Removal of SO42- from Li2CO3 by Recrystallization in Na2CO3 Solution

被引：18

作者：

Cai, Wei ^{[1
]}

Chen, Ruosong ^{[2
]}

Yang, Yurong ^{[1
]}

Yi, Meigui ^{[1
]}

Xiang, Lan ^{[2
]}

机构：

[1] Sichuan Univ, Coll Chem Engn, Chengdu 610065, Sichuan, Peoples R China

[2] Tsinghua Univ, Dept Chem Engn, Beijing 100084, Peoples R China

来源：

CRYSTALS | 2018年 / 8卷 / 01期

基金：

美国国家科学基金会;

关键词：

Lithium carbonate; sulfate; recrystallization; sodium carbonate; LITHIUM; EXTRACTION;

D O I：

10.3390/cryst8010019

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

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 degrees C to 90 degrees 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 degrees C for 10.0 h.

引用

页数：8

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