Volumetric properties of binary mixtures of (ethylene glycol or glycerol + benzene or cyclohexane or hexane) at varying temperatures

IF 2.218 Q2 Chemistry Chemical Data Collections Pub Date : 2023-12-29 DOI:10.1016/j.cdc.2023.101109

M. Ramadevi, S. Kavitha, E.Jagadeesh Kumar, J.Kumara Swamy, B. Satheesh

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Abstract

The density values were measured as a function of mole fraction [(ethylene glycol or glycerol] for binary liquid systems such as [ethylene glycol or glycerol + (hexane or cyclohexane or benzene] at a temperature between 283.15 K and 328.15 K and atmospheric pressure. Using density data, the values of molar volumes, excess molar volume, and apparent molar volumes were calculated. Further, excess molar volume was correlated with the Redlich–Kister model. It is observed that in all systems, density data was decreased with an increase in the temperature and also increased with the concentration of ethylene glycol and glycerol. Excess molar volume for all the binary systems were positive deviations over the entire composition range. Each system exhibited more positive at a higher temperature. The obtained results are discussed in terms of packing efficiency, $π - OH$ bonding, and dispersion forces.

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乙二醇或甘油 + 苯或环己烷或正己烷）二元混合物在不同温度下的体积特性

在温度介于 283.15 K 和 328.15 K 之间以及大气压力下，测量了二元液体体系（如[乙二醇或甘油 + (己烷或环己烷或苯]）的密度值，密度值是摩尔分数[（乙二醇或甘油]的函数。利用密度数据计算出摩尔体积、过量摩尔体积和表观摩尔体积的值。此外，过量摩尔体积还与 Redlich-Kister 模型相关联。据观察，在所有体系中，密度数据都随着温度的升高而降低，并随着乙二醇和甘油浓度的升高而增加。在整个成分范围内，所有二元体系的过摩尔体积均为正偏差。每种体系在温度较高时都表现出更大的正偏差。本文从填料效率、π-OH 键和分散力的角度对所获得的结果进行了讨论。

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

Chemical Data Collections Chemistry-Chemistry (all)

CiteScore

6.10

自引率

0.00%

发文量

169

审稿时长

24 days

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