| 钾镁氯化物(硫酸盐)与脲、水体系的溶度研究 |
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| 引用本文： | 魏小兰,张逢星,郭志箴,史启祯.钾镁氯化物(硫酸盐)与脲、水体系的溶度研究[J].物理化学学报,1998,14(3):237-242. |
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| 作者姓名： | 魏小兰 张逢星 郭志箴 史启祯 |
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| 作者单位： | Department of Chemistry Nothwest University,Xi'an 710069 |
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| 基金项目： | 陕西省教委专项科研基金 |
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| 摘 要： | 报导了KCl-MgCl2-CO(NH2)2-H2O和K2SO4-MgSO4-CO（NH2）2-H2O两个四元体系在25℃时的溶度及其饱和溶液的折光率、密度，相应的溶度图和组成-折光率、组成-密度图．前一体系中形成3个三元化合物：MgCl2·4CO（NH2）2·2H2O、MgCl2·CO（NH2）2·4H2O和KCl·MgCl2·6H2O溶度盐份图由9支共饱线、4个四元无变点组成．四元体系的水量图、性质-组成图有类似的变化．后一体系中有2个异成份溶解化合物MgSO4·CO（NH2）2·2H2O和K2SO4·MgSO4·6H2O形成，溶度等温图由7支双饱溶度线、3个四元无变点组成．对两个体系相图的相似性和差异点进行了讨论．
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| 关 键 词： | 四元体系 相平衡 溶解度 氯化钾 氯化镁 硫酸钾 硫酸镁 脲 |
| 收稿时间： | 1997-06-10 |
| 修稿时间： | 1997-10-20 |
Study on the lsothermal Solubility of Quaternary Systems KCl(K_2SO_4)-MgCl_2 (MgSO_4 )-CO(NH_2)_2-H_2O |
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| Wei Xiaolan, Zhang Fengxing, Guo Zhizhen , Shi Qizhen.Study on the lsothermal Solubility of Quaternary Systems KCl(K_2SO_4)-MgCl_2 (MgSO_4 )-CO(NH_2)_2-H_2O[J].Acta Physico-Chimica Sinica,1998,14(3):237-242. |
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| Authors: | Wei Xiaolan Zhang Fengxing Guo Zhizhen Shi Qizhen |
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| Institution: | Department of Chemistry Nothwest University,Xi'an 710069 |
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| Abstract: | The solubilities refraction indices and densities of the saturated solutions of the titled quaternary systems at 25 ℃ have been investigated for the first time and thier solubility diagrams, property diagrams hare been constructed.
In the solubility diagrams, there are five crystallization regions corresponding to KCl,MgCl2-6H2O, CO(NH2)2, MgCl2.4CO(NH2)2-2HaO and MgCl2?CO(NH2)2?4H2O, respectively for KCl-MgCl2-CO(NH2)2-H2O system, four crystallization regions corresponding t0 K2SO4,MgSO4?7H2O, CO(NH2)2 and K2SO4.MgSO4?6H2O, respectively for system K2SO4-MgSO4-CO(NH2 )2-H2 O system. |
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| Keywords: | Quaternary system Phase equilibirium Solubility Potassium chloride Magnisium chloride Potassium sulfate Magnisium Sulfate Urea |
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