Separation of components of the solution modeling PUREX raffinate via extraction by crown ethers to 1,1,7-trihydrododecafluoroheptanol |
| |
Authors: | S. V. Demin E. V. Fatyushina V. I. Zhilov V. V. Yakshin O. M. Vilkova N. A. Tsarenko A. Yu. Tsivadze |
| |
Affiliation: | (1) Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii pr. 31, Moscow, 119991, Russia;(2) Frumkin Institute of Physical Chemistry, Russian Academy of Sciences, Leninskii pr. 31, Moscow, 119991, Russia |
| |
Abstract: | We study the extraction of strontium, cesium, and some other elements by dicyclohexano-18-crown-6 (DCH18C6) and its di-tert-butyl derivative (DTBDCH18C6) in the system 1,1,7-trihydrododecafluoroheptanol-water from the solution modeling PUREX raffinate. We show that strontium under these conditions is extracted in a single contact with distribution ratios of 100–200 and separates from sodium, whose distribution ratio is less than 0.01. Strontium extraction in a single contact reaches 99.5%. The stoichiometry and stability constants are determined for nitric acid complexes of the crown ethers studied with coextraction of nitric acid (1: 1). The mutual solubilities of the components in the system 1,1,7-trihydrododecafluoroheptanol-water are calculated using chromatography/mass spectrometry: water in alcohol is 0.5 wt %, and alcohol in water is 0.16 wt %. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|