_3用苯中的二环己酮-18-冠-6（DC18C6）进行了Sr〜（2+）的萃取，并确定了所萃取物质的性质。考虑到Sr〜（2+）与NO_3〜-和水溶性DC18C6的水络合，以及DC18C6在有机相中对HNO_3的吸收，对NO_3）_2·DC18C6进行了评估。还研究了用苯（如氯苯，二氯乙烷，氯仿，1-辛醇，四氯化碳和硝基苯）以及苯和硝基苯的各种混合物在DC18C6上萃取Sr〜（2+）的方法。 ，已用DC18C6在磷酸三正丁酯（TBP），十二烷和1-辛醇的溶剂混合物中对Sr〜（2+）的萃取进行了研究。该溶剂混合物至少部分避免了使用时的缺点单独使用1-辛醇从次act系元素分离和回收Sr〜（2+） eted TRUEX过程提炼。

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