物理化学学报 >> 1991, Vol. 7 >> Issue (02): 227-230.doi: 10.3866/PKU.WHXB19910220

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用NH4Cl氯化Li2CO3的研究

张英珊; 赵敏寿; 唐定骧   

  1. 长春应用化学研究所，长春 130022
  • 收稿日期:1989-11-03 修回日期:1990-06-25 发布日期:1991-04-15
  • 通讯作者:

Study of the Chlorination Reaction of Li2CO3 with NH4Cl

Zhang Ying-Shan; Zhao Min-Shou; Tang Ding-Xiang   

  1. Changchun Institute of Applied Chemistry, Academia Sinica, Changchun 130022
  • Received:1989-11-03 Revised:1990-06-25 Published:1991-04-15
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关键词: 氯化铵, 碳酸锂, 氯化反应, 热分析法

Abstract: 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.

Key words: Ammonium chloride (NH4Cl), Chlorination reaction, Lithum carbonate (Li2CO3), Thermal analysis methods