物理化学学报 >> 1995, Vol. 11 >> Issue (11): 1048-1052.doi: 10.3866/PKU.WHXB19951118

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Li2O﹒2B2O3-H2O过饱和溶液20℃结晶动力学研究

姚占力,高世扬,朱黎霞   

  1. 中国科学院盐湖研究所，西宁 810008
  • 收稿日期:1995-01-23 修回日期:1995-05-08 发布日期:1995-11-15
  • 通讯作者:

Chemistry of Borates in Salt Lake Brine XXIV.Study on Crystallization Kinetics of Li-Borates from Li2O﹒2B2O3-H2O Supersaturated Solution at 20℃

Yao Zhan-Li,Gao Shi-Yang,Zhu Li-Xia   

  1. Institute of Salt Lakes,Academia Sinica,Xining 810008
  • Received:1995-01-23 Revised:1995-05-08 Published:1995-11-15
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关键词: 锂, 硼酸盐, 结晶动力学

Abstract:

The supersaturated solution of Li2O•2B2O3-H2O containing 26.8% Li2O•2B2O3 were prepared and kept at 20℃ The crystallization processes of Li-borates from the solution has been studied with the kinetic method.
Two Li-borates, Li2B4O7•3H2O and LiBO2•8H2O crystallized out from Li2O•2B2O3-H2O solution. With the aid of simplex method and digital integration as well as RungeKutta digital solution of differential equation system, the experimental data were fitted and the crystailization kinetic equation of the first solid phase was obtained. The crystallization reaction processes of the two Li-borates were also discussed.

Key words: Lithium, Borate, Crystallization kinetics