Experimental Solid + Liquid Equilibria and Excess Molar Volume of Alkanol + Octylamine Mixtures. Analysis in Terms of ERAS, DISQUAC, and Modified UNIFAC†

2004 ◽  
Vol 49 (1) ◽  
pp. 101-108 ◽  
Author(s):  
Urszula Domańska ◽  
Małgorzata Głoskowska
Keyword(s):  
Molar Volume ◽  
Excess Molar Volume ◽  
Solid Liquid

scholarly journals Determination of density and excess molar volume of dimethyl sulfoxide + 1-allyl-3-methylimidazolium chloride mixtures at high pressure

2017 ◽  
Vol 130 ◽  
pp. 76-83 ◽  
Author(s):  
Laura de Pablo Nisa ◽  
José J. Segovia ◽  
Ángel Martín ◽  
M. Carmen Martín ◽  
M. Dolores Bermejo
Keyword(s):  
High Pressure ◽  
Dimethyl Sulfoxide ◽  
Molar Volume ◽  
Excess Molar Volume

scholarly journals A Study on the density and excess molar volume of the mixture formed by 2-amino-2-methyl-1-propanol, diethanolamine, and water

2020 ◽  
Vol 66 (4 Jul-Aug) ◽  
pp. 504
Author(s):  
L. F. Ramirez-Verduzco
Keyword(s):  
Molar Volume ◽  
Excess Molar Volume ◽  
Ternary Mixture ◽  
Mixing Rule ◽  
Average Absolute Deviation ◽  
Absolute Deviation ◽  
Entire Concentration Range ◽  
Petroleum Refineries ◽  
And Control ◽  
Correct Design

Aqueous alkanolamines solutions are widely used in petroleum refineries to remove acid gases from hydrotreated streams. The knowledge of physical properties in this kind of solutions is useful for the correct design, operation, and control of sweetening processes. Due to the above, we carried out a study on the density of the ternary mixture: 2-Amino-2-Methyl-1-Propanol (AMP) + Diethanolamine (DEA) + Water (H2O). Density was measured by means of the vibrating tube method with an uncertainty of 2×10-4 g·cm-3.  The experimental data was obtained in the entire concentration range, temperatures from 303.15 to 333.15 K, and pressure of 101.3 kPa. In addition, the following three prediction methods were tested to estimate the density of the blend: mixing rule, polynomial correlation, and excess molar volume. The best prediction was obtained by means of the excess molar volume through the Redlich-Kister and Cibulka equations, where an average absolute deviation (AAD) of 0.02%, correlation coefficient (R) of 0.9999, and standard deviation (<s>) of 3×10-4 g·cm-3 were obtained.

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