Temperature-dependent parameters and the Peng-Robinson equation of state

Journal Article · Sun Mar 01 04:00:00 EST 1987 · Ind. Eng. Chem. Res.; (United States)

DOI:https://doi.org/10.1021/ie00063a030· OSTI ID:6418110

Xu, Z; Sandler, S I

Parameters obtained from supercritical volume data and subcritical saturated liquid volumes and vapor pressures are reported for nine hydrocarbons, argon, oxygen, nitrogen, carbon monoxide, carbon dioxide, water, and methanol. These new parameters are correlated as a function of reduced temperature in the subcritical and supercritical temperature range and as a cubic-spline function in the near-critical region. Remarkably good predictions are obtained for the volumes and saturated vapor pressures of the pure components studied by using the Peng-Robinson equation with the proposed parameters. The predictions are much better than those obtained with the standard, generalized Peng-Robinson parameters.

• Research Organization: Jiao Tong Univ., Sian
• OSTI ID: 6418110
• Journal Information: Ind. Eng. Chem. Res.; (United States), Journal Name: Ind. Eng. Chem. Res.; (United States) Vol. 26:3; ISSN IECRE
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ALCOHOLS
ARGON
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
ELEMENTS
EQUATIONS
EQUATIONS OF STATE
FLUIDS
FUNCTIONS
GASES
HYDROCARBONS
HYDROGEN COMPOUNDS
HYDROXY COMPOUNDS
LIQUIDS
METHANOL
NITROGEN
NONMETALS
ORGANIC COMPOUNDS
OXIDES
OXYGEN
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
RARE GASES
SATURATION
SPLINE FUNCTIONS
TEMPERATURE DEPENDENCE
TEMPERATURE GRADIENTS
THERMODYNAMIC PROPERTIES
VAPOR PRESSURE
VOLUME
WATER