Apparent Molar Volumes of Aqueous Solutions of Magnesium Tetraborate from 283.15 to 363.15 K and 0.1 MPa

被引：8

作者：

Zhao, Kaiyu ^{[1
]}

Li, Long ^{[1
]}

Li, Jing ^{[1
]}

Guo, Yafei ^{[1
,2
]}

Liu, Yuanhui ^{[1
]}

Deng, Tianlong ^{[1
]}

机构：

[1] Tianjin Univ Sci & Technol, Coll Chem Engn & Mat Sci, Tianjin Key Lab Marine Resources & Chem, Tianjin 300457, Peoples R China

[2] Northwest Univ, Coll Chem & Mat Sci, Xian 710127, Shaanxi, Peoples R China

来源：

JOURNAL OF SOLUTION CHEMISTRY | 2018年 / 47卷 / 05期

基金：

中国国家自然科学基金;

关键词：

Density; Apparent molar volume; Magnesium tetraborate; VTF model; Pitzer model; THERMODYNAMIC PROPERTIES;

D O I：

10.1007/s10953-018-0761-9

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Densities for aqueous solutions of magnesium tetraborate MgB4O7(aq) at the molalities of (0.00556-0.03341) mol center dot kg(-1) were measured with an Anton Paar Digital vibrating-tube densimeter at temperature intervals of 5 K from 283.15 to 363.15 K and 0.1 MPa. Apparent molar volumes were obtained based on the experimental density data, and the 3D diagrams of the apparent molar volume (V (I center dot) ) of MgB4O7(aq) against temperature (T) and molality (m) were plotted. On the basis of the Vogel-Tamman-Fulcher equation, the coefficients of the correlation equation for densities of MgB4O7(aq) against temperature and molality were parameterized. According to the Pitzer ion-interaction model of the apparent molar volume, the temperature correlation equations of Pitzer single-salt parameters F(i,p,T) = a (0) + a (1) x T + a (2) x T (2) + a (3)/T + a (4) x ln(T) + a (5) x T (3) (where T is temperature in Kelvin, a (i) are model parameters) for MgB4O7 were obtained for the first time.

引用

页码：827 / 837

页数：11

共 16 条

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