NDLI: Volumetric (PVT) and Calorimetric (C $_{V}$ VT) Measurements for Pure Methanol in the Liquid Phase

Content Provider	Springer Nature Link
Author	Aliev, M. M. Magee, J. W. Abdulagatov, I. M.
Copyright Year	2003
Abstract	Volumetric (PVT) and calorimetric (C $_{ V }$ VT) properties of pure methanol were measured in the liquid phase with a twin-cell adiabatic calorimeter. Temperatures were measured in a range from 314 to 411 K, densities between 699.3 and 775.6 kg⋅m$^{−3}$, and pressures to 20 MPa. The calorimetric cell (70 cm$^{3}$ capacity) was surrounded by adiabatic thermal shielding (high vacuum). The sample pressures were measured by means of a quartz crystal transducer to within an uncertainty of about ±7 kPa. The relative uncertainty of C $_{ V }$ was estimated to be 2%, with a coverage factor k = 2, by combining the various sources of experimental uncertainty using a root-sum-of-squares formula. The results for pure methanol were compared with other recent measurements performed with a second high-temperature, high-pressure adiabatic calorimeter. Deviations of less than 3% were found between the earlier C $_{ V }$ data and the present results for pure methanol. The uncertainty of the density measurements was estimated to be 0.2% (k = 2). The measured densities and isochoric heat capacities were compared with values calculated with an IUPAC equation of state. Agreement of density was within 0.088% and that for isochoric heat capacity was within 0.95%. Values of vapor pressure were determined by extrapolating experimental P–T data to the saturated temperature along a fixed isochore. In the temperature range of this study, decomposition of methanol was not observed.
Starting Page	1527
Ending Page	1549
Page Count	23
File Format	PDF
ISSN	0195928X
Journal	International Journal of Thermophysics
Volume Number	24
Issue Number	6
e-ISSN	15729567
Language	English
Publisher	Kluwer Academic Publishers-Plenum Publishers
Publisher Date	2003-01-01
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Physical Chemistry Industrial Chemistry/Chemical Engineering Mechanics Condensed Matter
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics

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