Solubility Measurement of Li2O in LiCl Molten Salt for Electro-Reduction Process

Dae-Hyeon Kim; Sang-Eun Bae; Jong-Yun Kim; Tae-Hong Park; Yong Joon Park; Kyuseok Song

doi:10.14233/ajchem.2013.18

Issue

Vol. 25 No. 12 (2013): Vol 25 Issue 12

Issue Published : 17 June 2013

This work is licensed under a Creative Commons Attribution 4.0 International License.

Solubility Measurement of Li2O in LiCl Molten Salt for Electro-Reduction Process

https://doi.org/10.14233/ajchem.2013.18

Dae-Hyeon Kim

Nuclear Chemistry Research Division, Korea Atomic Energy Research Institute, 989-111 Daedeok-daero, Yuseong-gu, Daejeon 305-353, Republic of Korea

Sang-Eun Bae

Nuclear Chemistry Research Division, Korea Atomic Energy Research Institute, 989-111 Daedeok-daero, Yuseong-gu, Daejeon 305-353, Republic of Korea

Jong-Yun Kim

Nuclear Chemistry Research Division, Korea Atomic Energy Research Institute, 989-111 Daedeok-daero, Yuseong-gu, Daejeon 305-353, Republic of Korea

Tae-Hong Park

Nuclear Chemistry Research Division, Korea Atomic Energy Research Institute, 989-111 Daedeok-daero, Yuseong-gu, Daejeon 305-353, Republic of Korea

Yong Joon Park

Nuclear Chemistry Research Division, Korea Atomic Energy Research Institute, 989-111 Daedeok-daero, Yuseong-gu, Daejeon 305-353, Republic of Korea

Kyuseok Song

Nuclear Chemistry Research Division, Korea Atomic Energy Research Institute, 989-111 Daedeok-daero, Yuseong-gu, Daejeon 305-353, Republic of Korea

Corresponding Author(s) : Sang-Eun Bae

sebae@kaeri.re.kr; sks@kaeri.re.kr

Asian Journal of Chemistry, Vol. 25 No. 12 (2013): Vol 25 Issue 12
Article Published : 18 June 2013

Abstract

The change of Li₂O solubility with the concentration of high heat-generating elements such as Cs and Sr was measured in a LiCl melt, which is generally used as an electrolyte medium in an electrolytic reduction step of pyrochemical processing. The change in Li₂O solubility is one of the important parameters in the electrolytic reduction. High temperature filtration using a porous tube and acid-base titration were employed to measure the solubility of Li₂O. The solubility of Li₂O was found to be 8.8 wt. % in pure LiCl molten salt at 650 ºC. The solubility slightly increased when SrCl₂ (alkaline earth metal) was added to LiCl. In contrast, the addition of CsCl (alkali metal) significantly decreased the solubility.

Keywords

Pyroprocessing Electro-reduction Molten salt Lithium chloride Lithium oxide

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Kim, D.-H.; Bae, S.-E.; Kim, J.-Y.; Park, T.-H.; Joon Park, Y.; Song, K. Solubility Measurement of Li2O in LiCl Molten Salt for Electro-Reduction Process. ajc 2013, 25, 7055-7057.