Volumetric (PVT) and Calorimetric (CVVT) Measurements for Pure Methanol in the Liquid Phase

Aliev, M. M.; Magee, Joseph W.; Abdulagatov, Ilmutdin M.

doi:10.1023/b:ijot.0000004092.61076.56

Cited by 12 publications

(11 citation statements)

References 25 publications

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“…Except for the data reported by Abdulagatov et al [4], all previous C V −V−T measurements for pure methanol [29,46,47] have been performed at low temperatures (up to 420 K) in the liquid phase with twin calorime- [2-4, 7, 25, 33, 36, 41, 45, 68, 120, 131, 135] together with values calculated with CREOS97-04 and various correlations developed by other authors [22,23,27,30,44].…”

Section: Caloric Propertiesmentioning

confidence: 87%

“…This makes it extremely difficult to select primary thermodynamically consistent data sets for developing an accurate equation of state. At the present time, there are some compilations of the thermodynamic properties of methanol, namely, those reported by IUPAC [22], Eubank [28], Aliev et al [29], and Zubarev et al [30]. Experimental thermodynamic data for pure methanol prior to 1993 were reviewed and compiled extensively under the auspices of IUPAC [22] and have been reported in the International Thermodynamic Tables of the Fluid State-12 [22].…”

Section: Previous Experimental Data For Methanol In the Critical Regionmentioning

confidence: 99%

“…Experimental thermodynamic data for pure methanol prior to 1993 were reviewed and compiled extensively under the auspices of IUPAC [22] and have been reported in the International Thermodynamic Tables of the Fluid State-12 [22]. Since then, new experimental data for methanol have appeared in the literature, which we have reviewed in a previous publication [29]. Therefore, we review here only the primary data sets used for developing an equation of state in the critical region and some selected secondary data sets used for the testing of the equation.…”

Section: Previous Experimental Data For Methanol In the Critical Regionmentioning

confidence: 99%

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Thermodynamic Properties of Methanol in the Critical and Supercritical Regions

et al. 2005

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The isochoric heat capacity of pure methanol in the temperature range from 482 to 533 K, at near-critical densities between 274.87 and 331.59 kg · m −3 , has been measured by using a high-temperature and high-pressure nearly constant volume adiabatic calorimeter. The measurements were performed in the singleand two-phase regions including along the coexistence curve. Uncertainties of the isochoric heat capacity measurements are estimated to be within 2%. The single-and two-phase isochoric heat capacities, temperatures, and densities at saturation were extracted from experimental data for each measured isochore. The critical temperature (T c = 512.78 ± 0.02 K) and the critical density (ρ c = 277.49 ± 2 kg · m −3 ) for pure methanol were derived from the isochoric heat-capacity measurements by using the well-established method of quasi-static thermograms. The results of the C V V T measurements together with recent new experimental PVT data for pure methanol were used to develop a thermodynamically self-consistent Helmholtz free-energy parametric crossover model, CREOS97-04. The accuracy of the crossover model was confirmed by a comprehensive comparison with available experimental data for pure methanol and values calculated with various multiparameter equations of state and correlations. In the critical and supercritical regions at 0.98T c T 1.5T c and in the density range 0.35ρ c ρ 1.65ρ c , CREOS97-04 represents all available experimental thermodynamic data for pure methanol to within their experimental uncertainties.

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Section: Caloric Propertiesmentioning

confidence: 87%

Section: Previous Experimental Data For Methanol In the Critical Regionmentioning

confidence: 99%

Section: Previous Experimental Data For Methanol In the Critical Regionmentioning

confidence: 99%

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Thermodynamic Properties of Methanol in the Critical and Supercritical Regions

et al. 2005

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“…Eubank [13] reported also, in 1970, a review of earlier work on the thermodynamic and other physical properties of methanol. In our recent papers (Abdulagatov et al [14] and Aliev et al [15]), we reviewed also new publications on thermodynamic properties of pure methanol, after 1992. Therefore, here we will briefly review only work where isochoric heatcapacity, phase-boundary, and critical-properties data were reported.…”

Section: Isochoric Heat-capacity Measurementsmentioning

confidence: 99%

“…Recently, a limited number of measurements of the C V V T properties for pure methanol have been reported by various authors [4,[14][15][16][17][18]. The measurements of Aliev et al [15], Kitajima et al [16], and Kuroki et al [17] cover the low-temperature (below 420 K) range in the liquid phase.…”

Section: Isochoric Heat-capacity Measurementsmentioning

confidence: 99%

Isochoric Heat-Capacity Measurements for Pure Methanol in the Near-Critical and Supercritical Regions

et al. 2007

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Isochoric heat-capacity measurements for pure methanol are presented as a function of temperature at fixed densities between 136 and 750 kg·m −3 . The measurements cover a range of temperatures from 300 to 556 K. The coverage includes the one-and two-phase regions, the coexistence curve, the near-critical, and the supercritical regions. A high-temperature, high-pressure, adiabatic, and nearly constant-volume calorimeter was used for the measurements. Uncertainties of the heat-capacity measurements are estimated to be 2-3% depending on the experimental density and temperature. Temperatures at saturation, T S (ρ), for each measured density (isochore) were measured using a quasi-static thermogram technique. The uncertainty of the phase-transition temperature measurements is 0.02 K. The critical temperature and the critical density for pure methanol were extracted from the saturated data (T S , ρ S ) near the critical point. For one near-critical isochore (398.92 kg·m −3 ), the measurements were performed in both cooling and heating regimes to estimate the effect of thermal decomposition (chemical reaction) on the heat capacity and phase-transition properties of methanol. The measured values of C V and saturated densities (T S , ρ S ) for methanol were compared with values calculated from various multiparametric equations of state (EOS) (IUPAC, Bender-type, polynomial-type, and nonanalytical-type), scaling-type (crossover) EOS, and various correlations. The measured C V data have been analyzed and interpreted in terms of extended scaling equations for 163 0195-928X/07/0200-0163/0 © 2007 Springer Science+Business Media, LLC 164 Polikhronidi et al.the selected thermodynamic paths (critical isochore and coexistence curve) to accurately calculate the values of the asymptotical critical amplitudes (A ± 0 and B 0 ).

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