化学工程2012，Vol.40Issue(4)：27-30,4.
Na2B4O7-NaBr-Na2SO4-H2O四元体系348K相平衡研究
Study on phase equilibria in Na2 B4 O7 -NaBr-Na2 SO4 -H2O quaternary system at 348 K
摘要
Abstract
The solubilities and densities of solution in Na2B4O7-NaBr- Na2SO4-H2O quaternary system at 348 K were determined by isothermal equilibrium method. Based on the experimental data, the equilibrium phase diagram was plotted, which consists of one invariant E, three univariant curves (E1E, E2E and E3E) , and three crystallization fields corresponding to NaBr, Na2SO4 and Na2B4O7 ? 5H2O. The experimental results indicate that the quaternary system is of simple eutectic type and no double salt and solid solution, and sodium bromide has the salting-out effect on Na2B4O7 ? 5H2O and Na2SO4. The densities transformation rules were discussed.关键词
水盐体系/相平衡/硼酸盐Key words
salt-water system/ phase equilibrium/ borate分类
化学化工引用本文复制引用
宁慧逸,桑世华,王丹,曾晓晓..Na2B4O7-NaBr-Na2SO4-H2O四元体系348K相平衡研究[J].化学工程,2012,40(4):27-30,4.基金项目
国家自然科学基金资助项目(40973047) （40973047）
四川省杰出青年学科带头人培养资助计划资助项目(08ZQ026-017) （08ZQ026-017）
教育部新世纪优秀人才资助计划资助项目(NCET-07-0125) （NCET-07-0125）
