Comparative Evaluation of Thermophysical and Acoustical Properties of Binary Mixtures of Cumene + Methyl Acetate and Cumene + Ethyl Acetate over the Range of Molar Compositions and Temperatures from 298.15 to 318.15 K: Experimental Measurements and Application of Deviation Modeling

IF 2.1 3区 工程技术 Q3 CHEMISTRY, MULTIDISCIPLINARY
Padmanaban Radhakrishnan, Gayathri Ahobilam, Seema Kapoor, Gopalan Anantha Iyengar*, Dong-Eun Lee, Venkatramanan Kannan*, Vaithinathan Karthikeyan, Dani Samer Assi and Vellaisamy A. L. Roy, 
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Abstract

The viscosity (η), activation energy (Ea), density (ρ), ultrasonic velocity (U), and refractive index (nD) were determined for binary liquid mixtures of cumene (CM, an alkylbenzene) with ethyl acetate (EA) or methyl acetate (MA) over different mole fractions of CM (0.08–0.87) in a wide temperature range (298.15–313.15 K). The increasing trend in η with the mole fraction of CM was correlated with the strengthening of the molecular interactions between the constituent components. Various theoretical models were utilized to predict the deviation in the properties of the binary mixtures over the compositions. Typically, the Kandoll and Monroe models predicted lower values for η, while models like Gruenberg and Nissan suggested higher values for the CM + MA binary mixture. Likewise, the usefulness of the models in predicting other properties is detailed. The average percentage of deviation (APD) was used to predict the most suitable model for η, U, and nD. The various acoustical properties and excess parameters were calculated and interpreted in terms of charge transfer, dipole–dipole, and dipole-induced dipole interactions. The results suggested that the presence of both aryl and aliphatic moieties in CM contributed to the intermolecular interactions with nearly nonpolar (EA/MA) molecules.

Abstract Image

在298.15 ~ 318.15 K的摩尔组成和温度范围内,异丙烯+乙酸甲酯和异丙烯+乙酸乙酯二元混合物的热物理和声学性能的比较评价:实验测量和偏差模型的应用
测定了异丙苯(CM,一种烷基苯)与乙酸乙酯(Ea)或乙酸甲酯(MA)的二元液体混合物的粘度(η)、活化能(Ea)、密度(ρ)、超声速度(U)和折射率(nD),测定了异丙苯(CM,一种烷基苯)与乙酸乙酯(Ea)或乙酸甲酯(MA)在不同摩尔分数CM(0.08-0.87)上的温度范围(298.15-313.15 K)。η随CM摩尔分数的增大趋势与组分间分子相互作用的增强有关。利用各种理论模型来预测二元混合物在组成上的性质偏差。通常,Kandoll和Monroe模型预测η值较低,而Gruenberg和Nissan模型预测CM + MA二元混合物的η值较高。同样,还详细介绍了模型在预测其他属性方面的有用性。利用平均偏差百分比(APD)预测η、U和nD的最合适模型。计算了各种声学特性和多余参数,并根据电荷转移、偶极子-偶极子和偶极子诱导的偶极子相互作用进行了解释。结果表明,CM中芳基和脂肪族基团的存在有助于与近非极性(EA/MA)分子相互作用。
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来源期刊
Journal of Chemical & Engineering Data
Journal of Chemical & Engineering Data 工程技术-工程:化工
CiteScore
5.20
自引率
19.20%
发文量
324
审稿时长
2.2 months
期刊介绍: The Journal of Chemical & Engineering Data is a monthly journal devoted to the publication of data obtained from both experiment and computation, which are viewed as complementary. It is the only American Chemical Society journal primarily concerned with articles containing data on the phase behavior and the physical, thermodynamic, and transport properties of well-defined materials, including complex mixtures of known compositions. While environmental and biological samples are of interest, their compositions must be known and reproducible. As a result, adsorption on natural product materials does not generally fit within the scope of Journal of Chemical & Engineering Data.
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