VAPOR-LIQUID-EQUILIBRIA OF SOME HYDROGEN PLUS HYDROCARBON SYSTEMS WITH THE WONG-SANDLER MIXING RULE

1994-05-10
HUANG, H
SANDLER, SI
ORBEY, H
Owing to the highly supercritical nature of hydrogen in hydrogen-hydrocarbon systems, it is difficult to accurately predict, or even correlate, the phase behavior of such mixtures with cubic equations of state and conventional mixing rules, especially as the critical point of the mixture is approached. Here we show that an extended Peng-Robinson equation of state and the recently introduced Wong-Sandler mixing rule can correlate these systems successfully, and more importantly that the mixing rule parameters can be generalized in terms of temperature and acentric factor of the hydrocarbon so that quite acceptable extrapolations and predictions are possible.
FLUID PHASE EQUILIBRIA

Suggestions

VAPOR-LIQUID-EQUILIBRIUM OF POLYMER-SOLUTIONS USING A CUBIC EQUATION OF STATE
ORBEY, N; SANDLER, SI (1994-07-01)
A recently proposed mixing rule has been combined with a cubic equation of state to correlate the vapor-liquid equilibria of various polymer + solvent and solvent + long chain hydrocarbon mixtures. We find that the two-parameter version of this model can correlate the solvent partial pressure in concentrated polymer solutions with high accuracy over a range of temperatures and pressures with temperature-independent parameters. For the solvent + long chain hydrocarbon systems, for which accurate vapor-phase ...
Temperature effects on the structural and optical properties of the TlInSe2xS2(1-x) mixed crystals (x=0.3)
Omar, A.; Qasrawi, A. F.; Hasanlı, Nızamı (2017-11-15)
In this work, we have studied the temperature effects on the recrystallization process and on the energy band gap of the TlInSe(2)xS(2(1 - x)) mixed crystals at the critical composition (x = 0.3) where structural phase transition from tetragonal to monoclinic takes place. Remarkable effect which included permanent recrystallization process, enlargements in the monoclinic crystallite size, decreases in the compressing strain and in the dislocation density as well as in the stacking faults and in the energy b...
Liquid-(Solid plus Liquid) Transitions in a Two-Component System of (CH3)CCl3 + CCl4
Yurtseven, Hasan Hamit (2020-02-01)
Liquid-(solid + liquid) transitions are studied in (CH3)CCl3 + CCl4 by using the Landau phenomelogical model. The Gibbs energy is expanded in terms of the orientational disorder (OD) parameters for the transitions of the liquid-(rhombohedral + liquid) and liquid-(face-centered cubic + liquid) in a two component system of (CH3)CCl3 + CCl4. From the Gibbs energy, the phase line equations are derived for the transitions studied and they are fitted to the observed T-X phase diagram of (CH3)CCl3 + CCl4 for the c...
lambda-transition of NH4Cl and ND4Cl at high pressures
Yurtseven, Hasan Hamit; Sen, S. (Wiley, 2007-07-01)
We predict in this study using the mean-field theory, the phase-line equation from the free energy expanded in terms of the order parameters of solid II and III phases of NH4Cl and ND4Cl close to the X-phase transitions at high pressures. Using the temperature and pressure dependence of the coefficients given in the phase-line equation, it is shown that the experimentally observed T-P phase diagram for the solid II-solid III transition, can be predicted from the mean field model studied here for both crysta...
Formation of trace byproducts in the premixed flames of CH3Cl/C2H4
Huang, JW; Onal, I; Senkan, SM (1997-05-01)
The chemical structure of an atmospheric pressure, fuel-rich (equivalence ratio 3.06), flat flame of a chloromethane and ethylene (CH3Cl/C2H4 = 1.99) has been studied experimentally using both heated microprobe and cold trap sampling techniques followed by high-resolution gas chromatography/mass spectrometry (GC/MS). The identities and absolute concentrations of more than 50 major and minor hydrocarbon and chlorinated hydrocarbon species have been established, including a large number of aromatics, substitu...
Citation Formats
H. HUANG, S. SANDLER, and H. ORBEY, “VAPOR-LIQUID-EQUILIBRIA OF SOME HYDROGEN PLUS HYDROCARBON SYSTEMS WITH THE WONG-SANDLER MIXING RULE,” FLUID PHASE EQUILIBRIA, pp. 143–153, 1994, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/66332.