Equilibrium-phase properties of isobutane-ethane system

Abstract

Vapor and liquid equilibrium-phase compositions and refractive indices were determined for the /-butaneethane system at 100.6°, 160.4°, 219.7°, and 249.6°F from the vapor pressure of /-butane to pressures in the critical region for the system. An analysis of data reported earlier on this system at temperatures of 32°, -

Vapor-liquid equilibrium of carbon dioxide with isobutane and n-butane: Modified leung-griffiths correlation and data evaluation

“…We also readjusted the P-T critical locus, since the latter’s data extends closer to the critical line. Very similar irregularities were encountered in a separate analysis of the ethane + isobutane data also measured by Besserer and Robinson [ 33 ].…”

The precise measurement of the (vapour + liquid) equilibrium properties for (CO2+ isobutane) binary mixtures

“…Figures 4 and 5 show the relative pressure deviations versus composition of the PR model in REFPROP ver.8 for the P bub and P dew , respectively. The literature data of Besserer and Robinson [11], Nagahama et al [12], Weber [13], Lue and Robinson [14], and Weber [15] are also included in these figures.…”

“…[11]; Â, Nagahama et al [12]; 4, Weber [13]; e, Lue and Robinson [14]; h, Weber [15]. (P cal -P exp )/P exp y co2 / mol·mol -1 FIGURE 5.…”

“…(P cal -P exp )/P exp y co2 / mol·mol -1 FIGURE 5. Plot of relative pressure deviations of the dew point pressures (P dew ) for (CO 2 + isobutane) binary mixtures versus CO 2 mole fraction: d, This work; +, Besserer and Robinson [11]; Â, Nagahama et al [12]; 4, Weber [13]; e, Lue and Robinson [14]; h, Weber [15].…”

The fibre optic reflectometer: A new and simple probe for refractive index and phase separation measurements in gases, liquids and supercritical fluids

“…Furthermore, in many cases, the final products of a reaction depend on the phase, gas or liquid, in which reaction takes place. 6 Temperature, pressure and visual monitoring in a view cell are the most widely used methods of establishing conditions in a high-pressure reactor. However, there are many occasions when it is important to obtain at least an estimate of the density of the reaction mixture.…”