Phase Behavior of the Hydrogen-Propane System

Burriss, W. L.; Hsu, N. T.; Reamer, H. H.; Sage, B. H.

doi:10.1021/ie50517a060

Cited by 53 publications

(19 citation statements)

References 6 publications

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“…The exact shape will depend on the specific ionic liquid involved, but we expect that it may behave similar to branches 3 or 4 with the critical locus running to infinitely high pressures, but more probably somewhere in the middle with a near-vertical slope. Experimental evidence of binary systems of hydrogen with normal alkanes [18][19][20] and with methanol 21 has branch 3-type behavior as shown in Figure 5. This figure is plotted as reduced temperature and pressure so that the different solvents with differing critical properties can be easily compared at one point representing all their critical points.…”

Section: Thermodynamic Explanation Of Temperature Dependencymentioning

confidence: 99%

Understanding temperature dependency of hydrogen solubility in ionic liquids, including experimental data in [bmim][Tf₂N]

Raeissi

Peters

2012

AIChE Journal

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Previously unavailable high‐pressure solubility data of hydrogen in 1‐butyl‐3‐methylimidazolium bis(trifluoromethylsulfonyl)amide has been measured experimentally up to temperatures and pressures of 450 K and 15 MPa, respectively. In contrast to CO2 solubility, H2 tends to dissolve better in the ionic liquid at higher temperatures. This “inverse” temperature effect has been studied from a thermodynamic perspective and the underlying reason for this effect is explained. It is shown that the negative P‐T slope is not limited to this particular binary mixture, but is the typical behavior in most, if not all, H2 + ionic liquid systems. However, there is a certain range of temperatures, pressures, and concentrations in which this phenomenon occurs. By predicting the Scott‐van Konynenburg phase diagram for systems of H2 + ionic liquids to be of type III, it is shown how and why the solubility increases with temperature in some regions, but decreases in others. © 2012 American Institute of Chemical Engineers AIChE J, 2012

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Section: Thermodynamic Explanation Of Temperature Dependencymentioning

confidence: 99%

Understanding temperature dependency of hydrogen solubility in ionic liquids, including experimental data in [bmim][Tf₂N]

Raeissi

Peters

2012

AIChE Journal

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“…The phase behavior of the hydrogen-propane system has been investigated (2) and the solubility of hydrogen has been determined in a number of hydrocarbons (4,5 ) , but these limited data do not permit a general correlation of the effect of the characteristics of the hydrocarbon coniponents upon the phase behavior of such systems or of the partial volume (7) of hydrogen in hydrocarbon liquids.…”

mentioning

confidence: 99%

Volumetric and phase behavior in the hydrogen–n‐hexane system

1957

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In spite of the importance of hydrogenation procesing operations in the refining of petroleum there are only limited experimental volumetric and phase equilibrium data concerning mixtures of hydrocarbons and hydrogen. An investigation of the volumetiric and phase behavior of the hydrogen–n‐hexane system was therefore undertaken. The experimental study involved measurements of the specific volume of four mixtures of hydrogen and n‐hexane at eight temperatures between 40° and 460°F. for pressures up to 10,000 lb./sq. in In addition, the composition of the gas phase in heterogeneous mixtures was determined at six temperatures within the interval mentioned above for pressures as high as 10,000 lb./sq. in. Little about this system was found to be qualitatively unusual except that the critical pressure exceeded 10,000 lb/sq. in. at all temperatures below 340°F. As would be expected, the dew‐point gas was rather lean in n‐hexane for temperatures below 220°F. and at pressures above 100 times the vapor pressure of n‐hexane throughout the pressure range covered by this study.

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“…Tsang et al (14) , Critical curve calculated from the present EOS Heintz and Streett (15) , Heintz and Streett (15) , Heintz and Streett (15) , Burriss et al (16) , Burriss et al (16) , Burriss et al (16) , Tsang and Streett (17) Tsang and Streett (17) Tsang and Streett (17) Dew-and bubble-point curve calculated from the present EOS …”

Section: Determination Of the Mixing Parameter Of The Pr Eosmentioning

confidence: 89%

Thermodynamic Behavior of Hydrogen Binary Systems with Critical Curve Divergence and Retrograde Condensation

Sakoda

Kohno

Takata

2013

JTST

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In binary systems of hydrogen and hydrocarbons, the fluid-phase thermodynamic behavior is unique in having the divergence of the critical curves to a high pressure region. The thermodynamic properties of the binary systems including hydrogen with methane, ethane, propane, and carbon dioxide were calculated from a Peng-Robinson equation of state (PR EOS). The mixing parameter of the present EOS has a functional form of temperature generalized by the critical temperatures of the hydrocarbons and carbon dioxide. Based on the corresponding states principle, the coefficients of the parameter were determined with a non-linear least squares fitting to the experimental critical points of the mixtures. The developed PR EOS shows good agreement with the experimental data of not only the critical points but also the phase equilibria. In the hydrogen binary systems, retrograde condensation is expected. The volumetric and enthalpy changes in this process were simulated for a hydrogen + carbon dioxide mixture of 0.55 mole fraction using the PR EOS at 270 K.

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Phase Behavior of the Hydrogen-Propane System

Cited by 53 publications

References 6 publications

Understanding temperature dependency of hydrogen solubility in ionic liquids, including experimental data in [bmim][Tf₂N]

Understanding temperature dependency of hydrogen solubility in ionic liquids, including experimental data in [bmim][Tf₂N]

Volumetric and phase behavior in the hydrogen–n‐hexane system

Thermodynamic Behavior of Hydrogen Binary Systems with Critical Curve Divergence and Retrograde Condensation

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Phase Behavior of the Hydrogen-Propane System

Cited by 53 publications

References 6 publications

Understanding temperature dependency of hydrogen solubility in ionic liquids, including experimental data in [bmim][Tf2N]

Understanding temperature dependency of hydrogen solubility in ionic liquids, including experimental data in [bmim][Tf2N]

Volumetric and phase behavior in the hydrogen–n‐hexane system

Thermodynamic Behavior of Hydrogen Binary Systems with Critical Curve Divergence and Retrograde Condensation

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Product

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Understanding temperature dependency of hydrogen solubility in ionic liquids, including experimental data in [bmim][Tf₂N]

Understanding temperature dependency of hydrogen solubility in ionic liquids, including experimental data in [bmim][Tf₂N]