| 几种重要的热力学模型预测能力的比较研究 |
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| 引用本文： | 万艳鹏,尹霞,曾德文.几种重要的热力学模型预测能力的比较研究[J].广州化工,2007,35(2):10-13. |
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| 作者姓名： | 万艳鹏 尹霞 曾德文 |
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| 作者单位： | 湖南大学化学化工学院,长沙,410082 |
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| 摘 要： | 拟合了298.15K下Mn(NO3)2-H2O体系0~8.382mol·kg-1的各种热力学模型参数,其中包括原始Pitzer模型(三维里系数方程),扩展的Pitzer模型(五维里系数方程),Clegg-Pitzer模型以及BET模型。应用拟合的这些模型参数预测了该体系在各种温度和饱和浓度下水的饱和蒸气压,并把它们与实验值进行了比较。比较研究显示Clegg-Pitzer模型和BET模型均具有良好的预测能力,而各种版本的Pitzer模型则不尽如人意。
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| 关 键 词： | 热力学模型 溶解度 饱和蒸汽压 渗透系数 硝酸锰 |
The Comparative Study of Some Important Thermodynamic Models Predicting Ability |
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| WAN Yan-peng,YIN Xia,ZENG De-wen.The Comparative Study of Some Important Thermodynamic Models Predicting Ability[J].GuangZhou Chemical Industry and Technology,2007,35(2):10-13. |
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| Authors: | WAN Yan-peng YIN Xia ZENG De-wen |
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| Affiliation: | Department of Chemistry and Chemical Engineering, Hunan University, Changsha 420082, China |
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| Abstract: | Standard form of pitzer model, extended pitzer model, clegg-pitzer model and BET model parameters for the binary system Mn(NO3)2-H2O were obtained by fitting experimental osmotic coefficient at 298.15 K. The vapor press of saturated solution using fitting parameters with thermodynamic models was predicted. It showed that clegg-ptzer model and BET model were excellent prediction ability for phase change materials in the salt and water system, standard form of pitzer model and extended pitzer model were poor. |
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| Keywords: | thermodynamic model solubility vapor pressure parameters monogamous nitrate |
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