Densities for liquid ethanol in the temperature range from 310 K to 480 K at pressures up to 200 MPa

Abstract

Density measurements at given temperatures and pressures in the compressed liquid phase for ethanol were carried out with a metal-bellows variable volumometer along eight isotherms between 310 K and 480 K at pressures from the vapor pressure to 200 MPa. The results cover the high-density region from 536 kg·m −3 to 882 kg·m −3 . The experimental uncertainties of temperature T, pressure p, and density r were estimated to be 24 mK, 20.0010·p, and 20.0010·r, respectively. Measurements of saturated liquid density at temperatures from 320 K to 480 K are also reported. The isothermal compressibility and isobaric expansivity on the basis of the present results are presented. 7

Thermodynamic properties of { C2H5OH+(1− )H2O} in the temperature range from 320 K to 420 K at pressures up to 200 MPa

“…Here, the densities of H 2 O were calculated from an equation of state proposed by Haar et al, (58) and those for C 2 H 5 OH were from our previous measurements. (49,50) The results are shown in figure 3. The V E m of this mixture indicates negative values in the temperature and pressure range of the present measurements and approaches zero with increasing pressure, as shown in figure 3.…”

“…We measured the bubble pressures, saturated-liquid densities, and (p, r, T ) properties for {xC 2 H 5 OH + (1−x)H 2 O} with x = (0.1002 2 0.0001), (58) whereas those for C 2 H 5 OH are from our previous measurements (48)(49)(50) except for the vapor pressure at T = 420 K which is from a correlation by Smith and Srivastava. (59) The experimental results for the density are given in tables 3 to 7.…”

“…The results of the measurements for pure ethanol were reported in our previous publications. (48)(49)(50) The present paper presents the results for …”

Thermodynamic properties of {xCH3OH +(1−x)H2O} withx= (1.0000 and 0.4993) in the temperature range from 320K to 420K at pressures up to 200MPa

“…The measurements were carried out using a metal-bellows volumometer which was previously used to obtain densities of trifluoroethanol, (9,10) aqueous trifluoroethanol mixtures, (11,12) ammonia, (13) ethanol, (14,15) and aqueous ethanol mixtures. (16) The apparatus and the experimental procedures have been described in detail elsewhere.…”

Synthesis of diethyl carbonate from ethanol through different routes: A thermodynamic and comparative analysis

“…For these reactions, effect of pressure was negligible. [37] For gaseous reactions, the effect of pressure is considerable when Dn 6 ¼ 0 (Dn ¼ difference in number of moles of product and reactant of gaseous component). Hence, the effect of pressure was studied for two routes namely CO 2 and urea.…”