【摘要】 采用差示FTIR光谱技术,研究了氯柱硼镁石在30℃下浓度为0.5,12和18％MgCl₂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FTIR光谱。给出了溶液中硼氧配阴离子的FTIR光谱振动频率的归属,515cm^-1为单和二硼氧配阴离子特征峰,630cm^-1为三硼氧配阴离子特征峰,550cm^-1为四硼氧配阴离子特征峰。对饱和水溶液中硼氧配阴离子的存在形式及其相互作用以及与相转化析出固相的关系进行了讨论。更多还原

【Abstract】 FTIR differential spectroscopy was used to identify the polyborate ions in saturated aqueous solutions during dissolution and transformation of 2MgO·2B2O3,·MgCl2·14H2O in 0.5% , 12% , and 18% MgCl2 solutions at 30℃ , respectively. The recorded IR-spectroscopic frequencies of the borate aqueous solution subtracted that of water as a blank value and their assignments were given. The bands at about 515, 630 and 550 cm-1 are characteristics of B(OH)4- /B2O(OH)62- , B3O3 (OH)4- /B3O3 (OH)25- , and B,O5 (OH)42- , respectively. The existing forms of polyborate anions in saturated aqueous solutions and their interaction have been discussed. The relations between the existing forms of polyborate anions and the crystallizing solid phases have been obtained.更多还原