引用本文:
李君, 杨琴, 张逢星, 李恒欣, 王振军. Na2B4O7-Na2CO3-NaHCO3-NaBO2-H2O四元体系的等温溶度[J]. 物理化学学报,
2001, 17(11): 1045-1048.
doi:
10.3866/PKU.WHXB20011117
Citation: Li Jun, Yang Qin, Zhang Feng-Xing, Li Heng-Xin, Wang Zhen-Jun. Isothermal Solubility of Na2B4O7-Na2CO3-NaHCO3-NaBO2-H2O System at 25， 35 and 45 ℃[J]. Acta Physico-Chimica Sinica, 2001, 17(11): 1045-1048. doi: 10.3866/PKU.WHXB20011117
Citation: Li Jun, Yang Qin, Zhang Feng-Xing, Li Heng-Xin, Wang Zhen-Jun. Isothermal Solubility of Na2B4O7-Na2CO3-NaHCO3-NaBO2-H2O System at 25， 35 and 45 ℃[J]. Acta Physico-Chimica Sinica, 2001, 17(11): 1045-1048. doi: 10.3866/PKU.WHXB20011117
Na2B4O7-Na2CO3-NaHCO3-NaBO2-H2O四元体系的等温溶度
摘要:
测定了四元体系Na2B4O7Na2CO3NaHCO3NaBO2H2O在25 、 35及45 ℃时的等温溶度和饱和溶液的折光率,绘制了相应的溶度图和组成折光率图.体系在35和45 ℃时有异成分化合物－天然碱（Na2CO3•NaHCO3•2H2O）生成.这些结果有助于揭示含硼碱湖的固体盐矿成因，对有关盐卤存在的反应2Na2CO3＋Na2B4O7＋H2O=4NaBO2＋2NaHCO3，揭示了相化学规律.
English
Isothermal Solubility of Na2B4O7-Na2CO3-NaHCO3-NaBO2-H2O System at 25， 35 and 45 ℃
Abstract:
Solubilities and refractive indices of saturated solutions of the system Na2B4O7Na2CO3 NaHCO3NaBO2H2O have been investigated by isothermal method at 25, 35 and 45 ℃. The complex trona (Na2CO3•NaHCO3•2H2O) was found in the system, therefore,there are 5 monosaturated fields,7 disaturated lines and 3 invariant points ：E1t（Na2B4O7•10H2O＋NaBO2•4H2O＋Na2CO3•nH2O）， E2t（Na2B4O7•10H2O＋ Na2CO3•NaHCO3•2H2O＋Na2CO3•nH2O）， E3t（Na2B4O7•10H2O＋Na2CO3•NaHCO3•2H2O＋NaHCO3）， at 25 ℃， n=10； 35 ℃， n=7； 45 ℃， n=1.
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