Removal of aromatic hydrocarbons from hydrocarbon mixture using glycols at 303.15 K and 333.15 K and atmospheric pressure: Experimental and calculated data by NRTL and UNIQUAC models

Mesquita, Francisca Maria Rodrigues; Pinheiro, Regiane Silva; Sant’Ana, Hosiberto Batista de; Santiago-Aguiar, Rílvia Saraiva de

doi:10.1016/j.fluid.2014.12.027

Cited by 10 publications

(2 citation statements)

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“…The main solvents reported in the literature for aliphatic–aromatic liquid–liquid extraction, which have also been used in industrial separations, are sulfolane − and glycols, ,,− but many compounds have been tested for application in aliphatic–aromatic separations, including dimethyl sulfoxide, , ethylene and propylene carbonate, ,,− N -methylpyrrolidone, − N -formylmorpholine, ,,− and dimethylformamide, among others. The ternary aliphatic + aromatic + solvent systems, with compositional analysis, distribution factors, and selectivities, are detailed in each study, which is useful for performance comparisons among different compound combinations.…”

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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“…Various solvents, such as ethers, amines, alcohols, and other organic compounds have been used in the petroleum and chemical industries. The selection of suitable solvent in separation processes is a key to improve current industrial processes. − To extract aromatics from aliphatics in mixtures with 20–65 wt % aromatic content, liquid–liquid extraction is widely used. − …”

Section: Introductionmentioning

confidence: 99%

Separation of Alkylbenzenes from n-Heptane Using Binary Mixtures of Ionic Solvents

et al. 2019

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A study of liquid–liquid extraction of alkylbenzenes (propylbenzene, butylbenzene, or p-xylene) from n-heptane using ionic solvent binary mixture of 1-octyl-3-methylimidazolium hexafluorophosphate [C8C1im][PF6] and 1-ethyl-3-methylimidazolium methylsulfate [C2C1im][CH3SO4] is conducted at 313.2 K and a pressure of 101.3 kPa. The distribution ratio and selectivity for systems under study were calculated and compared to systems including other solvents such as sulfolane and other ionic liquids. The use of the present binary mixture of ILs provided a higher mole-based distribution ratio than the use of sulfolane, a pure IL, and a mixture of other ILs. On the other hand, the use of [C8C1im][PF6] and [C2C1im][CH3SO4] mixture contributed to a mass-based distribution ratio comparable to that of sulfolane and a higher distribution ratio than the others involving ILs and led to a higher selectivity than all the other solvents including sulfolane. Hence the extractive properties of [C8C1im][PF6] and [C2C1im][CH3SO4] mixture revealed a potential substitute for other solvents. Furthermore, the nonrandom two-liquid model was utilized to assess the data.

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Extraction Separation of Aromatics

2023

Industrial Arene Chemistry

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Removal of aromatic hydrocarbons from hydrocarbon mixture using glycols at 303.15 K and 333.15 K and atmospheric pressure: Experimental and calculated data by NRTL and UNIQUAC models

Cited by 10 publications

References 49 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

Separation of Alkylbenzenes from n-Heptane Using Binary Mixtures of Ionic Solvents

Extraction Separation of Aromatics

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