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热力学模型对KCl-K_2SO_4-H_2O体系溶解度的预测 被引量：1

Solubility Prediction of System KCl-K_2SO_4-H_2O Using Thermodynamic Model
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摘要 用Pitzer-Si monson-Clegg热力学模型(PSC模型)和Pitzer模型,结合KCl-H2O,K2SO-4H2O以及KCl-K2SO-4H2O体系水活度和溶解度实验数据,分别计算KCl-H2O体系和K2SO-4H2O体系的溶解度相图,及KCl-K2SO-4H2O体系在273.15 K,298.15 K,323.15 K和348.15 K的溶解度.结果表明对于溶解度较低的KCl-K2SO4-H2O体系,Pitzer模型仅用二元参数得到的计算值与实验值一致,而PSC模型需考虑三元离子相互作用参数. The solubility of the KCl-K2SO4-H2O system was simulated at a wide range of temperatures by using PSC model and Pitzer model.The experiment water activity and experiment solubility in the binary KCl-H2O,K2SO4-H2O and ternary KCl-K2SO4-H2O systems were used to obtain the model parameters.For the KCl-K2SO4-H2O system of low solubility,the Pitzer model values are in agreement with the experiment data just by using binary coefficients,and the PSC model should take into account the ternary coefficients.
作者 尹霞 汪琼 吴玉双
机构地区 湖南大学化学化工学院
出处 《湖南大学学报（自然科学版）》 EI CAS CSCD 北大核心 2011年第2期65-69,共5页 Journal of Hunan University:Natural Sciences
基金 湖南大学'中央高校基本科研业务费'资助
关键词 热力学模型 溶解度 KCl-K2SO4-H2O体系 水活度 thermodynamic model solubility KCl-K2SO4-H2O system water activity
分类号 O642 [理学—物理化学]
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参考文献11

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共引文献4

同被引文献14

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湖南大学学报（自然科学版）
2011年 第2期

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