(Solid plus Liquid) Equilibria in the Quaternary System Na2B4O7-MgB4O7-K2B4O7-H2O at 288 K

被引：0
|
作者：
Sang Shihua [1 ]
Peng Jiang [1 ]
机构：
[1] Chengdu Univ Technol, Coll Mat & Chem & Chem Engn, Chengdu 610059, Sichuan, Peoples R China
来源：
CHINESE JOURNAL OF CHEMISTRY | 2010年 / 28卷 / 05期
基金：
中国国家自然科学基金;
关键词：
phase equilibrium; borate; solubility;
D O I：
暂无
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
(Solid+Liquid) phase equilibria in the quaternary system Na2B4O7-MgB4O7-K2B4O7-H2O at 288 K were studied experimentally using the method of isothermal solution saturation. Solubility of any single salt in the solution of the quaternary system was determined experimentally. Based on the experimental data achieved, the phase diagram and water content diagram of the quaternary system were constructed, respectively. In the phase equilibrium diagram of the quaternary system Na2B4O7-MgB4O7-K2B4O7-H2O at 288 K, there are one invariant point E, three univariant curves E1E, E2E and E3E, and three fields of crystallization corresponding to Na2B4O7 center dot 10H(2)O, K2B4O7 center dot 4H(2)O and MgB4O7 center dot 9H(2)O. The experimental results show that potassium borate (K2B4O7 center dot 4H(2)O) have higher solubilities than the magnesium borate and sodium borate in the quaternary system Na2B4O7-MgB4O7-K2B4O7-H2O at 288 K.
引用
收藏
页码：755 / 758
页数：4
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