Lithium isotope effects in extraction of lithium chloride by benzo-15-crown-5 in the 1,1,7-trihydrododecafluoroheptanol–water system


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Abstract

The extraction characteristics of the 1,1,7-trihydrododecafluoroheptanol water system have been studied for lithium chloride as the salt to be extracted and benzo-15-crown-5 as the extracting agent, as well as blank extraction of lithium chloride in this system. Single-stage lithium isotope separation factors (a) have been measured at various lithium chloride concentrations in water, and the isotope effect has been multiplied by extraction chromatography. The value of a for the Li6–Li7 pair was 1.024. The light lithium isotope is concentrated in the organic phase.

About the authors

S. V. Demin

Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences

Email: zhilov@igic.ras.ru
Russian Federation, Leninskii pr. 31, Moscow, 119991

V. I. Zhilov

Frumkin Institute of Physical Chemistry and Electrochemistry

Author for correspondence.
Email: zhilov@igic.ras.ru
Russian Federation, Moscow

A. Yu. Tsivadze

Frumkin Institute of Physical Chemistry and Electrochemistry

Email: zhilov@igic.ras.ru
Russian Federation, Moscow

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