Excess Enthalpies and Volumes of Ternary Mixtures Containing 1-Propanol or 1-Butanol, an Ether (Diisopropyl Ether or Dibutyl Ether), and Heptane

Rezanova, Elena N.; Kammerer, and Klaus; Lichtenthaler, R. N.

doi:10.1021/je9901785

Cited by 42 publications

(29 citation statements)

References 31 publications

(28 reference statements)

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“…Based on the analytical interpolation of binary composition ðx 0 i ; x 0 j Þ, these models are of two categories: symmetrical (equations (8), (11), (13) to (14)), and asymmetrical (equations (9), (10), (12), (16)). …”

Section: Resultsmentioning

confidence: 99%

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Volumetric properties of binary and ternary mixtures of diisopropyl ether, α,α,α-trifluorotoluene, 2,2,2-trifluoroethanol, and ethanol at a temperature 298.15K and pressure 101kPa

Atik

Lourdani

2007

The Journal of Chemical Thermodynamics

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Section: Resultsmentioning

confidence: 99%

“…They are widely used octane enhancing additives in gasoline production processes, improving combustion and reducing emissions and the contaminant agents of automobile catalysts, and are alternative oxygenated stabilizers in unleaded gasoline [9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Volumetric properties of binary and ternary mixtures of diisopropyl ether, α,α,α-trifluorotoluene, 2,2,2-trifluoroethanol, and ethanol at a temperature 298.15K and pressure 101kPa

Atik

Lourdani

2007

The Journal of Chemical Thermodynamics

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“…DEE is one of the main additives used as oxygenating agents in gasoline technology. DEE and other ethers are added to gasoline to increase their octane number (as an octane enhancer or effective modifier to improve the gasoline octane number, or as blending agents for gasoline) and decrease carbon monoxide emission, and reduce particulate and NO x emissions (in a safe, efficient, cost-effective way) [32,33]. DEE properties are similar to those of gasoline components.…”

Section: Technological Applicationmentioning

confidence: 99%

Experimental Study of the Isochoric Heat Capacity of Diethyl Ether (DEE) in the Critical and Supercritical Regions

et al. 2012

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Two-and one-phase liquid and vapor isochoric heat capacities (C V ρT relationship) of diethyl ether (DEE) in the critical and supercritical regions have been measured with a high-temperature and high-pressure nearly constant-volume adiabatic calorimeter. The measurements were carried out in the temperature range from 347 K to 575 K for 12 liquid and 5 vapor densities from 212.6 kg· m −3 to 534.6 kg· m −3 . The expanded uncertainties (coverage factor k = 2, two-standard deviation estimate) for values of the heat capacity were 2 % to 3 % in the near-critical region, 1.0 % to 1.5 % for the liquid isochores, and 3 % to 4 % for the vapor isochores. The uncertainties of density (ρ) and temperature (T ) measurements were 0.02 % and 15 mK, respectively. The values of the internal energy, U (T, V ), and second temperature derivative of pressure, ∂ 2 P/∂ T 2 ρ , were derived using the measured C V data near the critical 123 186 Int J Thermophys (2012) 33:185-219 point. The critical anomaly of the measured C V and derived values of U (T, V ) and ∂ 2 P/∂ T 2 ρ in the critical and supercritical regions were interpreted in terms of the scaling theory of critical phenomena. The asymptotic critical amplitudes ( A + 0 and A − 0 ) of the scaling power laws along the critical isochore for one-and two-phase C V were calculated from the measured values of C V . Experimentally derived values of the critical amplitude ratio for C V A + 0 /A − 0 = 0.521 are in good agreement with the values predicted by scaling theory. The measured C V data for DEE were analyzed to study the behavior of loci of isothermal and isochoric C V maxima and minima in the critical and supercritical regions.

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“…DEE is one of the main additives used as oxygenating agents in gasoline technology. DEE and other ethers are added to gasoline to increase their octane number (as octane enhancer or effective modifier to improve the gasoline octane number, blending agents for gasoline) and decrease carbon monoxide emission, and reduce particulate and NOx emissions (in a safe, efficient, cost-effective way) [1,2]. DEE properties are similar to gasoline components.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study of the Thermodynamic Properties of Diethyl Ether (DEE) at Saturation

et al. 2011

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The isochoric heat capacities C V 1 , C V 1 , C V 2 , C V 2 , saturation densities (ρ S and ρ S ), vapor pressures (P S ), thermal-pressure coefficients γ V = (∂ P/∂ T ) V , and first temperature derivatives of the vapor pressure γ S = (dP S /dT ) of diethyl ether (DEE) on the liquid-gas coexistence curve near the critical point have been measured with a high-temperature and high-pressure nearly constant-volume adiabatic piezocalorimeter. The measurements of (C V 1 , C V 1 , C V 2 , C V 2 ) were made in the liquid and vapor one-and two-phase regions along the coexistence curve. The calorimeter was additionally supplied with a calibrated extensometer to accurately and simultaneously measure the PVT , C V VT , and thermal-pressure coefficient, γ V , along the saturation curve. The measurements were carried out in the temperature range from 416 K to 466.845 K (the critical temperature) for 17 liquid and vapor densities from 212.6 kg · m −3 to 534.6 kg · m −3 . The quasi-static thermo-(reading of PRT, T − τ 123 560 Int J Thermophys (2011) 32:559-595 plot) and baro-gram (readings of the tensotransducer, P − τ plot) techniques were used to accurately measure the phase-transition parameters (P S , ρ S , T S ) and γ V . The total experimental uncertainty of density (ρ S ), pressure (P S ), temperature (T S ), isochoric heat capacities (C V 1 , C V 1 , C V 2 , C V 2 ), and thermal-pressure coefficient, γ V , were estimated to be 0.02 % to 0.05 %, 0.05 %, 15 mK, 2 % to 3 %, and 0.12 % to 1.5 %, respectively. The measured values of saturated caloric C V 1 , C V 1 , C V 2 , C V 2 and saturated thermal (P S , ρ S , T S ) properties were used to calculate other derived thermodynamic properties C P , C S , W, K T , P int , H vap , and (∂ V /∂ T ) P of DEE near the critical point. The second temperature derivatives of the vapor pressure, d 2 P S /dT 2 , and chemical potential, d 2 μ/dT 2 , were also calculated directly from the measured one-and two-phase liquid and vapor isochoric heat capacities (C V 1 , C V 1 , C V 2 , C V 2 ) near the critical point. The derived values of d 2 P S /dT 2 from calorimetric measurements were compared with values calculated from vapor-pressure equations. The measured and derived thermodynamic properties of DEE near the critical point were interpreted in terms of the "complete scaling" theory of critical phenomena. In particular, the effect of a Yang-Yang anomaly of strength R μ on the coexistence-curve diameter behavior near the critical point was studied. Extended scaling-type equations for the measured properties P S (T ), ρ S (T ), and (C V 1 , C V 1 , C V 2 , C V 2 ) as a function of temperature were developed.

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Excess Enthalpies and Volumes of Ternary Mixtures Containing 1-Propanol or 1-Butanol, an Ether (Diisopropyl Ether or Dibutyl Ether), and Heptane

Cited by 42 publications

References 31 publications

Volumetric properties of binary and ternary mixtures of diisopropyl ether, α,α,α-trifluorotoluene, 2,2,2-trifluoroethanol, and ethanol at a temperature 298.15K and pressure 101kPa

Volumetric properties of binary and ternary mixtures of diisopropyl ether, α,α,α-trifluorotoluene, 2,2,2-trifluoroethanol, and ethanol at a temperature 298.15K and pressure 101kPa

Experimental Study of the Isochoric Heat Capacity of Diethyl Ether (DEE) in the Critical and Supercritical Regions

Experimental Study of the Thermodynamic Properties of Diethyl Ether (DEE) at Saturation

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