Experimental determination of the critical line for (carbon dioxide + ethane) and calculation of various thermodynamic properties for (carbon dioxide +n-alkane) using the PSRK model

Horstmann, Sven; Fischer, Kai; Gmehling, Jürgen; Kolář, Petr

doi:10.1006/jcht.2000.0611

Cited by 62 publications

(46 citation statements)

References 32 publications

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“…Binary mixtures of CO 2 with n-alkanes belong to three different types in the well known classification by van Konynenburg and Scott [11]. In this scheme, the systems CO 2 + (C 2 to C 4 ) are Type I (Horstmann et al [12]), CO 2 + n-C 8 and CO 2 + n-C 10 are Type II (Horstmann et al [12] and Schneider [13,14]), and CO 2 + n-C 16 (Horstmann et al. [12] and Schneider [15]) is Type III.…”

Section: Introductionmentioning

confidence: 97%

“…In this scheme, the systems CO 2 + (C 2 to C 4 ) are Type I (Horstmann et al [12]), CO 2 + n-C 8 and CO 2 + n-C 10 are Type II (Horstmann et al [12] and Schneider [13,14]), and CO 2 + n-C 16 (Horstmann et al. [12] and Schneider [15]) is Type III. This illustrates the possible complexity that can be observed experimentally for binary mixtures of this class.…”

Section: Introductionmentioning

confidence: 99%

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Isochoric Heat Capacity of CO2 + n-Decane Mixtures in the Critical Region

et al. 2006

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The isochoric heat capacity of two binary (CO 2 + n-decane) mixtures (0.095 and 0.178 mole fraction of n-decane) have been measured with a hightemperature, high-pressure, nearly constant volume adiabatic calorimeter. Measurements were made at nineteen near-critical liquid and vapor densities between 87 and 658 kg · m −3 for the composition of 0.095 mole fraction n-decane and at nine densities between 83 and 458 kg · m −3 for the composition of 0.178 mole fraction n-decane. The range of temperatures was 295 to 568 K. These temperature and density ranges include near-and supercritical regions. The measurements were performed in both one-and two-phase regions including the vapor + liquid coexistence curve. The uncertainty of the heat-capacity measurements is estimated to be 2% (coverage factor k = 2). The uncertainty in temperature is 15 mK, and that for density measurements is 0.06%. The liquid and vapor one-(C V 1 , C V 1 ) and two-phase (C V 2 , C V 2 ) isochoric heat capacities, temperatures (T S ), and densities (ρ S ) at saturation were measured by using the well-established method of quasi-static thermograms for each filling density. The critical temperatures (T C ), the critical densities (ρ C ), and the critical pressure (P C ) for the CO 2 + n-decane mixtures were extracted from the isochoric heat-capacity measurements on the coexistence curve. The observed isochoric heat capacity along the critical isochore of the CO 2 + n-decane mixture exhibits a renormalization of the critical behavior of C VX typical for mixtures. The values of the characteristic parameters (K 1 , K 2 ), temperatures (τ 1 , τ 2 ), and the characteristic density differences ( ρ 1 , ρ 2 ) were estimated for the CO 2 + n-decane mixture by using the critical-curve data and the theory of critical phenomena in 730 Polikhronidi, Batyrova, Abdulagatov, and Stepanov binary mixtures. The ranges of conditions were defined on the T-x plane for the critical isochore and the ρ-x plane for the critical isotherm, for which we observed renormalization of the critical behavior for the isochoric heat capacity.

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Section: Introductionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Isochoric Heat Capacity of CO2 + n-Decane Mixtures in the Critical Region

et al. 2006

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“…have been introduced. An improvement of the results for strongly asymmetric systems (mixtures with compounds different in size) was achieved by Li et al (7) A detailed analysis of different thermodynamic properties like enthalpy and volume effects and their representation by PSRK was given for (carbon dioxide + ethane) by Horstmann et al (8) Most of the available experimental information for gas solubility is given in terms of solubility coefficients, which are based on the approximate linearity of gas solubility with its partial pressure at low concentration and low pressure. They can be used to fit the interaction parameter for the classical mixing rules for cubic equations of state.…”

Section: Introductionmentioning

confidence: 99%

Experimental determination of oxygen and nitrogen solubility in organic solvents up to 10 MPa at temperatures between 298 K and 398 K

Fischer

Wilken

2001

The Journal of Chemical Thermodynamics

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123

113

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“…Solid lines: data yielded by the Eq. 11; dotted lines: data yielded by the RK-Twu EOS; dot-dot-dashed lines: vapor pressure lines of pure compounds; OE: CH 4 (1)-n-CO 2 (2): experimental data of Donnelly and Katz (1954); ‚: CO 2 (1)-n-C 2 H 6 (2): experimental data of Horstmann et al (2000); F: CO 2 (1)-n-C 3 H 8 (2): experimental data of Roof and Baron (1967); E: CO 2 (1)-n-C 4 H 10 (2): experimental data of Hsu et al (1985) and Leu and Robinson (1987); : CO 2 (1)-n-C 5 H 12 (2): experimental data of Cheng et al (1989); ƒ: CO 2 (1)-n-C 6 H 14 (2): experimental data of Ziegler et al (1995); f: CO 2 (1)-n-C 7 H 16 (2): experimental data of Chester and Haynes (1997); Ⅺ: CO 2 (1)-n-C 8 H 18 (2): experimental data of Ziegler et al (1995); ✚: CO 2 (1)-n-C 10 H 22 (2): experimental data of Chester and Haynes (1997).…”

Section: Resultsmentioning

confidence: 99%