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Received July 6, 2017
Accepted September 5, 2017
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Usage of a deep eutectic solvent based on three compounds for toluene separation
Department of Biological and Chemical Engineering, Hongik University, Sejong 30016, Korea
Korean Journal of Chemical Engineering, January 2018, 35(1), 210-213(4), 10.1007/s11814-017-0244-5
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Abstract
The separation of toluene from a mixture composed of toluene and heptane was carried out in the presence of a deep eutectic solvent (DES). The DES used in this study was synthesized using choline chloride, urea and glycerol with mole ratio of 1 : 2 : 1. The liquid-liquid equilibria (LLE) of the ternary system of toluene, heptane, and DES were determined at atmospheric pressure and three temperatures of 298.2-313.2 K with an interval of 10 K. The distribution coefficients and selectivities of toluene were reported. Only a small amount of heptane was detected in the extract phase, resulting in high value of selectivity. The experimental LLE data were reasonably well correlated using non-random two-liquid (NRTL) model. The ab initio results revealed that the interactions between the DES and toluene are stronger than those between DES and heptane, which may be a reasonable explanation for the high value of selectivity in this ternary system.
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References
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Rodriguez NR, Gerlach T, Scheepers D, Kroon MC, Smirnova I, J. Chem. Thermodyn., 104, 128 (2017)
Choi CW, Stolte S, Yun YS, Scientific Reports, 6, 33403 (2016)
Abbott AP, Capper G, Davies DL, Rasheed RK, Tambyrajah V, Chem. Commun., 70 (2003).
Muhammad N, Hossain MI, Man Z, El-Harbawi M, Bustam MA, Noaman YA, Alitheen NBM, Ng MK, Hefter G, Yin CY, J. Chem. Eng. Data, 57(8), 2191 (2012)
Tang W, Liu L, Li G, Zhu T, Row KH, Korean J. Chem. Eng., 34(3), 814 (2017)
Alonso DA, Baeze A, Chinchilla R, Guillena G, Pastor IM, Ramon DJ, Eur. J. Org. Chem., 612 (2016).
Abo-Hamad A, Hayyan M, AlSaadi MA, Hashim MA, Chem. Eng. J., 273, 551 (2015)
Naik PK, Dehury P, Paul S, Banerjee T, Fluid Phase Equilib., 423, 146 (2016)
Rodriguez NR, Requejo PF, Kroon MC, Ind. Eng. Chem. Res., 54(45), 11404 (2015)
Jiao Tiantian, Wang Hongyan, Dai Fei, Li Chunshan, Zhang Suojiang, Ind. Eng. Chem. Res., 55(32), 8848 (2016)
Garcia G, Atilhan M, Aparicio S, Chem. Phys. Lett., 634, 151 (2015)
Qasim F, Choi HC, Shin JS, Park SJ, Korean J. Chem. Eng., 33(7), 2179 (2016)
Renon H, Prausnitz JM, AIChE J., 14, 135 (1968)
Gaussian 09W, Frisch MJ, Trucks GW, Schlegel HB, Scuseria GE, Robb MA, et al., Gaussian, Inc., Wallingford CT, 2013.
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Boys SF, Bernardi F, Mol. Phys., 19, 533 (1970)
Sun H, Li Y, Wu X, Li G, J. Mol. Model., 19, 2433 (2013)
