Removal of SO42− from Li2CO3 by Recrystallization in Na2CO3 Solution

Wei Cai; Ruosong Chen; Yurong Yang; Meigui Yi; Lan Xiang

doi:10.3390/cryst8010019

Crystals (Jan 2018)

Removal of SO42− from Li2CO3 by Recrystallization in Na2CO3 Solution

Wei Cai,
Ruosong Chen,
Yurong Yang,
Meigui Yi,
Lan Xiang

Affiliations

Wei Cai: College of Chemical Engineering, Sichuan University, Chengdu 610065, China
Ruosong Chen: Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
Yurong Yang: College of Chemical Engineering, Sichuan University, Chengdu 610065, China
Meigui Yi: College of Chemical Engineering, Sichuan University, Chengdu 610065, China
Lan Xiang: Department of Chemical Engineering, Tsinghua University, Beijing 100084, China

DOI: https://doi.org/10.3390/cryst8010019
Journal volume & issue: Vol. 8, no. 1
p. 19

Abstract

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Li2CO3 with high purity is an important raw material for the fabrication of lithium rechargeable batteries. This paper reports a facile recrystallization way to produce Li2CO3 with high purity from commercial Li2CO3 containing 0.8 wt % of SO42− by the treatment of the commercial Li2CO3 in Na2CO3 solution. The increase of temperature from 30 °C to 90 °C favored the recrystallization of Li2CO3 in Na2CO3 solution and promoted the removal of SO42− adsorbed or doped on/in the commercial Li2CO3. The content of SO42− in Li2CO3 decreased to 0.08 wt % after the treatment of the commercial Li2CO3 in 1.0 mol·L−1 Na2CO3 solution at 90 °C for 10.0 h.

Published in Crystals

ISSN: 2073-4352 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Science: Chemistry: Crystallography
Website: http://www.mdpi.com/journal/crystals/

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