ABSTRACT

Isothermal vapor liquid equilibrium (VLE) for thiophene + 2,2,4-trimethylpentane were measured at 343.15 and 353.15K and thiophene + 2- ethoxy-2-methylpropane were measured at 333.15 and 343.15K with a circulation still. Maximum pressure azeotropes were found in thiophene + 2,2,4-trimethylpentane systems, whereas thiophene + 2-ethoxy-2-methylpropane systems exhibit slight positive deviation from ideality. No azeotropic behavior was found in thiophene + 2-ethoxy-2-methylpropane systems. The experimental results were correlated with the Wilson model and also compared with the original UNIFAC, UNIFAC-Dortmund, and the COSMO-RS predictive models. Analyses of liquid and vapor phase composition were determined with gas chromatography. All VLE measurements passed the used thermodynamic consistency tests (integral, infinite dilution and point test).

Compounds

#	Formula	Name
1	C4H4S	thiophene
2	C8H18	2,2,4-trimethylpentane
3	C6H14O	2-ethoxy-2-methylpropane
4	C7H8	toluene

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	Phase	Method	#Points
POMD	1	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Standard Abbe refractometry	1
POMD	2	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Standard Abbe refractometry	1
POMD	3	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Standard Abbe refractometry	1
POMD	4	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Standard Abbe refractometry	1
POMD	1 2	Vapor or sublimation pressure, kPa ; Liquid	Mole fraction - 1; Liquid Temperature, K; Liquid	Liquid Gas	Closed cell (Static) method	37
POMD	1 2	Mole fraction - 1 ; Gas	Mole fraction - 1; Liquid Temperature, K; Gas	Gas Liquid	Chromatography	37
POMD	1 3	Vapor or sublimation pressure, kPa ; Liquid	Mole fraction - 1; Liquid Temperature, K; Liquid	Liquid Gas	Closed cell (Static) method	35
POMD	1 3	Mole fraction - 1 ; Gas	Mole fraction - 1; Liquid Temperature, K; Gas	Gas Liquid	Chromatography	35

Thermodynamics Research Center / ThermoML | Fluid Phase Equilibria

Vapor liquid equilibrium for binary system of thiophene + 2,2,4-trimethylpentane at 343.15 and 353.15K and thiophene + 2-ethoxy-2-methylpropane at 333.15 and 343.15K

Sapei, E.[Erlin], Zaytseva, A.[Anna], Uusi-Kyyny, P.[Petri], Keskinen, K. I.[Kari I.], Aittamaa, J.[Juhani]

ABSTRACT