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1.本文报告四元体系H~+,Li~+,Mg~(2+)∥Cl~--H_2O的研究。此体系H~+,Li~+,Mg~(2+)∥Cl~--H_2O在0℃时的等温溶度图上有MgCl_2·6H_2O,HCl·MgCl_2·7H_2O,LiCl·MgCl_2·7H_2O,LiCl·2H_2O,LiCl·H_2O等五种盐的结晶区域以及一个HCl分压大于1大气压的区域。 2.在研究三元体系H~+,Mg~(2+)∥Cl~--H_2O时,进一步证实有可称为氢(或泋)光滷石的复盐HCl·MgCl_2·7H_2O生成,它于1大气压下在約44℃分解。在三元体系H~+,Li~+∥Cl~--H_2O中,当0℃时,它也作为固相之一而存在。 3.初步考察所研究的三元和四元体系中的盐析作用。确定在溶液粗成变化相当大的范围内,MgCl_2·6H_2O的溶度随氯化氢和氯化锂的浓度增加而比例下降(以重量克分子浓度表示溶液组成),同时在四元体系中氯化氢与氯化锂对溶液中氯化鎂的盐析作用呈加和性,即它们在四元体系中的总盐析作用等于它们分别在相应三元体系中对氯化镁的盐析效应之和。
1. This paper reports the research of quaternary system H ~ +, Li ~ +, Mg ~ (2+) ∥Cl ~ - H_2O. The isothermal solubility diagrams of H ~ +, Li ~ + and Mg ~ (2+) ∥Cl ~ - H2O at 0 ℃ have MgCl_2 · 6H_2O, HCl · MgCl_2 · 7H_2O, LiCl · MgCl_2 · 7H_2O, LiCl · 2H 2 O, LiCl · H 2 O and other five kinds of salt crystallization region and a partial pressure of HCl greater than 1 atm region. In the study of the ternary system H ~ +, Mg ~ (2+) ∥Cl ~ --H_2O, it is further confirmed that there is a double salt HCl · MgCl_2 · 7H_2O Decomposes at about 44 ° C at 1 atmosphere. In the ternary system H ~ +, Li ~ + ∥Cl ~ --H_2O, when 0 ℃, it also exists as one of the solid phase. 3. Preliminary study of the study of the ternary and quaternary system of salting-out effect. It was confirmed that the solubility of MgCl 2 · 6H 2 O decreased with the increase of the concentrations of hydrogen chloride and lithium chloride (the composition of the solution was expressed in terms of molecular weight), while the hydrogen chloride and chlorine The salting-out effect of lithium chloride on solution of magnesium chloride is additive, that is, their total salting-out effect in the quaternary system is equal to the sum of their salting-out effects on the magnesium chloride in the corresponding ternary system respectively.