Volumetric Properties of Carbon Dioxide + Toluene at High Pressures

Pöhler, Holger; Kiran, Erdoǧan

doi:10.1021/je950273n

Cited by 31 publications

(23 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This is probably due to the fact that the polyether is less compressible than the refrigerant. Similar behavior has been found by Kiran et al 15 and by Pöhler et al 16 …”

Section: Resultssupporting

confidence: 88%

High-Pressure Volumetric Behavior of x 1,1,1,2-Tetrafluoroethane + (1 − x) 2,5,8,11,14-Pentaoxapentadecane (TEGDME) Mixtures

et al. 2002

View full text Add to dashboard Cite

This paper reports 1017 new pVT measurements of the x 1,1,1,2-tetrafluoroethane (HFC-134a) + (1 -x) 2,5,8,11,14-pentaoxapentadecane (TEGDME) system for x ) 0. 0, 0.1114, 0.2896, 0.3648, 0.5702, 0.6931, 0.7288, 0.8727, 0.9290, and 1 between 10 and 60 MPa in the temperature range 293.15 K to 373.15 K at 5 MPa and 10 K intervals, respectively. In almost all the measurement range, the density of the pure compressed refrigerant is greater than that of the pure polyether. For temperatures higher than 343.15 K, the isocomposition curves for the mixtures show an intersection point. Similar behavior has been previously found for HFC-134a + triethylene glycol dimethyl ether, carbon dioxide + alkane or toluene systems, and mixtures of R-410A with polyolester lubricants. The excess molar volume is negative over the whole composition range at all temperatures and pressures.

show abstract

“…This is probably due to the fact that the polyether is less compressible than the refrigerant. Similar behavior has been found by Kiran et al 15 and by Pöhler et al 16 …”

Section: Resultssupporting

confidence: 88%

High-Pressure Volumetric Behavior of x 1,1,1,2-Tetrafluoroethane + (1 − x) 2,5,8,11,14-Pentaoxapentadecane (TEGDME) Mixtures

et al. 2002

View full text Add to dashboard Cite

show abstract

“…These data show good agreement to within 0.2% with the data by Magee and Bruno 9 and Pöhler and Kiran 13 at temperatures up to 423 K and pressures up to 50 MPa. The differences between the Franck et al 13 data and measurements by Akhundov and Abdullaev 11,12 and Straty et al 10 at high temperatures and low pressures (P < 50 MPa) reached up to (1.2 to 1.5)%. Magee and Bruno 9 reported data in the temperature range from (180 to 400) K and at pressures up to 35 MPa.…”

Section: Introductionmentioning

confidence: 76%

PVT Measurements for Toluene in the Near-Critical and Supercritical Regions

et al. 2001

View full text Add to dashboard Cite

The PVT relationships of toluene were measured in the near-critical and supercritical regions. Measurements were made using a constant-volume piezometer immersed in a precision thermostat. The volume of the piezometer V PT was corrected for both temperature and pressure expansions. The temperature was measured with a 10 Ω platinum resistance thermometer (PRT-10) with an uncertainty of 10 mK. Pressure was measured by means of a dead-weight gauge with an uncertainty of (0.0015 to 0.002) MPa. Uncertainties of the density measurements are estimated to be (0.05 to 0.10)%, depending on the experimental pressure and temperature. The volume of the piezometer V PT was calibrated using a reference fluid (water) with well-known PVT properties at various temperatures and pressures. Measurements were made along various near-critical and supercritical isotherms between (591 and 673) K at pressures from (4 to 36) MPa. The measured PVT data for toluene were compared with values calculated from equations of state and previous measurements of other authors. The accuracy of the method was confirmed by PVT measurements for pure water in the critical and supercritical regions.

show abstract

“…Few studies reporting experimental data of binary mixtures of alcohols or acetone with CO 2 are reported in the literature [231][232][233][234]. Indeed, most studies reporting experimental values of the volumetric behaviour of mixtures with CO 2 or other gases at high pressures relate to hydrocarbons [235][236][237][238][239][240][241][242]. Fluid densities can also be obtained from phase equilibrium modelling by use of an appropriate EoS.…”

mentioning

confidence: 99%