ABSTRACT

Pressure-composition isotherms for binary mixtures of carbon dioxide (CO2) + N-vinyl caprolactam (NVCL) and carbon dioxide (CO2) + N-methyl caprolactam (NMCL) were measured using a variable volume view cell at temperature from (323.15 to 353.15) K and pressure up to about 21 MPa. Phase behavior of these binary experimental data were correlated with Peng-Robinson equation of state using a van der Waals one-fluid mixing rule including two adjustable parameters. Critical constants were estimated with the Joback method, and the acentric factor was estimated with the Lee-Kesler method.

Compounds

#	Formula	Name
1	CO2	carbon dioxide
2	C8H13NO	N-vinyl caprolactam
3	C7H13NO	1-methylazacycloheptan-2-one

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 3	Vapor or sublimation pressure, kPa ; Gas	Temperature, K; Gas Mole fraction - 1; Gas	Gas Liquid	CCELL:UFactor:24	8
POMD	1 3	Vapor or sublimation pressure, kPa ; Liquid	Temperature, K; Liquid Mole fraction - 1; Liquid	Liquid Gas	CCELL:UFactor:24	52
POMD	1 2	Critical pressure, kPa ; Liquid	Mole fraction - 1; Liquid	Liquid Gas	Direct measurement	3
POMD	1 2	Critical temperature, K ; Liquid	Pressure, kPa; Liquid	Liquid Gas	Visual observation in a stirred cell	3
POMD	1 2	Vapor or sublimation pressure, kPa ; Liquid	Temperature, K; Liquid Mole fraction - 1; Liquid	Liquid Gas	CCELL:UFactor:24	40
POMD	1 2	Vapor or sublimation pressure, kPa ; Gas	Temperature, K; Gas Mole fraction - 1; Gas	Gas Liquid	CCELL:UFactor:24	7

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

High-Pressure Phase Behavior of CO2 + N-Vinyl Caprolactam and CO2 + N-Methyl Caprolactam Systems

Kwon, S.[Soyoung], Bae, W.[Won], Kim, H.[Hwayong]

ABSTRACT