Phase-equilibriums behavior of the binary systems carbon dioxide-n-butylbenzene and carbon dioxide-trans-decalin

Abstract

Pressure, liquid-phase composition, and liquid-phase molar volume data are presented for the binary vapor-liquid systems C02-/rans-decalln at 0, 25, 50, and 75 °C and C02-n-butylbenzene at 0 and 20 °C. Also, pressure, liquidphase compositions, and molar volumes of the two coexisting liquid phases as a function of temperature are presented for the same binary systems along their Li-L2-V loci. The termination points of these loci are located and characterized.The authors have been engaged in studying the phase equilibria behavior of C02-hydrocarbon systems, with a view to providing data which would be useful for the design of economically attractive separation processes using C02 as a selective solvent. To date, the phase equilibria behavior of binary and ternary C02-hydrocarbon mixtures along liquid-vapor, solid-liquid-vapor, and liquid-liquid-vapor surfaces has been studied by Huie et al. (3), C02-n-decane-n-eicosane; Kulkarni et al. (5), C02-n-decane-2-methylnaphthalene; Zarah et al. ( 8), C02-n-butyibenzene-n-eicosane; and Yang et al. ( 7), C02n-butylbenzene-2-methylnaphthalene. These studies focused on systems high in the concentration of the heavier hydrocarbon

High-pressure phase behaviour of the binary system {CO2+cis-decalin} from (292.75 to 373.75)K

“…It is likely that the binary mixture {CO 2 (1) + cis-decalin (2)} belongs to type III binary systems according to the classification scheme of van Konynenburg and Scott [28]. This behaviour is not surprising since the binary system {CO 2 (1) + trans-decalin (2)} is also of type III [17,18]. However, for the {CO 2 (1) + trans-decalin (2)} binary system, the UCEP temperature and pressure are slightly higher than for the binary {CO 2 (1) + cisdecalin (2)}.…”

“…However, for the {CO 2 (1) + trans-decalin (2)} binary system, the UCEP temperature and pressure are slightly higher than for the binary {CO 2 (1) + cisdecalin (2)}. Indeed, Tiffin et al [17] reported an UCEP temperature of 316.45 K and an UCEP pressure of 86.5 bar for the binary {CO 2 (1) + trans-decalin (2)}.…”

“…In the open literature, VLE data are available [16][17][18][19] for the binary system {CO 2 (1) + trans-decalin (2)} at temperatures from (273.15 to 523.60) K. On the other hand, from our knowledge, no paper has been published regarding to the binary system consisting of CO 2 and cis-decalin (cis-decahydro naphthalene). We thus decided to measure the phase equilibria for the system {CO 2 (1) + cis-decalin (2)}.…”

The Isothermal Compressibility of Gas-Saturated Hydrocarbon Liquids

“…Tiffin et al, (1978). The mole fractions and molar volumes presented in Table Al should be good to ± 0.006 and ± 1.0 mL/g-mol respectively.…”

Propriétés thermodynamiques de systèmes contenant des gaz acides. Étude bibliographique

“…Leder et Irani (1975) montrent que les diagrammes de phases des mélanges CO 2 -décaline et CO 2 -tétraline ont une forme semblable à celle d'un binaire avec un n-alcane plus lourd que le C 13 . Tiffin et al (1978) Lieu des points critiques pour des mélanges binaires CO 2 -alcane léger (d'après Poetmann et Katz, 1945). Locus of the critical points of the binaries CO 2 -light alcane (from Poetmann and Katz, 1945).…”