High-pressure phase equilibrium data for carbon dioxide + dichloromethane + acetone and carbon dioxide + dichloromethane + acetone + N-acetylcysteine (NAC)

2018 ◽  
Vol 473 ◽  
pp. 132-137 ◽  
Author(s):  
Evertan A. Rebelatto ◽  
Gean Pablo S. Aguiar ◽  
Angelo L. Piato ◽  
João P. Bender ◽  
Marcelo Lanza ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
High Pressure ◽  
Phase Equilibrium ◽  
High Pressure Phase ◽  
Phase Equilibrium Data ◽  
Equilibrium Data ◽  
Pressure Phase

High-Pressure Phase Equilibrium Studies of Multicomponent (Alcohol-Water-Ionic Liquid-CO2) Systems

2020 ◽  
Vol 6 (1) ◽  
pp. 9
Author(s):  
Małgorzata E. Zakrzewska ◽  
Ana B. Paninho ◽  
M. Fátima C. Guedes da Silva ◽  
Ana V. M. Nunes
Keyword(s):  
High Pressure ◽  
Ionic Liquid ◽  
Phase Equilibrium ◽  
Process Intensification ◽  
High Pressure Phase ◽  
Equilibrium Studies ◽  
Water Separation ◽  
Alcohol Water ◽  
Product Separation ◽  
Pressure Phase

Selective water (by-product) separation from reaction mixtures stands as an important process intensification strategy for equilibrium-limited reactions. In this work, the possibility of using a high-pressure biphasic reaction media composed of a hydrophobic ionic liquid, 1-hexy-3-methylimidazolium tetracyanoborate, and carbon dioxide was explored for levulinic acid production from 1,4-butanediol. Vapour-liquid equilibrium measurements were performed for the binary (diol+CO2), ternary (diol+CO2+IL), and quaternary systems (diol+CO2+IL+water), at 313.2 K and pressures up to 18 MPa. The static analytical method was used in a high-pressure phase equilibrium apparatus equipped with a visual sapphire cell. The capability of the quaternary system to perform physical water separation is discussed in this paper.

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