水溶液中硼氧配阴离子的存在形式及影响因素  

The existing forms and influencing factors of the polyborate anions in aqueous solution

作　　者：张林进[1] 叶旭初[1] 

机构地区：[1]南京工业大学材料科学与工程学院,江苏南京210009

出　　处：《无机盐工业》2008年第2期4-8,共5页Inorganic Chemicals Industry

摘　　要：综述了硼酸盐水溶液中硼氧配阴离子的存在形式、振动光谱研究结果及影响其变化的因素。硼酸盐水溶液中,硼氧配阴离子除了常见的[B(OH)4]-,B(OH)3,[B3O3(OH)4]-,[B4O5(OH)4]2-,[B5O6(OH)4]-,[B6O7(OH)6]2-以外,还存在着[B2O(OH)6]2-,[B3O3(OH)5]2-等,各种硼氧配阴离子相互作用、相互影响。FT-IR和Ram an光谱研究结果进一步明确了硼氧配阴离子的存在形式及相互作用。同时指出了各种硼氧配阴离子的存在形式及相互作用与溶液总硼浓度、pH、金属阳离子、温度及水热条件等有关,且主要依赖于溶液总硼浓度和pH。高的总硼浓度和较低的pH有利于高聚合度的硼氧配阴离子的存在,反之则利于低聚合度的硼氧配阴离子的存在。This article reviewed the existing forms, results of spectroscopic study and influencing factors of polyborate anions in borate solutions. Besides the common [ B （ OH）4 ]^-, B （ OH）3, [ B3O3 （ OH）4 ]^-, [ B4O5 （ OH）4 ]^2- [ B5O6 （ OH） 4 ]^- and [ B6O7 （ OH ） 6 ]^2- there are also other existing forms of polyborate anion, such as [ B2O （ OH ） 6 ]^2 - and [ B3O3 （ OH ）5 ] ^2 - etc. and all these groups interact each other. The existing forms and interaction of polyborate anions were further illustrated by the study results of FT - IR and Raman spectrum. The existing forms and interaction of each group are relative to the concentration of total boron, pH, metallic cations, temperature and hydrothermal condition, and are mainly dependent on the concentration of total boron and pH. If the concentration of total boron is higher and the pH is lower, there are more high polymerized borate anions;if not, there are more low polymerized borate anions.

关 键 词：硼酸盐水溶液 振动光谱 硼氧配阴离子 

分 类 号：TQ128.5[化学工程—无机化工]