Correlation and prediction of activity and osmotic coefficients of   aqueous electrolytes at 298.15 K by the modified TCPC model

doi:10.1021/je060451k

CORC > 北京大学 > 工学院

	Correlation and prediction of activity and osmotic coefficients of aqueous electrolytes at 298.15 K by the modified TCPC model
	Ge, Xinlei ; Wang, Xidong ; Zhang, Mei ; Seetharaman, Seshadri
刊名	journal of chemical and engineering data
	2007
关键词	VAPOR-LIQUID-EQUILIBRIA BI-UNIVALENT COMPOUNDS 3-CHARACTERISTIC-PARAMETER CORRELATION MODEL ION INTERACTION PARAMETERS RARE-EARTH PERCHLORATES LOCAL COMPOSITION MODEL EXCESS GIBBS ENERGY ISOPIESTIC DETERMINATION THERMODYNAMIC PROPERTIES EVALUATED ACTIVITY
DOI	10.1021/je060451k
英文摘要	The modification and extension of a three-characteristic-parameter correlation model for calculating the thermodynamic properties including osmotic and mean activity coefficients of aqueous electrolytes at 298.15 K have been presented in this paper. The model can be reduced with two parameters: b, the approaching parameter, and S, the solvation parameter. Although the model adequately describes the thermodynamics with these two parameters, the third parameter, n, which is related to the distance between an ion and a solvent molecule, also can be regarded as an adjustable parameter. The two sets of parameters for 283 single salts in aqueous solutions up to saturation have been obtained from the regression of experimental values. Mean activity or osmotic coefficients of RbNO2, MgCl2, Sm(ClO4)(3), and ZnSO4, with these two sets of parameters, have been compared with the smoothed experimental data, which show good agreement. When the model with three parameters is employed, it gives a more accurate result, especially in case of high concentration. The comparison with Pitzer and the original TCPC model also illustrates the excellent performance of this modified model.; Chemistry, Multidisciplinary; Engineering, Chemical; SCI(E); EI; 0; ARTICLE; 2; 538-547; 52
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/252219]
专题	工学院
推荐引用方式 GB/T 7714	Ge, Xinlei,Wang, Xidong,Zhang, Mei,et al. Correlation and prediction of activity and osmotic coefficients of aqueous electrolytes at 298.15 K by the modified TCPC model[J]. journal of chemical and engineering data,2007.
APA	Ge, Xinlei,Wang, Xidong,Zhang, Mei,&Seetharaman, Seshadri.(2007).Correlation and prediction of activity and osmotic coefficients of aqueous electrolytes at 298.15 K by the modified TCPC model.journal of chemical and engineering data.
MLA	Ge, Xinlei,et al."Correlation and prediction of activity and osmotic coefficients of aqueous electrolytes at 298.15 K by the modified TCPC model".journal of chemical and engineering data (2007).