Measurements and prediction of ternary liquid-liquid equilibria for mixtures of IL + sulfur compound + hexadecane

Omar U. Ahmed, Farouq S. Mjalli, Mohamed K. Hadj-Kali, Talal Al-Wahaibi, Yahya Al-Wahaibi

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

For the practical application of ionic liquids as possible solvents for the removal of thiophenic compounds in the diesel fuel, the liquid-liquid equilibrium (LLE) data of such systems is necessary for the design and optimization of process equipment. In this work, LLE experiments were carried out on four ternary systems consisting of one of two pyrrolidinium or phosphonium-based ionic liquids (IL), one of two sulfur compounds and hexadecane as a representative for diesel fuel. For benzothiophene, the system consisting of the [HMPyrr][TFSI] IL as a solvent possesses the highest solute distribution coefficient (2.754) while a solute distribution coefficient of 3.722 was recorded for dibenzothiophene using the [P4444][MeSO3] as an extraction solvent. The LLE data were fairly correlated with the NRTL model especially at the region of low mole fraction of the sulfur compounds. The data presented in this work can therefore be integrated into process simulators and can be used for preliminary techno-economic evaluation of an ionic liquid-based deep extractive desulfurization of diesel fuel.

Original languageEnglish
Pages (from-to)16-23
Number of pages8
JournalFluid Phase Equilibria
Volume421
DOIs
Publication statusPublished - Aug 15 2016

Fingerprint

Ionic Liquids
Sulfur Compounds
sulfur compounds
Sulfur compounds
Ionic liquids
Liquids
liquids
Diesel fuels
predictions
diesel fuels
Solvent extraction
Ternary systems
Desulfurization
solutes
n-hexadecane
Simulators
solvent extraction
coefficients
ternary systems
Economics

Keywords

  • Benzothiophene
  • Diesel
  • Hexadecane
  • Ionic liquid
  • Liquid equilibria
  • Thiophene

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Physical and Theoretical Chemistry
  • Physics and Astronomy(all)

Cite this

Measurements and prediction of ternary liquid-liquid equilibria for mixtures of IL + sulfur compound + hexadecane. / Ahmed, Omar U.; Mjalli, Farouq S.; Hadj-Kali, Mohamed K.; Al-Wahaibi, Talal; Al-Wahaibi, Yahya.

In: Fluid Phase Equilibria, Vol. 421, 15.08.2016, p. 16-23.

Research output: Contribution to journalArticle

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