ABSTRACT

Extraction followed by heteroazeotropic distillation is considered to be a potentially energy-saving method for purifying acrylic acid. Based on our previous work, cyclopentyl methyl ether is an excellent solvent that can be used as extractive an agent as well as an entrainer. In this work, liquid liquid equilibria (LLE) data of the quaternary system {water (1) + acrylic acid (2) + acetic acid (3) + cyclopentyl methyl ether (4)} were determined at T = (293.15, 303.15, and 313.15) K and p = 100.25 kPa. The reliability of the experimental data was evaluated using the Othmer-Tobias and Hand equations. The NRLT and UNIQUAC activity coef fi cient models were used to correlate the LLE data of the quaternary system. The UNIFAC-Dortmund model was used to predict the observed LLE data with a average root-mean-square deviation value of 3.41%. Additionally, the physical properties and extraction capabilities of cyclopentyl methyl ether, cyclohexane, and toluene were compared.

Compounds

#	Formula	Name
1	H2O	water
2	C6H12O	methoxycyclopentane

Datasets

The table above is generated from the ThermoML associated json file (link above). POMD and RXND refer to PureOrMixture and Reaction Datasets. The compound numbers are included in properties, variables, and phases, if specificied; the numbers refer to the table of compounds on the left.
Type	Compound-#	Property	Variable	Constraint	Phase	Method	#Points
POMD	2 1	Mass fraction - 1 ; Liquid mixture 1	Temperature, K; Liquid mixture 1	Pressure, kPa; Liquid mixture 1	Liquid mixture 1 Liquid mixture 2	Chromatography	3
POMD	2 1	Mass fraction - 1 ; Liquid mixture 2	Temperature, K; Liquid mixture 1	Pressure, kPa; Liquid mixture 1	Liquid mixture 2 Liquid mixture 1	Chromatography	3

Thermodynamics Research Center / ThermoML | Fluid Phase Equilibria

Liquid-liquid phase equilibria of the quaternary system {water (1) + acrylic acid (2) + acetic acid (3) + cyclopentyl methyl ether (4)}: Measurement, correlation, and comparative study

Zhang, H.[Hongxun]

ABSTRACT