盐效应对氯柱硼镁石的溶解及相转化动力学的影响  

The influence of salt effect on the kinetics of dissolution and transformation of chloropinnoite

作　　者：刘志宏[1] 

机构地区：[1]陕西师范大学化学系,陕西西安710062

出　　处：《陕西师范大学学报（自然科学版）》2000年第1期67-69,73,共4页Journal of Shaanxi Normal University：Natural Science Edition

基　　金：国家自然科学基金资助项目!(29170034)

摘　　要：从液固两相研究了氯柱硼镁石 ( 2MgO·2B2 O3·MgCl2 ·1 4H2 O)在 30℃NaCl水溶液中的溶解及相转化动力学过程 .结果表明 ,NaCl盐效应对该复盐的溶解有增溶作用 ,对其转化有抑制作用 ,对含硼物种的形式和硼酸盐的结晶化学没有显著的影响 .拟合了溶解动力学方程 ,计算了该复盐的标准溶解自由能ΔsG .The kinetics of dissolution and transformation process of 2MgO·2B 2O 3·MgCl 2·14H 2O in NaCl H 2O at 30℃ has been studied. The researching results show that the salt effect of NaCl can increase the dissolution rate of 2MgO·2B 2O 3·MgCl 2·14H 2O, but it can retard transformation. NaCl has no significant influence on the crystallization chemistry of borate. The kinetic equations of dissolution have been obtained. The Δ s G  has been calculated.

关 键 词：盐效应 氯柱硼镁石 溶解 相转化动力学 

分 类 号：O643.1[理学—物理化学]