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Isobaric Vapor–Liquid Equilibria of 1-Butanol–p-Xylene System

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Isobaric vapor–liquid equilibrium data were obtained for 1-butanol–p-xylene system at 97.3 kPa using a vapor recirculating type (modified Othmer’s) equilibrium still. The activity coefficients were obtained by taking into consideration vapor-phase imperfections. The experimental data for this system were tested for thermodynamic consistency and were correlated by various equations. The system forms a minimum boiling azeotrope.

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Abbreviations

A 1, A 2, A 3 :

coefficients of correlations given in Table III

B :

second virial coefficient of pure component,

d 298.15 :

density at 298.15 K

P 0 :

vapor pressure of pure component

P c :

critical pressure, kPa

R :

universal gas constant

RI 298.15 :

refractive index at 298.15 K

T :

temperature, K

T c :

critical temperature, K

T b :

normal boiling temperature of the pure component, K

V c :

critical volume, cm3· mol−1

Δy :

root-mean-square deviation in vapor phase mole fraction

γ:

activity coefficient

μ:

dipole moment, Debye

ω:

Pitzer’s acentric factor

Subscripts:

 

1:

more volatile component

2:

less volatile component

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Authors and Affiliations

  1. Department of Chemical Engineering and Technology, Panjab University, Chandigarh, 160 014, India

    V. K. Rattan, Seema Kapoor & Sukhmehar Singh

Authors
  1. V. K. Rattan
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  2. Seema Kapoor
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  3. Sukhmehar Singh
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Correspondence to Seema Kapoor.

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Rattan, V.K., Kapoor, S. & Singh, S. Isobaric Vapor–Liquid Equilibria of 1-Butanol–p-Xylene System. Int J Thermophys 27, 85–91 (2006). https://doi.org/10.1007/s10765-006-0018-5

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