Solubility measurement and data correlation of 2-ethoxy-1-naphthoic acid in twelve pure solvents at temperatures from 278.15 to 323.15 K

IF 2.2 3区工程技术 Q3 CHEMISTRY, PHYSICAL

Journal of Chemical Thermodynamics Pub Date : 2024-08-08 DOI:10.1016/j.jct.2024.107365

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引用次数: 0

Abstract

The solubility of 2-ethoxy-1-naphthoic acid was determined experimentally in 12 pure solvents (methanol, ethanol, n-propanol, i-propanol, i-butanol, n-pentanol, methyl acetate, ethyl acetate, n-propyl acetate, i-propyl acetate, acetone and acetonitrile) using the gravimetric method in the temperature range of 278.15 K to 323.15 K at atmospheric pressure. The study found that solubility increased with temperature, with acetone exhibiting the highest solubility and acetonitrile the lowest at 298.15 K. Furthermore, the influence of solvent properties on solubility, such as polarity and dielectric constant, was analyzed, showing a positive correlation. Mathematical models (including modified Apelblat, NRTL, Margules, UNIQUAC and λh models) were employed to analyze the dissolution process, with the modified Apelblat model providing the best fit to the experimental data. Additionally, thermodynamic properties of the dissolution process were obtained using the Van’t Hoff equation, indicating an entropy-increasing process with heat absorption. Overall, this study elucidates the solubility behavior and related mechanisms of 2-ethoxy-1-naphthoic acid in various solvents, providing theoretical support for its application in solution systems.

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2-ethoxy-1-naphthoic acid 在 278.15 至 323.15 K 温度的十二种纯溶剂中的溶解度测量和数据相关性

在 278.15 K 至 323.15 K 的温度范围内，在大气压力下，采用重量法测定了 2-ethoxy-1-naphthoic acid 在 12 种纯溶剂（甲醇、乙醇、正丙醇、异丙醇、正丁醇、正戊醇、乙酸甲酯、乙酸乙酯、乙酸正丙酯、乙酸异丙酯、丙酮和乙腈）中的溶解度。研究还分析了极性和介电常数等溶剂特性对溶解度的影响，结果显示两者呈正相关。采用数学模型（包括修正的 Apelblat 模型、NRTL 模型、Margules 模型、UNIQUAC 模型和 λh 模型）分析了溶解过程，其中修正的 Apelblat 模型与实验数据的拟合效果最好。此外，还利用 Van't Hoff 方程获得了溶解过程的热力学性质，表明这是一个熵增加的吸热过程。总之，本研究阐明了 2-ethoxy-1-naphthoic acid 在各种溶剂中的溶解行为和相关机理，为其在溶液体系中的应用提供了理论支持。

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来源期刊

Journal of Chemical Thermodynamics 工程技术-热力学

CiteScore

5.60

自引率

15.40%

发文量

199

审稿时长

79 days

期刊介绍： The Journal of Chemical Thermodynamics exists primarily for dissemination of significant new knowledge in experimental equilibrium thermodynamics and transport properties of chemical systems. The defining attributes of The Journal are the quality and relevance of the papers published. The Journal publishes work relating to gases, liquids, solids, polymers, mixtures, solutions and interfaces. Studies on systems with variability, such as biological or bio-based materials, gas hydrates, among others, will also be considered provided these are well characterized and reproducible where possible. Experimental methods should be described in sufficient detail to allow critical assessment of the accuracy claimed. Authors are encouraged to provide physical or chemical interpretations of the results. Articles can contain modelling sections providing representations of data or molecular insights into the properties or transformations studied. Theoretical papers on chemical thermodynamics using molecular theory or modelling are also considered. The Journal welcomes review articles in the field of chemical thermodynamics but prospective authors should first consult one of the Editors concerning the suitability of the proposed review. Contributions of a routine nature or reporting on uncharacterised materials are not accepted.