MgO－B_2O_3－MgCl_2－H_2O体系与盐酸滴定反应的研究  

TITRATION REACTION OF MgO-B_2O_3-MgCl_2-H_2O BRINE WITH HYDROCHLORIC ACID

作　　者：李积才[1] 高世扬[1] 翟宗玺[1] 

机构地区：[1]中国科学院青海盐湖研究所

出　　处：《无机化学学报》1995年第1期57-62,共6页Chinese Journal of Inorganic Chemistry

摘　　要：ＭｇＯ－Ｂ２Ｏ３－ＨｇＣｌ２－Ｈ２Ｏ是含硼盐湖日晒浓缩盐卤的典型体系，它与盐酸反应生成硼酸，是从天然浓缩盐卤中制取硼酸的工艺基础，以量热滴定法和ｐＨ滴定法研究该反应，结果表明，析出硼酸的反应分两步进行；合成盐卤中硼酸盐可以用ＭｇＢ２ｎＯ（３ｎ＋１）（ｎ＝１，２，３）综合统计形式来表示；天然浓缩盐卤中硼酸盐可以用四硼酸镁的统计形式进行表示．Titration reaction of synthetic brine MgO-B2O3-MgCl2-H2O systems and natural concentrated brine contained boron with hydrochloric acid have been studied by calorimetric titration and pH titration. The curves of titration clearly revealed that two steps are involved in reaction of brine with HCl. Based on the result, it may be considered that the borate in concentrated brine express in a comprehensive statistical form of MgB2nO(3n+1), for natural concentrated brine n = 2.

关 键 词：硼盐卤 量热滴定 PH滴定 盐酸滴定 反应机理 

分 类 号：O613.81[理学—无机化学] O643.12[理学—化学]