硼酸盐水溶液中硼物种的存在形式及影响因素

The polyborate Present in aqueous solutions containing boron and the affection factors

中文关键词:  硼氧配阴离子  聚合度  过饱和  含硼盐湖卤水  综合统计形式

英文关键词:Polyborate anions  Degree of polymerization  Supersaturation  Salt lake brine containing boron  Comprehensive statistic form

中文摘要:

      根据以往相关的研究报道，综述了含硼水溶液中硼物种的存在形式，及其与总硼浓度、溶液pH值、溶液离子强度、温度、压力等因素的关系。随着总硼浓度的提高，硼氧配阴离子的聚合度加大，在pH值较高或较低时，聚硼离子的含量较少，主要以H3BO3和B（OH）4-的形式存在；同时，指出含硼水溶液存在普遍的过饱和现象，我国含硼盐湖卤水中的硼物种可以用B4O7^2-的综合统计形式表示。总结了硼酸盐水溶液中各种硼氧配阴离子的FT—IR，Raman和NMR的归属。

英文摘要:

      In this paper,the existence forms of boron in aqueous solutions containing boron and the relations of it with the factors such as concentration of total boron,pH,ionic strength,temperature,pressure and so on,were summarized based on the reported data.It is pointed out that the polymerization degree of boron increases with the elevation of concentration of total boron.The polyborates present in aqueous solutions containing boron are little when the pH is very high or low,with H3BO3 and B(OH)-4 as the main species.It is stressed that the supersaturation is universal for aqueous solutions containing boron,The FT-IR,Raman and NMR spectra of some polyborates have been given.The form of borate existing in the brine containing boron can be expressed as the comprehensive statistic one of tetraborate.