Study of thermophysical properties of the binary mixtures of ionic liquid 1-ethyl-3-methylimidazolium ethylsulfate and 2-propoxyethanol from  T  =  (298.15 to 328.15)  K at atmospheric pressure

Reddy, M. Srinivasa; Raju, K. Thomas S.S.; Rao, A. S.; Sharmila, N.; Babu, B. Hari

doi:10.1016/j.jct.2016.03.028

Cited by 25 publications

(7 citation statements)

References 43 publications

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“…The experimental values of the refractive index are listed in Supporting Information Table S1 and presented in details in Figure S1. With the exception of data sets reported by Montalban et al, Reddy et al, and Larriba et al, the consistency between n D conducted by us and the literature values − for [C 2 C 1 im][EtSO 4 ] is very good. The relative deviations RD (RD = 100( y exp – y lit )/ y exp , where y exp denotes data obtained in this work, and y lit denotes literature data) vary from −0.01 to 0.04%, and the absolute average relative deviation AARD (AARD = (100/ N )∑ i =1 n |( y exp, i – y lit, i )/ y exp, i )/ y exp, i |, where N is the number of data points) is in the following range: 0.02–0.03%.…”

Section: Methodssupporting

confidence: 76%

Comparative Study of the High Pressure Thermophysical Properties of 1-Ethyl-3-methylimidazolium and 1,3-Diethylimidazolium Ethyl Sulfates for Use as Sustainable and Efficient Hydraulic Fluids

Dzida

Musiał

Zorębski

et al. 2018

ACS Sustainable Chem. Eng.

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In this work, we discussed and compared new acoustic (speed of sound), transport (viscosity), surface (surface tension and contact angle on stainless steel and glass), and thermophysical properties with special regard for compressibilities and isobaric thermal expansion of 1,3-diethylimidazolium ethyl sulfate ([C2C2im][EtSO4]) with those of 1-ethyl-3-methylimidazolium ethyl sulfate ([C2C1im][EtSO4]), the reference mineral, synthetic, and biodegradable oils as well as hydraulic oils for use as hydraulic fluids. The refractive indices, NMR spectra, and cytotoxicities of [C2C1im][EtSO4] and [C2C2im][EtSO4] were also investigated. [C2C1im][EtSO4] and [C2C2im][EtSO4] have low isothermal compressibility and isobaric thermal expansion values, which are weakly dependent on the pressure and temperature. The viscosity, surface tension, and contact angle of [C2C2im][EtSO4] are more similar to that of commercial hydraulic oils than [C2C1im][EtSO4]. The investigated ILs have a 20 times lower toxicity on normal fibroblast from human new-born skin than that of bis(trifluoromethylsulfonyl)imide-based ILs. The presented results show that [C2C2im][EtSO4] can potentially be used as a hydraulic fluid in the same way as [C2C1im][EtSO4].

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Section: Methodssupporting

confidence: 76%

Comparative Study of the High Pressure Thermophysical Properties of 1-Ethyl-3-methylimidazolium and 1,3-Diethylimidazolium Ethyl Sulfates for Use as Sustainable and Efficient Hydraulic Fluids

Dzida

Musiał

Zorębski

et al. 2018

ACS Sustainable Chem. Eng.

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“…Ionic liquids (ILs) are liquid salts composed of large-volume organic cations with either small-volume organic or inorganic anions, which have attracted great attention in recent years for their unique physicochemical properties. − Due to their high viscosity and weak transport capabilities, the preparation of mixed systems involving ILs, solvents, or other liquids has become an easy way to widen the applications of ILs. , …”

Section: Introductionmentioning

confidence: 99%

Density, Electrical Conductivity, Dynamic Viscosity, Excess Properties, and Molecular Interactions of Ionic Liquid 1-Cyanopropyl-3-methylimidazolium Tetrafluoroborate and Binary System with Acetonitrile

Zhang

Liu

et al. 2018

J. Chem. Eng. Data

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In this work, a novel binary mixture system containing the ionic liquid (IL) 1-cyanopropyl-3-methylimidazolium tetrafluoroborate ([PCNmim][BF4]) and acetonitrile (AN) was prepared. The density, dynamic viscosity, and electrical conductivity of the pure IL and the binary system at different ratios were determined at atmospheric pressure from 288.15 to 323.15 K. We have estimated a series of important thermodynamic parameters of the pure IL by empirical equations and correlated the temperature dependences of the electrical conductivity and dynamic viscosity of the binary system using both the Vogel–Fulcher–Tamman and Arrhenius equations. We also focused on the excess molar volume, V E, of the binary mixture system, and the results of the V E were correlated to the Redlich–Kister polynomial equation. Then, the interstice model and excess volume were employed to investigate the structural properties and packing structure, respectively, of the pure [PCNmim][BF4] and IL + AN mixtures. For a deep understanding of the intermolecular interactions of the binary system, the structure, energy, and COSMO charge distribution of the cation and anion of the IL and the AN molecule were calculated by density functional theory calculations to evaluate the intermolecular interactions of the IL and AN by means of the variations in the infrared (IR) spectrum.

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“…The measurement cell temperature was controlled and measured by two integrated Pt 100 platinum thermometers together with Peltier elements. Therefore, considering the purity of the sample and the reproducibility of instrument, the standard uncertainties of temperature, density, and speed of sound are estimated to be ± 0.1 K, ± 1 × 10 −4 g•cm −3 , and ± 0.1 m•s −1 , respectively [30].…”

Section: Measurements Of Density and Speed Of Sound Of Binary Solutionsmentioning

confidence: 99%

Investigation of the Effect of Alkyl Chain Length on Molecular Interactions Between Methyl Benzoate with Alcohols: A Study of Physicochemical Properties

et al. 2020

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Densities, speeds of sound, and viscosities of binary mixtures of methyl benzoate (MB) with ethanol, 1-propanol, and 1-butanol were measured at temperature ranging from T = 293.2 to 313.2 K and refractive indices were determined at T = 303.2 K. Excess molar volumes, V E , isentropic compressibility deviations ∆κ s and viscosity deviations, Δη, were obtained and fitted with the Redlich-Kister equation with satisfactory results. Based on the measured and derived physicochemical properties, the influence of the alkyl chain length of the alcohol on the molecular interactions of the studied mixtures was explored. The results show that both hydrogen bond interaction between carbonyl group of MB and hydroxyl group of alcohol and the packing efficiency, such as accommodation of alcohol in the interstice of MB, play an important role in the microstructure of the mixtures, which leads to the disruption of alcohol with the addition of MB. Moreover, by comparing V E , ∆κ s and Δη values of MB (1) + alcohol (2) systems at T = 303.2 K, it is found that the strength of hydrogen bond interaction and the packing efficiency significantly weakens with increasing alkyl chain length of alcohol in going from ethanol to 1-butanol, resulting in the V E values of the studied systems gradually changing from a negative deviation to an S shape, the ∆κ s and Δη values have negative deviations, and the ∆n D values have positive deviations. The obtained results will provide thermodynamic guidance for the industrial purification of methyl benzoate.

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Study of thermophysical properties of the binary mixtures of ionic liquid 1-ethyl-3-methylimidazolium ethylsulfate and 2-propoxyethanol from T = (298.15 to 328.15) K at atmospheric pressure

Cited by 25 publications

References 43 publications

Comparative Study of the High Pressure Thermophysical Properties of 1-Ethyl-3-methylimidazolium and 1,3-Diethylimidazolium Ethyl Sulfates for Use as Sustainable and Efficient Hydraulic Fluids

Comparative Study of the High Pressure Thermophysical Properties of 1-Ethyl-3-methylimidazolium and 1,3-Diethylimidazolium Ethyl Sulfates for Use as Sustainable and Efficient Hydraulic Fluids

Density, Electrical Conductivity, Dynamic Viscosity, Excess Properties, and Molecular Interactions of Ionic Liquid 1-Cyanopropyl-3-methylimidazolium Tetrafluoroborate and Binary System with Acetonitrile

Investigation of the Effect of Alkyl Chain Length on Molecular Interactions Between Methyl Benzoate with Alcohols: A Study of Physicochemical Properties

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