Solubility of xylitol in mixtures of water and methanol or ethanol: Experimental measurements and thermodynamic modeling

IF 2.7 3区工程技术 Q3 CHEMISTRY, PHYSICAL Fluid Phase Equilibria Pub Date : 2025-07-01 Epub Date: 2025-01-30 DOI:10.1016/j.fluid.2025.114358

Alessandro C. Galvão , Rafael L.P. Scatolin , Pedro F. Arce , Henrique I. Schwerz , Matheus V. Gomes , Weber S. Robazza

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Abstract

Xylitol is a sugar alcohol classified as a prominent building block in the chemical industry. Besides, it is an important component in the food and pharmaceutical industries as an alternative to sucrose. The separation and purification of this chemical depend on experimental and theoretical information about solid-liquid equilibrium as a function of temperature, pressure, and composition. Therefore, this work aims to collect experimental data on the solubility of xylitol in hydroalcoholic solutions of methanol or ethanol for the whole range of composition of the binary liquid mixture in the range between 293.2 K to 323.2 K. The data indicates that methanol is more capable than ethanol in interacting with xylitol. Moreover, the solubility of xylitol is directly proportional to temperature and the proportion of water in the solution. Binary interaction parameters were successfully optimized for the PC-SAFT and CPA equations of state, as well as for the NRTL activity coefficient model. Additionally, the solubility behavior was predicted using the modified UNIFAC and ASOG Gibbs energy models.

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木糖醇在水和甲醇或乙醇混合物中的溶解度：实验测量和热力学模型

木糖醇是一种糖醇，在化学工业中被列为重要的组成部分。此外，它是食品和制药工业中作为蔗糖替代品的重要组成部分。这种化学物质的分离和纯化依赖于固液平衡作为温度、压力和成分的函数的实验和理论信息。因此，本工作旨在收集在293.2 K至323.2 K的二元液体混合物的整个组成范围内木糖醇在甲醇或乙醇的氢醇溶液中的溶解度的实验数据。结果表明，甲醇比乙醇更容易与木糖醇发生相互作用。而且木糖醇的溶解度与温度和溶液中水的比例成正比。对PC-SAFT和CPA状态方程以及NRTL活度系数模型的二元相互作用参数进行了优化。此外，利用改进的UNIFAC和ASOG Gibbs能量模型预测了其溶解度行为。

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来源期刊

Fluid Phase Equilibria 工程技术-工程：化工

CiteScore

5.30

自引率

15.40%

发文量

223

审稿时长

53 days

期刊介绍： Fluid Phase Equilibria publishes high-quality papers dealing with experimental, theoretical, and applied research related to equilibrium and transport properties of fluids, solids, and interfaces. Subjects of interest include physical/phase and chemical equilibria; equilibrium and nonequilibrium thermophysical properties; fundamental thermodynamic relations; and stability. The systems central to the journal include pure substances and mixtures of organic and inorganic materials, including polymers, biochemicals, and surfactants with sufficient characterization of composition and purity for the results to be reproduced. Alloys are of interest only when thermodynamic studies are included, purely material studies will not be considered. In all cases, authors are expected to provide physical or chemical interpretations of the results. Experimental research can include measurements under all conditions of temperature, pressure, and composition, including critical and supercritical. Measurements are to be associated with systems and conditions of fundamental or applied interest, and may not be only a collection of routine data, such as physical property or solubility measurements at limited pressures and temperatures close to ambient, or surfactant studies focussed strictly on micellisation or micelle structure. Papers reporting common data must be accompanied by new physical insights and/or contemporary or new theory or techniques.