Chemical equilibrium and liquid–liquid equilibrium in ternary mixtures of formaldehyde, water, and isobutanol/ n-butanol between 295 K and 348 K

IF 2.7 3区工程技术 Q3 CHEMISTRY, PHYSICAL Fluid Phase Equilibria Pub Date : 2025-07-01 Epub Date: 2025-02-12 DOI:10.1016/j.fluid.2025.114364

Lukas Winklbauer, Jakob Burger

引用次数: 0

Abstract

Mixtures of formaldehyde, water, and isobutanol/ n-butanol exhibit a ternary liquid–liquid equilibrium, as water and butanol are only partially miscible. In the present work, we study the chemical and liquid–liquid equilibria of the systems (formaldehyde + water + isobutanol) and (formaldehyde + water + n-butanol). The species distributions in the chemical equilibrium of both systems are measured between 298 K and 348 K using nuclear magnetic resonance (NMR) spectroscopy. Ternary liquid–liquid equilibrium data are reported between 295 K and 324 K. The experimental data is used to develop a model of the reactive liquid–liquid equilibria for mixtures of formaldehyde, water, and isobutanol/n-butanol.

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甲醛、水和异丁醇/正丁醇三元混合物在295 K和348 K之间的化学平衡和液-液平衡

甲醛、水和异丁醇/正丁醇的混合物表现出三元液-液平衡，因为水和丁醇只能部分混溶。本文研究了甲醛+水+异丁醇体系和甲醛+水+正丁醇体系的化学平衡和液-液平衡。在298k ~ 348k范围内，用核磁共振（NMR）谱法测定了两种体系化学平衡中的物质分布。在295k ~ 324k范围内报道了三元液-液平衡数据。实验数据用于开发甲醛，水和异丁醇/正丁醇混合物的反应液-液平衡模型。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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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.