Quinary liquid–liquid equilibria for mixtures of nonane+undecane+two pairs of aromatics (benzene/toluene/m-xylene)+sulfolane at 298.15 and 313.15K

Santiago, Rílvia S.; Aznar, Martı́n

doi:10.1016/j.fluid.2007.03.023

Cited by 11 publications

(8 citation statements)

References 34 publications

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“…Moreover, multicomponent systems with more than three constituents have been published. Those publications focus on the addition of a modifier to the extraction solvent or the use of two typical solvents ,,,,,, for the extraction of mixed aromatics from a single or multiple aliphatics. ,,,− …”

Section: Introductionmentioning

confidence: 99%

Comparison of Ionic Liquids to Conventional Organic Solvents for Extraction of Aromatics from Aliphatics

2016

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Commonly used solvents for separation of aromatics from aliphatics using liquid−liquid extraction are reviewed in terms of their physical properties and separation performance. The experimental liquid− liquid measurements for conventional solvents are contrasted with the phase behavior when using an ionic liquid as the extracting component. For comparison purposes, ternary systems of heptane + toluene + extraction solvent are used as representative mixtures, where sulfolane is the main organic extraction solvent discussed. Since ionic liquid properties are drastically changed by changing the anion, comparisons are performed for 1ethyl-3-methylimidazolium based ionic liquids using different anions. Ionic liquids containing cyano-substituted and bis(trifluoromethylsulfonyl)imide anions provide good selectivities and distribution ratios. On the basis of the phase behavior and capacities, as well as their relatively low viscosities, they appear to be competitive alternatives to organic solvents.

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Section: Introductionmentioning

confidence: 99%

Comparison of Ionic Liquids to Conventional Organic Solvents for Extraction of Aromatics from Aliphatics

2016

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“…Considering the important role of a suitable solvent in the extraction process operations, the research for finding new solvents, in (liquid + liquid) extraction is an ongoing investigation [4][5][6][7][8]. In this line of research, the theoretical and experimental studies of (liquid + liquid) equilibrium (LLE) for different systems were presented in the literature [9][10][11]. The basic aim of these investigations was focused on the finding a non-toxic, inexpensive, and easily recoverable solvent for (liquid + liquid) extraction processes in the industrial units [12].…”

Section: Introductionmentioning

confidence: 99%

(Liquid+liquid) equilibria for ternary mixtures of (ethylene glycol+toluene+n-octane)

Mohsen-Nia¹,

Doulabi²,

Manousiouthakis³

2008

The Journal of Chemical Thermodynamics

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“…This follows the work of Santiago and Aznar, where three quinary systems were presented by pseudo-ternary graphs. 37 The quinary systems investigated were TBPBr/EG (1) + pyridine (2) + indoline (3) + DBT (4) + n -hexadecane (5) and TBABr/EG (1) + pyridine (2) + indoline (3) + DBT (4) + n -hexadecane (5). Othmer–Tobias and Hand empirical correlations were used to assess the consistency of the experimental results.…”

Section: Resultsmentioning

confidence: 99%

Simultaneous Extraction of Sulfur and Nitrogen Compounds from Model Diesel Fuel Using Neoteric Green Solvents

et al. 2021

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Removal of nitrogen and sulfur compounds from diesel fuel is essential to comply with the increasing stringent regulations. The extraction capability of two deep eutectic solvents, namely, tetrabutylphosphoniumbromide/ethylene glycol, TBPBr/EG, with molar ratio 1:2, and tetrabutylammoniumbromide/ethylene glycol, TBABr/EG, with molar ratio 1:2, in simultaneously extracting basic nitrogen, nonbasic nitrogen, and sulfur compounds represented by pyridine, indoline, and dibenzothiophene (DBT) from n -hexadecane, was investigated. Two pseudo-ternary phase diagrams of (TBPBr/EG + (pyridine + indoline + DBT) + n -hexadecane) and (TBABr/EG + (pyridine + indoline + DBT) + n -hexadecane) were predicted via a conductor-like screening model for real solvents (COSMO-RS) and experimentally validated at 298.15 K and 1 atm. Both solvents showed zero cross-contamination, indicating the suitability of all solvents as extraction solvents. The tie lines obtained for both COSMO-RS and experiments were in agreement and had root-mean-square deviation (RMSD) values of less than 5% for both systems. Selectivity and distribution ratio calculated indicates the suitability of both solvents in extracting sulfur and nitrogen compounds from hexadecane. Two new parameters, namely, extraction efficiency, α, and extraction affinity, β, were introduced to ease the performance comparison of both solvents. TBPBr/EG shows a slightly better performance than TBABr/EG. Other than that, the presence of multiple solutes shows low effects on the performance of these solvents.

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Quinary liquid–liquid equilibria for mixtures of nonane+undecane+two pairs of aromatics (benzene/toluene/m-xylene)+sulfolane at 298.15 and 313.15K

Cited by 11 publications

References 34 publications

Comparison of Ionic Liquids to Conventional Organic Solvents for Extraction of Aromatics from Aliphatics

Comparison of Ionic Liquids to Conventional Organic Solvents for Extraction of Aromatics from Aliphatics

(Liquid+liquid) equilibria for ternary mixtures of (ethylene glycol+toluene+n-octane)

Simultaneous Extraction of Sulfur and Nitrogen Compounds from Model Diesel Fuel Using Neoteric Green Solvents

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