Modification of Relative Volatilities by Addition of Solvent.

Abstract

V APOR -LIQUID equilibria were determined for the azeotropic binary system 2,4-dimethylpentane-benzene at 760, 400, and 250 mm. Hg pressure. Vapor-liquid equilibria were then determined at 400 mm. Hg pressure for the three ternary systems: the hydrocarbon binary system plus each of three polar solvents-hexylene glycol, aniline, and furfural. The main purpose of the study was to observe and correlate the effects of these extractive solvents on the hydrocarbon relative volatility. A Colburn vapor recirculating equilibrium still was used. All analyses were performed on a Beckman model GC-2 chromatograph. The error in the equilibrium determinations was less than 1%. The maximum temperature range experienced in this study, 36°C ., was with hexylene glycol as the solvent. CHEMICALS USEDThree hydrocarbons were used in this study: 2,4 dimethylpentane (2,4 DMP), benzene, and methylcyclohexane (MCH). The MCH was used in the analysis procedure. All three hydrocarbons were obtained (Phillips Petroleum Co.) as pure grade chemicals (guaranteed 99.0 mole % minimum purity). All of these hydrocarbons were eluted on the chromatograph at 70°C .; they were all of approximately 99.5 mole % purity as determined by the chromatograms. These hydrocarbons were used without further purification.

Evaluation of experimental and predicted vapor-liquid equilibrium data for systems relevant to biomass fast pyrolysis and catalytic upgrading

“…Stars (★) are for 2-methylfuran + benzene, Krevor and Prausnitz [32]. Triangles are for 2-furaldehyde + benzene: , Thornton and Garner [33]; , Kenny [34]; ◬, Stephenson and Van Winkle [35]. The results of Garner and Ellis [36] obtained in the same laboratory as Ref.…”

Recommended vapor pressures for aniline, nitromethane, 2-aminoethanol, and 1-methyl-2-pyrrolidone

“…Arc representation of vapor pressure data for aniline. , Kahlbaum [14]; , Gurevich and Sigalovskaya [15]; , Gould et al [16]; , Holtzlander and Riggle [17];  Röck [18]; , Stephenson and van Winkle [19]; , Pannetier et al [20]; , Danov and Shinyaeva [21]; , Gopal and Rizvi [22]; , Campbell et al [23]; , Maher and Smith [24];…”

“…A c c e p t e d M a n u s c r i p t Holtzlander and Riggle [17]; , Röck [18]; , Stephenson and van Winkle [19]; , Pannetier et al [20]; , Danov and Shinyaeva [21]; , Gopal and Rizvi [22]; , Campbell et al [23]; , Maher and Smith [24]; , Maher and Smith [25]; , Khurma et al [26]; , Gmehling [27]; , Rowley and Powell [28]; , Steele et al [13]; , absolute deviations. Some data listed in Table 4 are not displayed because they are out of scale.…”

Vapor-liquid equilibriums in the systems aniline-pseudocumene, o-toluidine-n-decane, and m-xylidine-n-dodecane at atmospheric pressure

“…In the literature there is little information available on vapor-liquid equilibria in systems formed by higher boiling constituents of coal tar including those of aniline and its derivatives with paraffin (3,6,12) and aromatic hydrocarbons (4, 7,13,15). Only binary azeotropes of aniline with one-ring aromatics and n-paraffins (8, 9,14) and those of o-toluidine and m-xylidine with n-paraffins (9) were examined systematically.…”