323.15 K 时混合硼酸盐体系 NaB(OH)4-Na2B4O5(OH)4-H2O 中水活度和固液平衡的同位素测定

IF 2 3区工程技术 Q3 CHEMISTRY, MULTIDISCIPLINARY

Journal of Chemical & Engineering Data Pub Date : 2024-09-10 DOI:10.1021/acs.jced.4c00271

Yi Hua, Jinqiu Ma, Shuaiqi Sun, Qingfen Meng, Dan Li, Yong Ma, Lingzong Meng, Guangli Zhou

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引用次数: 0

摘要

采用等压法研究了 323.15 K 下 NaB(OH)4-Na2B4O5(OH)4-H2O 三元体系的水活度和渗透系数。用等温溶解平衡法研究了 323.15 K 下 NaBO2-Na2B4O7-H2O 体系的溶解度和理化性质。该体系的相图由 NaBO2-4H2O 和 Na2B4O7-10H2O 两个单盐区、一个上述盐饱和不变点和两条单变量溶解度曲线组成。在皮策模型的基础上，用渗透系数和溶解度拟合了 Na2B4O5(OH)4 的皮策二元参数和混合参数。根据实验溶解度数据和参数计算了 Na2B4O7-10H2O 的溶解平衡常数。计算得出的 NaBO2-4H2O 和 Na2B4O7-10H2O 的溶解度和水活度、参数和溶解平衡常数与实验数据一致。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Isopiestic Determination of Water Activities and Solid–Liquid Equilibria in the Mixed Borate System NaB(OH)4–Na2B4O5(OH)4–H2O at 323.15 K

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Isopiestic Determination of Water Activities and Solid–Liquid Equilibria in the Mixed Borate System NaB(OH)4–Na2B4O5(OH)4–H2O at 323.15 K

The water activities and osmotic coefficients in the ternary system NaB(OH)₄–Na₂B₄O₅(OH)₄–H₂O at 323.15 K were investigated with the isopiestic method. The solubilities and physicochemical properties in the NaBO₂–Na₂B₄O₇–H₂O system at 323.15 K were studied with the isothermal dissolution equilibrium method. The phase diagram in the system consists of two single salt regions for NaBO₂·4H₂O and Na₂B₄O₇·10H₂O, one invariant point saturated with the above salts, and two univariant solubility curves. On the basis of the Pitzer model, the Pitzer binary parameters of Na₂B₄O₅(OH)₄ and mixing parameters were fitted with the osmotic coefficients and solubilities. The dissolution equilibrium constant of Na₂B₄O₇·10H₂O was calculated with the experimental solubility data and parameters. The calculated solubilities and water activities with the parameters and dissolution equilibrium constants of NaBO₂·4H₂O and Na₂B₄O₇·10H₂O agree with the experimental data.

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来源期刊

Journal of Chemical & Engineering Data 工程技术-工程：化工

CiteScore

5.20

自引率

19.20%

发文量

324

审稿时长

2.2 months

期刊介绍： The Journal of Chemical & Engineering Data is a monthly journal devoted to the publication of data obtained from both experiment and computation, which are viewed as complementary. It is the only American Chemical Society journal primarily concerned with articles containing data on the phase behavior and the physical, thermodynamic, and transport properties of well-defined materials, including complex mixtures of known compositions. While environmental and biological samples are of interest, their compositions must be known and reproducible. As a result, adsorption on natural product materials does not generally fit within the scope of Journal of Chemical & Engineering Data.