| 四元体系LiNO3-Mg(NO3)2-NH4NO3-H2O相图预测及相关相变储能材料的研究 |
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| 引用本文： | 尹 霞,陈启元,王文磊,曾德文.四元体系LiNO3-Mg(NO3)2-NH4NO3-H2O相图预测及相关相变储能材料的研究[J].无机化学学报,2012,28(9):1873-1877. |
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| 作者姓名： | 尹 霞 陈启元 王文磊 曾德文 |
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| 作者单位： | 1. 中南大学化学化工学院,长沙,410083
2. 中南大学化学化工学院,长沙410083;中国科学院青海盐湖研究所,西宁810008 |
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| 基金项目： | 湖南省自然科学基金(No.11JJ2011);中南大学中央高校基本科研业务费;科技部“863”计划(No.2012AA052503);中科院知识创新重要研究课题(No.KJCX2-YW-H2O)资助项目 |
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| 摘 要： | 应用修正的BET热力学模型对Mg(NO3)2-NH4NO3-H2O三元体系和LiNO3-Mg(NO3)2-NH4NO3-H2O四元体系在273～320 K的相图进行预测,并找到一个相变温度较低的四元共晶点Mg(NO3)2.6H2O-LiNO3.3H2O-NH4NO3,其质量百分数组成为:25.5%的硝酸铵,28.4%的硝酸锂,13.8%的硝酸镁和32.3%的水,通过实验对共晶点组成材料的吸放热行为进行测定,发现其熔化温度为286.3 K,且DSC测试其相变热焓为192.7 J.g-1,表明该材料可用作潜在的低温相变储能材料。
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| 关 键 词： | BET模型 溶解度 相图 LiNO3-Mg(NO3)2-NH4NO3-H2O 相变储能材料 |
Phase Diagram Prediction of the Quaternary System LiNO3-Mg(NO3)2-NH4NO3-H2O and Research of Related Phase Change Materials |
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| YIN Xi,CHEN Qi-Yuan,WANG Wen-Lei and ZENG De-Wen.Phase Diagram Prediction of the Quaternary System LiNO3-Mg(NO3)2-NH4NO3-H2O and Research of Related Phase Change Materials[J].Chinese Journal of Inorganic Chemistry,2012,28(9):1873-1877. |
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| Authors: | YIN Xi CHEN Qi-Yuan WANG Wen-Lei and ZENG De-Wen |
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| Institution: | College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China,College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China,College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China and College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China; Qinghai Institute of Salt Lakes,Chinese Academy of Sciences, Xining 810008, China |
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| Abstract: | The modified BET thermodynamic model was applied to predict phase diagram of the systems Mg(NO3)2-NH4NO3-H2O and LiNO3-Mg(NO3)2-NH4NO3-H2O from 273 K to 320 K,in which one quaternary eutectic point(its composition:25.5% NH4NO3,28.4% LiNO3,13.8% Mg(NO3)2 and 32.3% H2O.) with low melting temperature was found.The exothermal and endothermal behavior and DSC measurement of the predicted eutectic point were measured and the results showed that the melting temperature is 286.3 K and melting heat is 192.7 J.g-1,and the predicted material is expected to be used for the potential low temperature phase change material. |
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| Keywords: | BET model solubility phase diagram LiNO3-Mg(NO3)2-NH4NO3-H2O phase change material |
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