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Study of isotope effect upon lithium iodide complexation with benzo-15-crown-5 in water–chloroform extraction system


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Abstract

Extraction characteristics of chloroform–water system in lithium iodide extraction with benzo-15-crown-5 (B15C5) were studied. The complexation of the crown ether with LiI in organic phase was shown by IR spectroscopy. Isotope effect multiplication was performed by extraction chromatography technique. The magnitude of isotope separation factor (α) for 6Li-7Li pair was 1.017. The light lithium isotope is concentrated in organic phase.

About the authors

N. A. Shokurova

Frumkin Institute of Physical Chemistry and Electrochemistry

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

L. I. Demina

Frumkin Institute of Physical Chemistry and Electrochemistry; Kurnakov Institute of General and Inorganic Chemistry

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

V. I. Zhilov

Frumkin Institute of Physical Chemistry and Electrochemistry; Kurnakov Institute of General and Inorganic Chemistry

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

S. V. Demin

Frumkin Institute of Physical Chemistry and Electrochemistry; Kurnakov Institute of General and Inorganic Chemistry

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

A. Yu. Tsivadze

Frumkin Institute of Physical Chemistry and Electrochemistry

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

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