| HNO_3-UO_2(NO_3)_2-H_2O体系活度系数的关联和预测 |
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| 引用本文： | 李春喜,李以圭.HNO_3-UO_2(NO_3)_2-H_2O体系活度系数的关联和预测[J].清华大学学报(自然科学版),1996(2). |
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| 作者姓名： | 李春喜 李以圭 |
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| 作者单位： | 清华大学化学工程系!北京100084 |
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| 摘 要： | 用Ｃｌｅｇｇ－Ｐｉｔｚｅｒ方程关联了ＨＮＯ３－Ｈ２Ｏ和ＵＯ２（ＮＯ３）２－Ｈ２Ｏ单一电解质水溶液离子 平均活度系数。在此基础上考察了有无混合参数对ＨＮＯ３－ＵＯ２（ＮＯ３）２－Ｈ２Ｏ非对称混合电解质 水溶液体系的关联和预测功能的影响，并与原Ｐｉｔｚｅｒ方程进行了比较。结果表明，Ｃｌｅｇｇ－Ｐｉｔｚｅｒ 方程在电解质浓度适用范围及预测精度方面均优于原Ｐｉｔｚｅｒ方程。
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| 关 键 词： | HNO3 UO2(NO3)2 电解质溶液 活度系数 Clegg-Pitzer方程 Pitzer方程 |
Correlation and prediction of activity coefficients for HNO_3-UO_2(NO_3)_2-H_2O system |
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| Li Chunxi,Li Yigui.Correlation and prediction of activity coefficients for HNO_3-UO_2(NO_3)_2-H_2O system[J].Journal of Tsinghua University(Science and Technology),1996(2). |
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| Authors: | Li Chunxi Li Yigui |
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| Abstract: | The Clegg-Pitier equation is used to correlate the average ionic activity coefficients in single electrolyte aqueous solutions of HNO3-H2O and UO2 (NO3)2-H2O at 25C. The correlation and prediction capabilities of these equations for mixed electrolyte aqueous solutions of HNO3-UO2 (NO3)2-H2O are tested with and without the adjustable mixed parameters, respectively. They are compared with the original Pitzer equation. The results show that the Clegg-Pitzer equation is superior to the Pitzer equtation. The former has the advantage of good precision in prediction in wider concentration ranges of electrolytes. |
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| Keywords: | HNO3 UO2 (NO3)2 electrolyte solution activity coefficient Clegg-Pitzer equation3 Pitzer equation |
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