Isothermal Phase Equilibria and Excess Molar Enthalpies for Binary Systems with Dimethyl Ether at 323.15 K

Abstract

Isothermal vapor−liquid equilibria (VLE) and excess molar enthalpies (H E) for the binary systems of dimethyl ether (DME) with n-decane, n-dodecane, 1-octene, 1-decene, benzene, toluene, and water were measured at 323.15 K with a computer-driven static apparatus and an isothermal flow calorimeter, respectively. None of the measured binary systems show azeotropic behavior at this temperature. The system DME + water shows a miscibility gap. The experimental VLE and H E data were correlated with different G E models and the Redlich−Kister polynomial.

Thermodynamics of Mixtures Containing Oxaalkanes. 4. Random Mixing and Orientational Effects in Ether + Alkane Systems

“… a For symbols, see Table . b Reference VLE; V m E = 0. c Reference VLE and V m E d Reference VLE; ref V m E …”

“…D values were obtained using Redlich−Kister type expressions for G m E determined from vapor−liquid equilibrium (VLE) data at the temperature T available in the literature. − The V m E data required for the calculations were taken from refs and − . Table collects the isothermal compressibilities of pure compounds, κ T i , as well as their molar volumes, V i .…”

Thermodynamics of mixtures containing oxaalkanes. 5. Ether+benzene, or +toluene systems

“…H E m for solute(1) + organic solvent(2) mixtures at 298.15 K and equimolar composition vs. n, the number of C atoms in the alkane, or the number of C + O atoms in the ether: (1), benzene + n-alkane[59]; (2), CH3(CH2)uO(CH2)uCH3 + heptane[86,118,[120][121][122][123] (for u = 0, the alkane is decane and T = 323.15 K); (3), CH3O(CH2CH2O)uCH3 + heptane[52,[124][125][126]; (4) CH3(CH2)uO(CH2)uCH3 + benzene (for u = 0, T = 323.15 K)[86,92,101,102,105]; (5), CH3O(CH2CH2O)nCH3 + benzene (for u = 4, T = 345 K) [2,101,106]; (6), toluene + nalkane[60].…”

Treatment of Condensate and Water Blocks in Hydraulic-Fractured Shale-Gas/Condensate Reservoirs

“…Tables 1 and 2 summarize the compositions and Peng-Robinson equation-of-state (EOS) (Peng and Robinson 1976) parameters for Fluids A and B, respectively. The reservoir temperature is 130 F for both fluids.…”