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Liquid Extraction of Thiophene from n-Paraffins (C8, C10 or C12) Using Two Ionic Solvents [Mebupy][BF4] or [Emim][CH3SO4]

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Abstract

Desulfurization of gasoline and diesel models is investigated through liquid–liquid extraction of thiophene (C4H4S) from n-paraffin compounds. Ionic solvents of 4-methyl-N-butylpyridinium tetrafluoroborate [mebupy][BF4] or 1-ethyl-3-methylimidazolium methylsulfate [emim][CH3SO4] as selective solvents have been evaluated at 313.15 K and atmospheric pressure of 101.3 kPa. Experimental liquid–liquid equilibrium (LLE) data for the six ternary systems of n-octane, n-decane, or n-dodecane + thiophene + [mebupy][BF4] or [emim][CH3SO4], were used to calculate the values of the thiophene distribution ratio, selectivity and efficiency of ionic solvents. The experimental data were correlated using the UNIQUAC equations, and the binary interaction parameters have been reported. The phase diagrams for the ternary mixtures including both the experimental and calculated tie lines have been presented.

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Acknowledgements

The authors thank the Public Authority for Applied Education and Training (PAAET-TS-06-03) for the financial support of this work.

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Public Authority for Applied Education and Training, (PAAET-TS-06-03)

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Authors and Affiliations

  1. Chemical Engineering Department, College of Technological Studies, PAAET, P.O. Box 42325, Shuwaikh, 70654, State of Kuwait

    Adel S. Al-Jimaz, Khaled H. A. E. Alkhaldi, Abdullah Aljasmi & Mohammad S. AlTuwaim

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  1. Adel S. Al-Jimaz
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  2. Khaled H. A. E. Alkhaldi
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  3. Abdullah Aljasmi
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  4. Mohammad S. AlTuwaim
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AS: wrote the main manuscript text. KH: prepared the figures and tables. AA: made the calculation of model. MS: reviewed the experimental work. All authors reviewed the manuscript

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Correspondence to Adel S. Al-Jimaz.

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Al-Jimaz, A.S., Alkhaldi, K.H.A.E., Aljasmi, A. et al. Liquid Extraction of Thiophene from n-Paraffins (C8, C10 or C12) Using Two Ionic Solvents [Mebupy][BF4] or [Emim][CH3SO4]. J Solution Chem 52, 951–966 (2023). https://doi.org/10.1007/s10953-023-01284-1

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