| Na+、K+//SO42--H2O三元体系273 K介稳相平衡研究 |
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| 引用本文： | 林晓峰,曾英,郑志远.Na+、K+//SO42--H2O三元体系273 K介稳相平衡研究[J].盐湖研究,2007,15(3):24-27. |
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| 作者姓名： | 林晓峰 曾英 郑志远 |
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| 作者单位： | 成都理工大学材料与化学化工学院化工系,四川,成都,610059 |
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| 摘 要： | 采用等温蒸发法研究了三元体系Na+、K+//SO42--H2O 273 K时介稳相平衡,测定了该体系的溶解度和液相密度。根据溶解度数据绘制了相图。该体系的介稳相图由2条单变量曲线、2个结晶相区和1个共饱点组成。2个结晶区分别对应于盐K2SO4和Na2SO4.10H2O的结晶区;共饱点液相组成为w(K2SO4)7.56%、w(Na2SO4)5.14%。该体系属简单共饱型,无复盐及固溶体形成。
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| 关 键 词： | 三元体系 Na+、K+//SO42--H2O 273K 介稳相平衡 |
| 文章编号： | 1008-858X（2007）03-0024-04 |
| 修稿时间： | 2006-10-27 |
Study on Metastable Phase Equilibrium of Na+, K+//SO42--H2O Ternary System at 273 K |
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| LIN Xiao-feng,ZENG Ying,ZHENG Zhi-yuan.Study on Metastable Phase Equilibrium of Na+, K+//SO42--H2O Ternary System at 273 K[J].Journal of Salt Lake Research,2007,15(3):24-27. |
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| Authors: | LIN Xiao-feng ZENG Ying ZHENG Zhi-yuan |
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| Abstract: | The metastable phase equilibrium of Na+,K+//SO42——H2O ternary system was studied by isothermal evaporation method at 273 K,and the solubilities and densities of this system were measured.Phase diagram was plotted according to the solubility data.There exist two univariant curves,two crystallization fields and one co-saturation point in the isothermal metastable diagram.The two crystallization fields are corresponding to K2SO4 and Na2SO4·10H2O respectively,and the composition of the co-saturation point is w(K2SO4)7.56% and w(Na2SO4)5.14%.This ternary system was simple evtonic type,without double-salt or solid solution formed. |
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| Keywords: | 273K |
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