| Li2O﹒2B2O3-H2O过饱和溶液20℃结晶动力学研究 |
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| 引用本文： | 姚占力,高世扬,朱黎霞. Li2O﹒2B2O3-H2O过饱和溶液20℃结晶动力学研究[J]. 物理化学学报, 1995, 11(11): 1048-1052. DOI: 10.3866/PKU.WHXB19951118 |
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| 作者姓名： | 姚占力 高世扬 朱黎霞 |
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| 作者单位： | Institute of Salt Lakes,Academia Sinica,Xining 810008 |
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| 基金项目： | 中科院基础研究“八五”重点资助，国家自然科学基金 |
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| 摘 要： | 盐水溶液中存在过饱和现象，硼酸盐溶液的过饱和即是一例．其中，镁础酸盐体系过饱和溶液在不同浓度和温度条件下的液固相关系曾有多次报道［‘－’］；给出过许多有益的结果，也探讨了镁硼酸盐的结晶反应机理并拟合出相应的结晶动力学方程．这些工作对认识盐水溶液过饱和现象有重要意义．为了更广泛地认识和了解不同棚酸盐水溶液中的过饱和现象，本文采用动力学方法，首先对Li20·2B203－HZO过饱和溶液结晶过程进行了研究．1实验初始反应溶液中Li。O／BZO。（摩尔比）为1／2，按此配比计算并称取需要量的Li0H·H。O（A．R．）、H。…
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| 关 键 词： | 锂 硼酸盐 结晶动力学 |
| 收稿时间： | 1995-01-23 |
| 修稿时间： | 1995-05-08 |
Chemistry of Borates in Salt Lake Brine XXIV.Study on Crystallization Kinetics of Li-Borates from Li2O﹒2B2O3-H2O Supersaturated Solution at 20℃ |
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| Yao Zhanli, Gao Shiyang, Zhu Lixia. Chemistry of Borates in Salt Lake Brine XXIV.Study on Crystallization Kinetics of Li-Borates from Li2O﹒2B2O3-H2O Supersaturated Solution at 20℃[J]. Acta Physico-Chimica Sinica, 1995, 11(11): 1048-1052. DOI: 10.3866/PKU.WHXB19951118 |
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| Authors: | Yao Zhanli Gao Shiyang Zhu Lixia |
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| Affiliation: | Institute of Salt Lakes,Academia Sinica,Xining 810008 |
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| 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. |
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| Keywords: | Lithium Borate Crystallization kinetics |
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