ABSTRACT

The diffusion coefficients of benzonitrile in the CO2-expanded ethanol at the temperatures of (303, 313, and 323) K and the pressures ranging from (1.49 to 9.79) MPa were measured by the chromatographic peak broadening technique. The benzonitrile diffusion coefficients in the CO2-expanded ethanol were observed to increase with increasing CO2 mole fraction in ethanol. For a fixed CO2 mole fraction in ethanol, the benzonitrile diffusion coefficients were found to increase with increasing temperature at a fixed pressure and to decrease with increasing pressure at a fixed temperature. The measured diffusion coefficients could be correlated well by the modified Wilke-Chang equation with an average absolute deviation of 5.1 %.

Compounds

#	Formula	Name
1	C7H5N	benzonitrile
2	CO2	carbon dioxide
3	C2H6O	ethanol
4	C6H6	benzene
5	C7H8	toluene
6	C10H8	naphthalene

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 1 2	Tracer diffusion coefficient, m2/s - 1 ; Liquid	Temperature, K; Liquid Solvent: Mole fraction - 2; Liquid Pressure, kPa; Liquid	Mole fraction - 1; Liquid	Liquid	chromatographic peak broadening method	69
POMD	3 4	Tracer diffusion coefficient, m2/s - 4 ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid Mole fraction - 4; Liquid		Liquid	chromatographic peak broadening method	1
POMD	3 5	Tracer diffusion coefficient, m2/s - 5 ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid Mole fraction - 5; Liquid		Liquid	chromatographic peak broadening method	1
POMD	3 6	Tracer diffusion coefficient, m2/s - 6 ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid Mole fraction - 6; Liquid		Liquid	chromatographic peak broadening method	1
POMD	3 1	Tracer diffusion coefficient, m2/s - 1 ; Liquid	Pressure, kPa; Liquid Temperature, K; Liquid	Mole fraction - 1; Liquid	Liquid	chromatographic peak broadening method	10

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

Diffusion of Benzonitrile in CO2-Expanded Ethanol

lin, I.-h.[I-hsiang], Tan, C. -S.[Chung-Sung]

ABSTRACT