Phase equilibria and volumetric properties of mixtures of highly fluorinated alcohols and water

IF 2.8 3区工程技术 Q3 CHEMISTRY, PHYSICAL Fluid Phase Equilibria Pub Date : 2024-10-18 DOI:10.1016/j.fluid.2024.114258

Gonçalo M.C. Silva, José Santos Pereira, Milton Ponte, Tiago M. Eusébio, Diogo Machacaz, Pedro Morgado, Eduardo J.M. Filipe

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Abstract

New thermodynamic data are reported for aqueous solutions of highly fluorinated alcohols of different chain lengths. The liquid-liquid equilibrium (LLE) T-x diagram of the binary mixture (1H,1H-perfluoropropanol + water) was determined, as well as the LLE phase diagram of the ternary mixture (1H,1H-perfluoropropanol + 1-propanol + water) at 298.15 K and atmospheric pressure. The mutual solubilities of water with several linear perfluorinated alcohols (CF₃(CF₂)_nCH₂OH, n = 1–5) and the tertiary alcohol perfluoro-t-butanol ((CF₃)₃COH) were also measured at 298.15 K. Finally, volumetric properties such as the excess molar volumes and partial molal volumes at infinite dilution of the different fluorinated alcohols in water were also determined and discussed comparing with equivalent data from the literature for the corresponding hydrogenated alcohols.

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高氟化醇和水混合物的相平衡和体积特性

报告了不同链长的高氟化醇水溶液的新热力学数据。确定了二元混合物（1H,1H-全氟丙醇 + 水）的液液平衡（LLE）T-x 图，以及三元混合物（1H,1H-全氟丙醇 + 1-丙醇 + 水）在 298.15 K 和大气压力下的液液平衡相图。最后，还测定了水与几种线性全氟醇（CF3(CF2)nCH2OH，n = 1-5）和全氟叔丁醇（(CF3)3COH）在 298.15 K 下的互溶性。

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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.