摘要
用盐酸 pH滴定浓缩盐卤中硼酸盐的结果表明 ,盐卤中的硼是以“四硼酸盐”的综合统计形式存在 .在盐卤加水稀释实验中观察到硼酸镁过饱和溶解度现象 .在盐卤硼酸盐化学研究中 ,测定并得到硼酸镁在浓缩盐卤中的过饱和极限溶解度比平衡溶解度高 7倍 .采用差示FT IR光谱技术 ,记录四硼酸镁过饱和水溶液及其稀释过程和酸化过程的FT IR光谱结果显示 ,含硼水溶液中存在在不同的多聚硼氧配阴离子 。
The result of hydrochloric acid pH titration for the boron containing concentrated brine demonstrated that the form of borate in the brine is existed as “comprehensive tetraborate”. In diluted experiment of high boron concentrated brine, the supersaturated solubility phenomena of Mg borate has been observed and during studying of borate chemistry in salt lake brine, the maximum supersaturated solubility of MgB 4O 7 in brine has been determined to be 7.5% MgB 4O 7 which is 7 fold higher than that in it′s equilibrium state. By means of differential FT IR spectra technique, FT IR of the supersaturated solution of MgB 4O 7 and its dilutions and it′s acidified solution has been recorded and showed that there exists various polyborate ions and interaction among them in solution.
出处
《陕西师大学报（自然科学版）》
CSCD
北大核心
2000年第3期70-78,共9页
Journal of Shaanxi Normal University(Natural Science Edition)
基金
国家自然科学基金资助项目!(2 99710 32 )
