摘要
近年来利用熔盐电解法制备Al-Li合金已开始受到重视。但由于LiCl具有强烈的吸水性给工艺及其电解质溶液物化性质的研究带来很大的困难。因此本文利用热分析手段研究了NH_4Cl氯化Li_2CO_3的反应,为今后在电解工艺及其基础研究中用NH_4Cl定量氯化Li_2CO_3取代直接使用LiCl提供依据。
The chlorination reaction of Li_2CO_3 with NH_4Cl has been studied in detail by a series of thermal analysis methods. When NH_4Cl/Li_2CO_3 mole ratio equals 4,Li_2CO_3 can be transformed into LiCl quantitatively in a stream of Ar gas flow. All residual NH_4Cl is decomposed completely at 400℃ and carried away from the reaction cell by Ar gas.Analysis by X-Ray diffraction and Ion Chromatography show that there are almost no NH_4Cl remained in The LiCl product. It is interested that the chlorination reaction can be applied to the determinations of phase diagram by thermal analysis method and the preparation of Al-Li alloy by electrolysis in molten salt.
出处
《物理化学学报》
SCIE
CAS
CSCD
北大核心
1991年第2期227-230,共4页
Acta Physico-Chimica Sinica
关键词
氯化铵
碳酸锂
氯化反应
热分析法
Ammonium chloride (NH_4Cl), Chlorination reaction, Lithum carbonate (Li_2CO_3), Thermal analysis methods
