Gas chromatographic study of solution and adsorption of hydrocarbons on glycols

Abraham Model Correlations for Triethylene Glycol Solvent Derived from Infinite Dilution Activity Coefficient, Partition Coefficient and Solubility Data Measured at 298.15 K

“…Results are given inTable 1. Our values of limiting activity coefficients for several saturated and aromatic hydrocarbons are in good agreement with the results of Arancibia and Catoggio[29]. For other solutes, the values of   in triethylene glycol at 298.15 K are reported for the first time.…”

“…Infinite dilution activity coefficients (γ ∞ ) and gas-to-liquid partition coefficients were measured for 8 different liquid aliphatic and cyclic hydrocarbons (alkanes, cycloalkanes, alkynes), , 3-nitrobenzoic acid, 4-nitrobenzoic acid, 3,5-dinitrobenzoic acid, 3,5-dinitro-2methylbenzoic acid, benzil, benzoin, 1,4-dibromobenzene, 1,4-dichloro-2-nitrobenzene, diphenyl sulfone, 9-fluorenone, 1-chloroanthraquinone, and xanthene dissolved in triethylene glycol at 298.15 K using a static equilibration-spectrophotometric method of analysis. Abraham model correlations for both water-to-triethylene glycol partition coefficients (as log10 P) and gas-totriethylene glycol partition coefficients (as log10 K) were derived by combining our measured experimental data with published gas solubility and activity coefficient data for carbon dioxide [24], hydrogen sulfide [25], methane [26], ethane [26], propane [26], pentane [27], decane [28], dodecane [28], 2,2,4-trimethylpentane [29], cyclopentane [27], cyclohexane [29], cyclooctane [27], methylcyclohexane [29], ethylcyclohexane [29], 1-pentene [27], 1-hexene [27], 1-heptene [29], 1-octene [29], cis-2-hexene [28], 2,4,4-trimethyl-1-pentene [28], cyclohexene [29], 1pentyne [27], 1-hexyne [27], propylbenzene [29], isopropylbenzene [29], 2-chloro-2methylpropane [30], ethanol [27], 1-propanol [27], 2-propanol [27], and benzoic acid [31]. In total we have assembled experimental log10 (CS,organic/CS,water) and log10 (CS,organic/CS,gas) data for 82 different solutes to use in developing our Abraham model correlations.…”

“…For other solutes, the values of   in triethylene glycol at 298.15 K are reported for the first time. Limiting activity coefficients measured using gas chromatographic headspace analysis technique, gas-to-liquid partition coefficients, and the Gibbs free energies of solvation in triethylene glycol at T = 298.15 K a Solute   u(   )   (lit)[29] Log10 K…”

Empirical Prediction of Heats of Vaporization and Heats of Adsorption of Organic Compounds

“…This may in part be due to the adsorbed water that covers all these mineral surfaces at relative humidities above 30% and that tends to level out the influence of the different pure mineral surfaces on the adsorption interactions (16). To check how universal this relationship is we also collected literature data for the adsorption on the following organic surfaces: different carbon fibers (0%RH) (17), cellulose (>92% RH) (18), wood fibers (0% RH) (4), soot (70% RH) (19), glycerol (20), and mono-, di-, and triethyleneglycol (21,22). For the liquid organic phases, adsorption and absorption of organic compounds occur simultaneously, and for phases thicker than about 1 µm absorption becomes the dominant process (20)(21)(22).…”

Framework for correlating the effect of temperature on nonelectrolyte and ionic liquid activity coefficients

“…. Data were taken from the following references: top,; bottom,. [Color figure can be viewed in the online issue, which is available at http://wileyonlinelibrary.com.…”