ABSTRACT

Solubilities of SO2 in binary mixtures of urea and ethylene glycol were determined by gas liquid equilibrium experiments at the temperatures from (298.15 to 318.15 K) and 122.7 kPa, with SO2 partial pressure in gas phase in the range of (0 to 130) Pa. Henry s law constants were calculated based on the solubility data. It indicated that the mixture with urea molality of 6.65 mol*kg 1 has the most desirable capacity. More than 90 % SO2 can be regenerated by bubbling N2 at 338.15 K. Density and viscosity data for the binary mixtures were also measured. In addition, UV, IR, and NMR experiments were conducted to investigate the interaction between ethylene glycol, urea, and SO2. The result demonstrated that SO2 can interact with the mixture by both the charge-transfer interaction between S (SO2)***N (urea) and the hydrogen bond between O (SO2)***H (ethylene glycol).

Compounds

#	Formula	Name
1	O2S	sulfur dioxide
2	CH4N2O	urea
3	C2H6O2	1,2-ethanediol

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	3	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Pycnometric method	5
POMD	3	Viscosity, Pa*s ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Capillary tube (Ostwald; Ubbelohde) method	5
POMD	2 3 1	Molality, mol/kg - 1 ; Liquid	Solvent: Molality, mol/kg - 2; Liquid Pressure, kPa; Liquid	Temperature, K; Liquid	Liquid Gas	titration	44
POMD	2 3 1	Molality, mol/kg - 1 ; Liquid	Temperature, K; Liquid Pressure, kPa; Gas	Solvent: Molality, mol/kg - 2; Liquid	Liquid Gas	titration	24
POMD	2 3 1	Molality, mol/kg - 1 ; Liquid	Pressure, kPa - 1; Gas	Temperature, K; Liquid Solvent: Molality, mol/kg - 2; Liquid	Liquid Gas	titration	20
POMD	2 3	Mass density, kg/m3 ; Liquid	Molality, mol/kg - 2; Liquid Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Pycnometric method	35
POMD	2 3	Viscosity, Pa*s ; Liquid	Molality, mol/kg - 2; Liquid Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Capillary tube (Ostwald; Ubbelohde) method	35

Thermodynamics Research Center / ThermoML | Journal of Chemical and Engineering Data

Solubility Properties and Spectral Characterization of Dilute SO2 in Binary Mixtures of Urea + Ethylene Glycol

Sun, S.[Shaoyang], Niu, Y.[Yanxia], Gao, F.[Fei], Shen, J.[Jun], Wei, X.[Xionghui]

ABSTRACT