2MgO·2B_2O_3·MgCl_2·14H_2O在H_3BO_3水溶液中相转化平衡溶液的拉曼光谱分析  

Raman spectroscopic analysis of phase transform-balance saturated aqueous solution of 2MgO·2B_2O_3·MgCl_2·14H_2O in H_3BO_3 aqueou solutions

作　　者：杨荣榛[1] 李莉[2] 刘志宏[1] 高波[1] 胡满成[1] 夏树屏[1] 

机构地区：[1]陕西师范大学化学与材料科学学院,陕西西安710062 [2]西安化工研究所,陕西西安710002

出　　处：《陕西师范大学学报（自然科学版）》2005年第4期72-74,共3页Journal of Shaanxi Normal University：Natural Science Edition

基　　金：国家自然科学基金资助项目(20271051)

摘　　要：采用拉曼光谱技术,从溶液结构方面研究了2MgO.2B2O3.MgCl2.14H2O在30℃下5种不同浓度硼酸水溶液中溶解及相转化平衡饱和水溶液中硼氧配阴离子的存在形式,给出了溶液中硼氧配阴离子的拉曼光谱峰归属.结果表明,饱和水溶液中硼氧配阴离子的存在形式分别为H3BO3、B(OH)4-、B3O3(OH)4-、B4O5(OH)42-和B6O7(OH)62-.该研究为2MgO.2B2O3.MgCl2.14H2O在不同浓度硼酸溶液中相转化机理提供了依据.The Raman spectroscopy is used to identify the polyborate ions in saturated aqueous solutions of phase transformation of 2MgO·2B2O3·MgCl2·14H2O in 5 species different H3BO3 solutions at 30℃. The assignments of the Raman peaks of the borate aqueous solution are given. The existing forms of polyborate anions in saturated aqueous mlution are H3BO3, B（OH）4^-, B3O3 （OH）4^- , B4O5（OH）4^2- and B6O7（OH）6^2- respectively, for 2MgO·2B2O3·MgCl2·14H2O with phase transform tion in mechanism different chroma H3BO3 solutions. The relationships between the existing forms of polyborate anions in solutions and the transformation products have been gained.

关 键 词：拉曼光谱 硼酸盐 饱和硼酸盐溶液 

分 类 号：O561.3[理学—原子与分子物理]