Isothermal solubility of Na2B4O7-Na2CO3-NaHCO3-NaBO2-H2O system at 25, 35 and 45 °C

被引：7

作者：

Li, J ^{[1
]}

Yang, Q ^{[1
]}

Zhang, FX ^{[1
]}

Li, HX ^{[1
]}

Wang, ZJ ^{[1
]}

机构：

[1] NW Univ Xian, Dept Chem, Key Lab Phosicoinorgan Chem Shaanxi Province, Xian 710069, Peoples R China

来源：

ACTA PHYSICO-CHIMICA SINICA | 2001年 / 17卷 / 11期

关键词：

solubility diagram; phase equilibrium; quaternary system; trona; borate; carbonate;

D O I：

10.3866/PKU.WHXB20011117

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Solubilities and refractive indices of saturated solutions of the system Na2B4O7-Na2CO3-NaHCO3-NaBO2-H2O have been investigated by isothermal method at 25, 35 and 45 degreesC. The complex trona (Na2CO3 . NaHCO3 . 2H(2)O) was found in the system, therefore, there are 5 monosaturated fields, 7 disaturated lines and 3 invariant points : E-3t(Na2B4O7 . 10H(2)O + NaBO2 . 4H(2)O + Na2CO3 . nH(2)O), E-2t(Na2B4O7 . 10H(2)O + Na2CO3 . NaHCO3 . 2H(2)O + Na2CO3 . nH(2)O), E-3t(Na2B4O7 . 10H(2)O + Na2CO3 . NaHCO3 . 2H(2)O + NaHCO3), at 25 degreesC, n = 10; 35 degreesC, n = 7; 45 degreesC, n = 1.

引用

页码：1045 / 1048

页数：4