在 294.55 K 至 333.65 K 的纯溶剂和二元溶剂中测量 4-胍基苯甲酸盐酸盐的溶解度、相关性和热力学特性

IF 2.2 3区工程技术 Q3 CHEMISTRY, PHYSICAL

Journal of Chemical Thermodynamics Pub Date : 2023-12-13 DOI:10.1016/j.jct.2023.107230

Bowen Zhang, Qiang Huang, Kang Peng, Chunlan Ban, Ziyang Zhou, Jinghui Liu, Guopeng Shen

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引用次数: 0

摘要

采用动态饱和法测定了 4-胍基苯甲酸盐酸盐（4-GABCL）在纯溶剂（H2O、甲醇、乙醇、正丙醇、异丙醇、1-丁醇和 1-戊醇）和两种二元溶剂（H2O + 乙醇/异丙醇）中的溶解度，温度范围为 294.55 K-333.65 K，测量条件为常压。从测量结果可以看出，4-GABCL 在纯溶剂和二元溶剂中的溶解度都随着温度的升高而增加。4-GABCL 在纯溶剂中的溶解度顺序为：甲醇；H2O；正丙醇；乙醇；正丁醇；异丙醇；正戊醇。随着乙醇和异丙醇摩尔分数的增加，4-GABCL 在二元溶剂中的溶解度呈先增大后减小的趋势，溶质在二元溶剂中的溶解度大于在单溶剂中的溶解度。此外，Ideal 模型、Apelblat 模型、λh 模型、Wilson 模型和 NRTL 模型也被用于关联 4-GABCL 在纯溶剂和二元溶剂中的溶解度。相关效应表明，Wilson 模型的相关性最好。KAT-LSER 模型进一步研究了溶剂对 4-GABCL 溶解度的影响。利用威尔逊方程和溶剂数据，计算和分析了 4-GABCL 在所有实验溶剂中的混合和溶解热力学性质。结果表明，在研究体系中，4-GABCL 的混合和溶解是自发的、内热的和熵驱动的。此外，纯溶剂的溶解度顺序与温度为 318.15 k 时的溶解熵一致。

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Solubility measurements, correlation, and thermodynamic characterization of 4-guanidinobenzoic acid hydrochloride in pure and binary solvents from 294.55 K to 333.65 K

The solubility of 4-guanidinobenzoic acid hydrochloride (4-GABCL) in pure solvents (H₂O, methanol, ethanol, n-propanol, isopropanol, 1-butanol, and 1-pentanol) and two binary solvents (H₂O + ethanol/isopropanol) were determined by the dynamic saturation method in the temperature range of 294.55 K–333.65 K under atmospheric pressure. From the measurement results, it could be observed that the solubility of 4-GABCL in both pure and binary solvents all increased with increasing temperature. The solubility order of 4-GABCL in pure solvents was ranked as follows: methanol > H₂O > n-propanol > ethanol > n-butanol > isopropanol > n-pentanol. The solubility of 4-GABCL in binary solvents tended to increase and then decrease with increasing molar fractions of ethanol and isopropanol, and the solubility of the solute in the binary solvents was greater than that of each in the monosolvents. In addition, Ideal model, Apelblat model, λh model, Wilson model, and NRTL model had been used to correlate the solubility of 4-GABCL in pure and binary solvents. Correlated effects show that the Wilson model gives the best correlation. The influence of solvents on the solubility of 4-GABCL was further studied by KAT-LSER model. The results showed that the solubility was mainly affected by the polarizability and the self-viscosity of the solvent.The mixing and dissolution thermodynamic properties of 4-GABCL in all experimental solvents had been calculated and analyzed by using the Wilson equation and solvent data. It was determined that the mixing and dissolution of 4-GABCL were spontaneous, endothermic and entropy-driven in the study systems. Besides, the solubility order of the pure solvent is consistent with the dissolution entropy at a temperature of 318.15 k.

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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.