Molecular interactions in (2,4,6-trimethyl-1,3,5-trioxane+n-alkyl acetates) at T=(298.15, 303.15, and 308.15)K

Wankhede, N. N.; Wankhede, D. S.; Lande, Machhindra K.; Arbad, Balasaheb R.

doi:10.1016/j.jct.2006.03.014

Cited by 32 publications

(14 citation statements)

References 14 publications

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“…These two ion pairs of oxygen atom have the tendency of electron donation. The above three organic solvents have great attention due to a number of factors like: (1) self‐association and (ii) change in the extent and strength of H‐bonding in the liquid mixture, which significantly affects their volumetric properties 15–19 Ionic Liquids (Table 1): Imidazolium based ionic liquids are the five‐membered ring compounds containing two different kinds of alkyl substitution location and one acidic H‐atom which is connected with C5 in their molecular structure.…”

Section: Resultsmentioning

confidence: 99%

Experimental and theoretical investigation of molecular interaction and molecular polarity of organic solvent with ionic liquids and deep eutectic solvents at T (298.15–343.15) K and 1 atm

Ramalingam¹,

Christabel²,

Vatti

et al. 2020

Asia-Pacific J Chem Eng

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Densities of the binary mixtures of organic solvents (acetic acid (HAc), n‐butanol (n‐BuOH) and n‐ butyl acetate (n‐BuAc)) with 1‐ethyl‐3‐methylimidazolium hydrogen sulphate {[EMIM][HSO4]: IL1}, 1‐ethyl‐3‐methyimidazolium ethyl sulphate {[EMIM][EtSO4]: IL2}, 1‐butyl‐3‐methylimidazolium acetate {[BMIM][OAc]: IL3}, 1‐butyl‐3‐methylimidazolium bis (trifluoromethylsulfonyl)imide, {[BMIM][NtF2]: IL4}} and/or Deep Eutectic Solvents (DESs) {choline chloride‐acetic acid [ChCl][AA]: DES1}, choline chloride‐glycerol [ChCl][Gly]: DES2), were measured over the entire composition range at T (293.15–343.15) K and 1 atm. The volumteric properties and derived thermodynamic properties of mixed solvents were calculated from the experimental data in order to understand the specific interactions and/or non‐specific interactions between mixed solvents during mixing at 298.15 K and 1 atm. Further, the molecular polarity of all the studied components were analyzed using COSMO‐RS model.

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Section: Resultsmentioning

confidence: 99%

Experimental and theoretical investigation of molecular interaction and molecular polarity of organic solvent with ionic liquids and deep eutectic solvents at T (298.15–343.15) K and 1 atm

Ramalingam¹,

Christabel²,

Vatti

et al. 2020

Asia-Pacific J Chem Eng

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“…Thus, the Ionic Liquid in a mixture can be explained by two different types of interactions: (1) if the sign and magnitude of the excess molar volume is positive implies physical interaction mainly via dispersion forces or weak dipole-dipole interaction; (2) negative values refers to the chemical or specific interaction which includes charges transfer, CH-π bond interaction n-π interactions, formation of hydrogen bond, and so forth. The sign and magnitude of the excess molar volume is negative upon mixing with two similar aromatic structure of molecules indicates a strong ππ stacking [47,48].…”

Section: Resultsmentioning

confidence: 99%

Physiochemical Properties of Hydrodenitrification and Hydrodesulphurization Inhibiting Compounds with 1‐Ethyl‐3‐Methylimidazolium Ethylsulphate at T = (298.15 to 323.15) K and p = 1 Bar

Ramalingam

Banerjee

2011

Journal of Thermodynamics

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This work investigates the ability of 1-ethyl-3-methylimidazolium ethylsulphate ([emim][EtSO4]) as a green and tuneable solvent for denitrification and desulphurization of diesel oil. Experimental density, surface tension, and refractive index data have been measured for the following systems: [emim][EtSO4](1) + pyridine(2), [emim][EtSO4](1)+ pyrrole(2), [emim][EtSO4](1) + quinoline(2), [emim][EtSO4](1) + indoline(2), [emim][EtSO4](1) + thiophene(2), and [emim][EtSO4](1) + water(2) over the entire mole fraction of [emim][EtSO4] at temperatures of (298.15 to 323.15) K and at atmospheric pressure. Further, from experimental density values, coefficient of thermal expansivity and excess molar volume were also calculated. It was found that the heteroaromatic nitrogen/sulphur compounds and water are completely miscible in the [emim][EtSO4] ionic liquid. The surface tension values were found to increase while the refractive index decrease with increasing mole fraction of [emim][EtSO4]. On the other hand, dissimilar molecule such as water showed mobility of ions on mixing resulting in lower surface tension. The experimental values of surface tension increased in the order: thiophene > pyridine > pyrrole > indoline > quinoline and for refractive index: quinoline > indoline > pyrrole > pyridine > thiophene > water. It was found that the composition of [emim][EtSO4] has a greater influence than temperature in deciding the densities, surface, optical, and thermodynamic properties.

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“…It is noted that the length of alkyl-chain in cation as well as the variety of Generally, V E can be considered arising from three types of interactions between two components in the mixtures: (i) physical interaction mainly consisting of dispersion forces or weak dipole-dipole interactions and making a positive contribution. (ii) Chemical or specific interactions which include charge transfer, formation of hydrogen bonds and other complex forming interactions resulting in negative contribution, and (iii) the structural contributions arising from geometrical fitting of one component into another due to difference in molar volumes resulting in negative excess molar volume [16]. Laboratory Unit Operations and Experimental Methods in Chemical Engineering system has positive deviation due to very strong physical interaction between these two IL's at molecular level.…”

Section: Theorymentioning

confidence: 99%

Evaluation of Solution Thermodynamic Properties of Mixed Ionic Liquids at Different Temperatures (293.15–343.15) K

Christabel¹,

Reji²,

Ramalingam³

2018

Laboratory Unit Operations and Experimental Methods in Chemical Engineering

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The solution thermodynamic properties of mixed ionic liquids such as density, excess molar volume, partial molar volume and apparent molar volume are highly influential on the design of an effective separation unit and in the optimization of operating parameters like pressure, temperature and concentration for the separation processes. Therefore, it could be better to do a prior experimental study on of the solution thermodynamic properties of mixed ionic liquids at different temperatures for the whole mole fractions rather than doing separation characterization studies like selectivity, efficiency, distribution coefficient and performance index. In addition, the recovery and regeneration of ionic liquids also challenge researchers and separation scientists in several fields of applications. Therefore, in this chapter, density of pure 1-butyl-3-methyl imidazolium bis (trifluoromethylsulfonyl) imide {[BIMIM][NtF 2 ]}, 1-ethyl-3-methylimidazolium ethyl sulfate {[EMIM][ESO 4 ]}, 1-ethyl-3-methylimidazolium hydrogen sulfate {[EMIM][HSO 4 ]} and 1-butyl-3-methylimidazolium acetate {[BMIM][OAc]} and its binary mixtures have been measured at T (293.15-343.15) K. From the measured densities, isobaric expansivity, excess molar volume, partial molar volume, excess partial molar volume, and apparent molar volume have been calculated. Results were discussed in terms of physical interaction, chemical interaction and structural orientation at molecular level and their temperature and composition dependency.

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Molecular interactions in (2,4,6-trimethyl-1,3,5-trioxane+n-alkyl acetates) at T=(298.15, 303.15, and 308.15)K

Cited by 32 publications

References 14 publications

Experimental and theoretical investigation of molecular interaction and molecular polarity of organic solvent with ionic liquids and deep eutectic solvents at T (298.15–343.15) K and 1 atm

Experimental and theoretical investigation of molecular interaction and molecular polarity of organic solvent with ionic liquids and deep eutectic solvents at T (298.15–343.15) K and 1 atm

Physiochemical Properties of Hydrodenitrification and Hydrodesulphurization Inhibiting Compounds with 1‐Ethyl‐3‐Methylimidazolium Ethylsulphate at T = (298.15 to 323.15) K and p = 1 Bar

Evaluation of Solution Thermodynamic Properties of Mixed Ionic Liquids at Different Temperatures (293.15–343.15) K

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