Isobaric vapor-liquid equilibrium for methanol+benzene+1-octyl-3-methylimidazolium tetrafluoroborate

Qunsheng Li; Wei Zhu; Yongquan Fu; Magtuf Zuhir; Lun Li; Baohua Wang

Korean Journal of Chemical Engineering, Vol.29, No.7, 941-945, July, 2012

DOI10.1007/s11814-011-0262-7 Export Citation

Isobaric vapor-liquid equilibrium for methanol+benzene+1-octyl-3-methylimidazolium tetrafluoroborate

Qunsheng Li, Wei Zhu, Yongquan Fu, Magtuf Zuhir, Lun Li, and Baohua Wang^{1, †}

State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Box 35, Beijing 100029, China
¹College of Chinese Pharmacology, Beijing University of Chinese Medicine and Pharmacology, Beijing 10029, China

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Isobaric vapor-liquid equilibrium (VLE) data for {methanol (1)+benzene (2)+1-octyl-3-methylimidazolium tetrafluoroborate (3)} where 3 is an ionic liquid ([OMIM]+[BF4]-) at atmospheric pressure (101.32 kPa) were measured with a modified Othmer still. The results showed that the ionic liquid studied can transfer the azeotropic point and eliminate the azeotropic phenomena when its concentration is up to x3=0.30. This means that [OMIM]+[BF4]- can be used as a promising entrainer in the application of extractive distillation. The measured ternary data were correlated using the NRTL model.

Keywords:Vapor-liquid Equilibrium;Methanol;Benzene;1-Octyl-3-methylimida-zolium Tetrafluoroborate;Entrainer

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[1] Lei Z, Li C, Chen B, Sep. Purif. Rev., 32, 121 (2003)

[2] Lei Z, Chen B, Ding Z, Special distillation processes, Elsevier, Amsterdam (2005)

[3] Nakashima K, Kubota F, Maruyama T, Goto M, Ind. Eng. Chem. Res., 44(12), 4368 (2005)

[4] Marsh KN, Boxall JA, Lichtenthaler R, Fluid Phase Equilib., 219(1), 93 (2004)

[5] Han XX, Armstrong DW, Acc. Chem. Res., 40, 1079 (2007)

[6] Lei ZG, Chen BH, Li CY, Liu H, Chem. Rev., 108(4), 1419 (2008)

[7] Mandal S, Pangarkar VG, J. Membr. Sci., 201(1-2), 175 (2002)

[8] Natarajan TS, Srinivasan D, J. Chem. Eng. Data., 25, 215 (1980)

[9] Bao J, Zhang Y, Jing X, J. Chem. Eng. Chin. Univ., 19, 258 (2005)

[10] Zeng N, Zhang S, Yao K, J. Pet. Technol., 35, 448 (2006)

[11] Gmehling J, Onken U, Vapor-liquid equilibrium data collection organic hydroxy compounds: Alcohols, DECHEMA, Fankfurt (1977)

[12] Chen ZX, Gu FY, Hu WM, Chemical thermodynamics program, Chemical Industry Press, Beijing (1993)

[13] Lei ZG, Arlt W, Wasserscheid P, Fluid Phase Equilib., 241(1-2), 290 (2006)

[14] Lei ZG, Arlt W, Wasserscheid P, Fluid Phase Equilib., 260(1), 29 (2007)