Liquid–Liquid Equilibrium of the Quaternary Systems n-Octane or Decane + Toluene + Dimethyl Sulfoxide + Methanol or Ethanol at 298.15 K: Experimental Data and Correlation

Farghi, Fadoua; Kaddami, Mohammed

doi:10.1007/s10953-018-0776-2

Cited by 4 publications

(2 citation statements)

References 29 publications

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“…Any compound that possesses the value of σ > +σ hb or σ < −σ hb acts as HBA and HBD, whereas peaks between these values interact via E misfit or E Vdw . 36 The σ potential describes the affinity of compounds toward each other. A more negative value of μ(σ) is desired as it indicates a higher interaction between components in the mixture.…”

Section: Resultsmentioning

confidence: 99%

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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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Section: Resultsmentioning

confidence: 99%

“…The vertical lines shown in Figures and are the threshold values of the hydrogen-bond interaction. Any compound that possesses the value of σ > +σ hb or σ < −σ hb acts as HBA and HBD, whereas peaks between these values interact via E misfit or E Vdw . The σ potential describes the affinity of compounds toward each other.…”

Section: Resultsmentioning

confidence: 99%