Excess Thermodynamic Properties for Binary Mixtures of Ionic Liquid 1-Ethyl-3-methylimidazolium Ethyl Sulfate and 2-Methoxyethanol from T = (298.15 to 328.15) K at Atmospheric Pressure

Reddy, M. Srinivasa; Raju, K. Thomas S.S.; Nayeem, Sk. Md; Khan, Imran; Krishana, K. B. M.; Babu, B. Hari

doi:10.1007/s10953-016-0465-y

Cited by 29 publications

(11 citation statements)

References 71 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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“…Due to their unique properties such as high thermal stabilities, non‐flammability, and extremely low vapour pressures. Furthermore, it's possible to modify their chemical–physical properties and its molecular polarity as per the green esterification process 4–6 . But, now a days, the deep eutectic solvents (DES) is widely acknowledged as a new class of ILs analogous because they have shared many characteristics and properties which are similar to that of ILs.…”

Section: Introductionmentioning

confidence: 99%

Investigation of molecular interaction, performance of green solvent in esterification of ethanol and acetic acid at 298.15 K and at 1 atm

Ramalingam¹,

Banerjee

Santhi³

et al. 2023

Asia-Pacific J Chem Eng

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In the present study, the potential of a selective green solvent for the low temperature esterification were analysed. Hence, 1-ethyl-3-methylimidazoliumcholine chloride glycerol {[ChCl][Gly]} and choline chloride acetic acid {[ChCl][AA]} were chosen as a selective green solvent.Whereas water, ethanol, acetic acid can be treated as molecular solvent used in the esterification process. In this reason, density of eight binary mixtures over the entire mole fractions were measured at different temperature ranges. The results have been used to calculate the excess and derived thermodynamic properties, to measure the strength of molecular interaction between mixing components. Further, the sigma profile and sigma potential plot were generated and analysed. According to density, volumetric properties, molecular polarity results, 1-ethyl-3-methylimidazolium hydrogen sulphate [EMIM] [HSO 4 ] was chosen as green solvent for the green esterification process.Finally, [EMIM][HSO 4 ] based low temperature esterification were conducted at 298.15 K and 1 atm. 80.96% of n-BuAc was achieved.

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“…The positive u E values indicate the existence of strong intermolecular forces, while the negative u E values indicate the existence of weak intermolecular forces . The strong intermolecular forces between the mixing components results in the formation of more compact structures whereby the sound will travel faster through the mixture leading to positive u E values. − Negative u E values may be attributed to structure dissociation, which leads to volume expansion of the mixture, and hence, the u E decreases. , Moreover, the positive u E values suggest the existence of strong ion–dipole interactions between mixing components as well hydrogen bonding between the carboxylic acid molecules . It can be seen that the u E values are slightly more positive for IL–propionic acid mixtures.…”

Section: Resultsmentioning

confidence: 99%

Intermolecular Interactions between 1-Ethyl-3-methylimidazolium-Based Ionic Liquids with Carboxylic Acid at Different Temperatures via Thermodynamic and Spectroscopic Studies

Masilo

Bahadur

2021

J. Chem. Eng. Data

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In this work, we studied the intermolecular interactions of binary mixtures of 1-ethyl-3-methylimidazolium-based ionic liquids (ILs) with acetic or propionic acid. The physicochemical behavior of the binary mixtures was investigated by measuring the thermophysical properties, including the density (ρ), sound velocity (u), and refractive index (n D ), over the complete range of the IL mole fraction at T = 293.15−333.15 K and p = 0.1 MPa. The surface tension (γ) of the binary mixtures was also measured at T = 298.15 K but not determined under other studied temperatures due to the lack of a temperature controller. The excess molar volumes (V m E ), excess isentropic compressibilities (k s E ), excess sound velocity (u E ), intermolecular free length (L f ), deviation in the refractive index (Δn D ), and deviation in the surface tension (Δγ) were determined from experimental results. These parameters were further fitted to the Redlich−Kister polynomial equation. FTIR studies of pure components and binary systems at an equimolar composition were conducted to clarify results from thermodynamic properties and also analyze the intermolecular interactions occurring in the mixture. A survey on available literature data was carried out to compare with our experimental data. The selected ILs allowed us to compare the influence of the anion on the thermophysical and thermodynamic properties the mixtures.

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Excess Thermodynamic Properties for Binary Mixtures of Ionic Liquid 1-Ethyl-3-methylimidazolium Ethyl Sulfate and 2-Methoxyethanol from T = (298.15 to 328.15) K at Atmospheric Pressure

Cited by 29 publications

References 71 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

Investigation of molecular interaction, performance of green solvent in esterification of ethanol and acetic acid at 298.15 K and at 1 atm

Intermolecular Interactions between 1-Ethyl-3-methylimidazolium-Based Ionic Liquids with Carboxylic Acid at Different Temperatures via Thermodynamic and Spectroscopic Studies

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