The aim of this study is to investigate the possible use ILs as solvents for two separation problems frequently encountered in petroleum industry: {aromatic sulfur compound + aliphatic hydrocarbon} or {nitrogen hydrocarbon}. This work focused on three ILs: 1-ethyl-3-methylimidazolium thiocyanate, 1,3-dimethylimidazolium methylphosphonate, and tris-(2-hydroxyethyl)-methylammonium-methylsulfate. In first part article, a new ternary systems studied view defining capacity proposed extraction...

Abstract The PPR78 approach is a group contribution‐based thermodynamic model which combines at constant packing fraction the Peng–Robinson equation of state and Van Laar‐type g E model. This article demonstrates that, using classical mixing rules (linear on b quadratic ), may also be seen as contribution method for estimation temperature‐dependent k ij widely used PR EoS. Our endowed 15 groups it possible to predict any mixture containing alkanes, aromatics, naphthenes, CO 2 , N H S,...

Partition coefficients of 51 organic compounds in two ionic liquids (IL), 1-ethyl-3-methylimidazolium dicyanamide and trimethylhexylammonium bis((trifluoromethyl)sulfonyl)amide, were measured using inverse gas chromatography from (322.5 to 352.5) K. These partition converted into water-to-IL the corresponding gas-to-water coefficients. Both sets analyzed Abraham solvation parameter model with cation-specific anion-specific equation The derived equations correlated experimental gas-to-IL...

In this work, 1H and 31P NMR spectroscopy were used to study the interactions between thiophene or benzene with three imidazolium based ionic liquids (ILs): 1-butyl-3-methylimidazolium tetrafluoroborate, 1,3-dimethylimidazolium methylphosphonate, thiocyanate. indicates that solubility of in liquid strongly depends on structure liquid. Structural organizations such systems have been proposed. From these results, liquid−liquid equilibria (LLE) measurements ternary mixtures containing n-heptane...

This work is focused on the possible capture of carbon dioxide using ionic liquids (ILs). Such solvents are gaining special attention because efficiency many processes can be enhanced by judicious manipulation their properties. The absorption greenhouse gases basic character IL. In this work, these characteristics evaluated through study gas−liquid equilibrium four imidazolium-based ILs: 1-butyl-3-methylimidazolium tetrafluoroborate [BMIM][BF4], thiocyanate [BMIM][SCN],...

The goal of this work was to check the ability PC-SAFT equation represent solubility carbon dioxide (CO(2)) in ionic liquids. Parameters pure imidazolium-based liquids were estimated using experimental densities over a large range temperatures and then correlated with respect molecular weight structure solvents. It found that such correlation is able predict density high accuracy. studied. binary interaction parameter k(ij) needed for representation systems first fitted liquid-vapor...

Activity coefficients at infinite dilution of 31 organic compounds in three room-temperature ionic liquids (RTILs) were determined using inverse gas chromatography. The measurements carried out different temperatures between 313.15 and 333.15 K. regular solution theory was used to estimate the solubility parameters each RTIL. Such a also predict CO2 given RTIL upper critical temperature binary system containing 1-butanol 1-butyl-3-methylimidazolium hexafluorophosphate. accuracy results...

Activity coefficients of 52 organic compounds in four ionic liquids (ILs), 1,3-dimethoxyimidazolium bis((trifluoromethyl)sulfonyl)imide, 1-(methylethylether)-3-methylimidazolium 1-ethanol-3-methylimidazolium bis((trifluoromethyl)-sulfonyl)imide, and 1-(3-cyanopropyl)-3-methylimidazolium dicyanamide, were measured using inverse gas chromatography from (312 to 353) K. The retention data also converted gas-to-IL partition water-to-IL the corresponding gas-to-water coefficients. Both sets...

The phase behavior of water/hydrocarbon mixtures in a wide range concentrations, temperatures, and pressures is important variety chemical engineering applications. For this reason, the physical understanding mathematical modeling these aqueous–organic constitute challenging task, both for scientists applied engineers. In work, mutual solubilities, critical loci, mixing enthalpies water + hydrocarbon, carbon dioxide, nitrogen, hydrogen sulfide, binary are predicted using PPR78 cubic equation...

Activity coefficients of 42 to 54 organic compounds in the four ionic liquids (ILs) 1-hexyl-3-methylimidazolium tris(pentafluoroethyl)trifluorophosphate, 1-butyl-3-methylimidazolium bis(pentafluoroethylsulfonyl)imide, 1,3-didecyl-2-methylimidazolium bis(trifluoromethylsulfonyl)imide, and 1-ethyl-3-methylimidazolium methanesulfonate were measured using inverse gas chromatography from (312 353) K. The retention data also converted gas-to-IL water-to-IL partition corresponding gas-to-water...

The aim of this study is to investigate the possible use 1-butyl-3-methylimidazolium trifluoromethanesulfonate ([BMIM][OTf]) as solvent for three separation tasks which appear in deep desulfurization fuels: {aromatic sulfur compound + aliphatic hydrocarbon}, {nitrogen or {sulfur hydrocarbon}. New ternary systems are studied capacity and selectivity [BMIM][OTf] extraction nitrogen containing aromatic organic compounds from hydrocarbons. Aromatic hydrocarbon capture, often appears causing...