Description of vapor—liquid equilibrium of the HCl/ H2O system using an activity-coefficient model

1991 ◽  
Vol 63 (1-2) ◽  
pp. 49-63 ◽  
Author(s):  
Yunda Liu ◽  
Urban Grén
Keyword(s):  
Activity Coefficient ◽  
Liquid Equilibrium ◽  
Vapor Liquid Equilibrium ◽  
Activity Coefficient Model ◽  
Vapor Liquid

scholarly journals Measurement and Correlation of Isobaric Vapor-Liquid Equilibrium Data for Water + 2-Azido-N,N-Dimethylethanamine System at 4 kPa

2021 ◽  
Vol 15 (2) ◽  
pp. 226-232
Author(s):  
Hosein Rouhandeh ◽  
◽  
Shahram Ghanbari Pakdehi ◽  
Keyword(s):  
Standard Deviation ◽  
Activity Coefficient ◽  
Liquid Equilibrium ◽  
Absolute Deviation ◽  
Vapor Liquid Equilibrium ◽  
Azeotropic Point ◽  
Activity Coefficient Model ◽  
Equilibrium Data ◽  
Vle Data ◽  
Vapor Liquid

Isobaric vapor-liquid equilibrium (VLE) data for binary system of water + 2-azido-N,N-dimethylethanamine (DMAZ) was measured at 4 kPa. The results showed an azeotropic point at x1 = 0.985 and T = 302.17 K. The data was correlated with nonrandom two-liquid (NRTL), Wilson and universal quasi-chemical activity coefficient (UNIQUAC) models for the liquid phase. A comparison of the model performances was made using of the criterion of the average absolute deviation, standard deviation and mean standard deviation in boiling-point temperature. The results indicated that the NRTL activity coefficient model satisfactorily correlated the VLE data.

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