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Effect of the Chain Length on the Aromatic Ring in the Separation of Aromatic Compounds from Methylcyclohexane Using the Ionic Liquid 1-Ethyl-3-methylpyridinium Ethylsulfate

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Departamento de Ingeniería Química de la Universidad de Vigo, 36310 Vigo, Spain, and Laboratory of Separation and Reaction Engineering, Departamento de Engenharia Quimica, Facultade de Engenharia, Universidade de Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal
* To whom correspondence should be addressed. E-mail: [email protected]. Tel.: +34 986 812 422. Fax: +34 986 812 382.
†Universidad de Vigo.
‡Universidade de Porto.
Cite this: J. Chem. Eng. Data 2010, 55, 6, 2289–2293
Publication Date (Web):February 10, 2010
https://doi.org/10.1021/je900807v
Copyright © 2010 American Chemical Society

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    Abstract

    Liquid−liquid equilibrium (LLE) data for the ternary systems methylcyclohexane + benzene + 1-ethyl-3-methylpyridinium ethylsulfate, methylcyclohexane + toluene + 1-ethyl-3-methylpyridinium ethylsulfate, and methylcyclohexane + ethylbenzene + 1-ethyl-3-methylpyridinium ethylsulfate are reported under atmospheric pressure and at T = 298.15 K. The selectivity, the percent removal of aromatic compound, and the distribution coefficient were calculated from the LLE data, and the influence of the presence of radicals in the benzene ring were analyzed. The reliability of the experimental LLE data was ascertained using the Othmer−Tobias and Hand equations. The nonrandom two-liquid (NRTL) model was used to correlate the experimental data for the ternary systems. A search of the literature has indicated that data for the mixtures presented here have not been reported previously.

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    Othmer−Tobias and Hand equation parameters and experimental and calculated LLE for the ternary systems. This material is available free of charge via the Internet at http://pubs.acs.org.

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