Influence of Epoxy Group in 2-Pyrrolidonium Ionic Liquid Interactions and Thermo-Physical Properties with Ethanoic or Propanoic Acid at Various Temperatures

Arumugam, Vasanthakumar; Redhi, Gan G.; Gengan, Robert Moonsamy

doi:10.1021/acssuschemeng.6b01262

Cited by 13 publications

(3 citation statements)

References 64 publications

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“…The experimental density (ρ), sound velocity ( u ), refractive index ( n D ), and surface tension (γ) for pure liquids [EMIM] + [BF 4 ] − , [EMIM] + [MeSO 4 ] − , acetic acid, and propionic acid obtained in this work are listed in Table alongside the literature data ,,,− from previous work for comparison .…”

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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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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“…The IL 2,3-dihydroxypropyl- N -methyl-2-oxopyrrolidinium chloride [(OH) 2 C 3 MPyr][Cl] was synthesized and characterized according to the techniques described in previous reports. − The synthesized IL was distilled for 20 h at 80 °C in order to remove any volatile species and water. The Karl-Fischer titration method was utilized to determine the moisture content in the IL, and it was found to be 0.003%.…”

Section: Methodsmentioning

confidence: 99%

Assessment of Pyrrolidinium-Based Ionic Liquid for the Separation of Binary Mixtures Based on Activity Coefficients at Infinite Dilution

et al. 2019

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Gas liquid chromatography was used to determine solute retention data for 33 volatile organic solvents: alkenes, alkanes, alkynes ketones, alcohols, aromatic hydrocarbons, tetrahydrofuran, acetonitrile, thiophene, and water in the new ionic liquid (IL) 2,3-dihydroxypropyl-Nmethyl-2-oxopyrrolidinium chloride [(OH) 2 C 3 MPyr][Cl]. This work was conducted in order to evaluate the IL for use in separation processes, and the evaluation was based on the experimental activity coefficients at infinite dilution. γ 13 ∞ was obtained at four different temperatures (313.15−343.15) K. The molecular interaction occurring within the solutes and IL was discussed. The types of interactions were further explained by calculating the following physicochemical properties at infinite dilution partial molar excess enthalpies, ΔH 1 E,∞ , Gibbs free energy, ΔG 1 E,∞, and the entropy term, T ref ΔS 1 E,∞ . This work provides insight about the nature of 2,3-dihydroxypropyl-N-methyl-2-oxopyrrolidinium chloride IL, the effect of the structure on thermodynamic properties, the influence of polar functional groups, and choosing a suitable solvent for distinct separation problems. Separation parameters (capacity and selectivity) for some of the petrochemical extraction problems (heptane/thiophene, heptane/benzene, heptane/1-heptyne) were calculated from γ 13 ∞ data and compared to the literature values with other ILs. The prescreen of separation agents can be determined from the activity coefficients at infinite dilution data.

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“…The purities of all the pure compounds were assessed by comparing our previously measured densities and speeds of sound with those reported in the literature, − and the results are displayed in Table . Table demonstrates that the ρ and u values have a slight variance that falls within the experimental error.…”

Section: Experimental Sectionmentioning

confidence: 99%

Experimental Measurements, Correlation, and Prediction Models to Study 1-Ethyl-3-methylimidazolium Tetrafluoroborate Ionic Liquid Ternary Mixtures

Masilo,

Singh,

Bahadur

et al. 2024

J. Chem. Eng. Data

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Volumetric and acoustic properties were obtained using density, ρ 123 , and speed of sound, u 123 , experimental values for ternary systems of {[EMIM][BF 4 ] (x 1 ) + acetic acid (x 2 ) + acetophenone (x 3 )} (mix 1 ) and {[EMIM][BF 4 ] (x 1 ) + propionic acid (x 2 ) + acetophenone (x 3 )} (mix 2 ) at T = (293.15−333.15) K and 0.1 MPa. The observed V m123 Eand Δk s123 data of the studied ternary mixtures were modeled with a total of 63 evaluated models, which resulted from a sum of each of nine predictive terms (no estimated parameters) with each of seven correlative terms (estimated parameters). The entire model is a correlative model, and if all of the parameters of the correlative term are set to zero, it becomes a predictive model. The ideal number of parameters in the correlation was then approximated using standard deviations (σ). For mix 1 , V m123 E was only negative and Δk s123 was only positive, while for mix 2 both negative and positive results were found for each property. Also, quantitative results point out that mix 1 is closer to ideal behavior than mix 2 . The modeling for mix 2 employed more complex equations, with more parameters, and even so presented worse deviations than for mix 1 . These results evidence the effect of one CH 2 in the acid chain on the thermodynamic properties of these mixtures.

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Influence of Epoxy Group in 2-Pyrrolidonium Ionic Liquid Interactions and Thermo-Physical Properties with Ethanoic or Propanoic Acid at Various Temperatures

Cited by 13 publications

References 64 publications

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

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

Assessment of Pyrrolidinium-Based Ionic Liquid for the Separation of Binary Mixtures Based on Activity Coefficients at Infinite Dilution

Experimental Measurements, Correlation, and Prediction Models to Study 1-Ethyl-3-methylimidazolium Tetrafluoroborate Ionic Liquid Ternary Mixtures

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