Separation of binary mixtures hexane/hex-1-ene, cyclohexane/cyclohexene and ethylbenzene/styrene based on gamma infinity data measurements

Published on Mar 1, 2018in The Journal of Chemical Thermodynamics3.178
· DOI :10.1016/J.JCT.2017.11.017
Monika Karpińska20
Estimated H-index: 20
(Warsaw University of Technology),
Michał Wlazło21
Estimated H-index: 21
(Warsaw University of Technology)
+ 1 AuthorsUrszula Domańska73
Estimated H-index: 73
(UKZN: University of KwaZulu-Natal)
Sources
Abstract
Abstract The activity coefficients γ 13 ∞ at infinite dilution for 64 solutes were determined in the 1-(3-hydroxypropyl)-3-methylimidazolium dicyanamide, [N-C3OHMIM][DCA] and 58 solutes in (3-hydroxypropyl)-1-methylmorpholinium dicyanamide, [N-C3OHMMor][DCA] using the gas-liquid chromatography technique. Measurements were undertaken at six temperatures, in 10 K intervals, in the range of (298.15–368.15) K. The solutes studied included both non-polar and polar compounds, as alkanes, alkenes, and alkynes, as well as aromatic hydrocarbons, alcohols, water, ethers, ketones, acetonitrile, pyridine, 1-nitropropane, thiophene, and esters. Density, ρ, measurements for a range of temperatures (298.15–368.15) K for the synthesized, new ionic liquids (ILs) were also undertaken at pressure, p = 101 kPa. The gas-liquid partition coefficients, K L at infinite dilution, and the fundamental thermodynamic functions, partial molar excess Gibbs energy, enthalpy and entropy at infinite dilution were calculated from the experimental data measurements. The values of selectivity and capacity for three separation cases, viz. hexane/hex-1-ene, cyclohexane/cyclohexene, and ethylbenzene/styrene were calculated from γ 13 ∞ values and compared to literature for imidazolium-based, morfolinium-based, or dicyanamide-based, ILs. The results from the study indicate that [N-C3OHMIM][DCA] has large selectivity values for all three of the separation cases studied and that [N-C3OHMMor][DCA] has the largest selectivity ever noted for cyclohexane/cyclohexene, and ethylbenzene/styrene separation processes.
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References21
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#1Urszula Domańska (UKZN: University of KwaZulu-Natal)H-Index: 73
#2Michał Wlazło (Warsaw University of Technology)H-Index: 21
Last. Maciej Zawadzki (Warsaw University of Technology)H-Index: 19
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Abstract The measurements of a limiting activity coefficients, γ 13 ∞ at infinite dilution for 63 solutes including wide spectra of alkanes, alkenes and alkynes as well as aromatic hydrocarbons, alcohols, water, ethers, ketones, acetonitrile, pyridine, 1-nitropropane, thiophene, and esters in the 1-(3-hydroxypropyl)pyridinium dicyanamide, [ N -C 3 OHPY][DCA], determined by gas-liquid chromatography at temperature range of (298.15–368.15) K are developed. The synthesis and thermochemical characte...
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#1Monika Karpińska (Warsaw University of Technology)H-Index: 20
#2Michał Wlazło (Warsaw University of Technology)H-Index: 21
Last. Urszula Domańska (UKZN: University of KwaZulu-Natal)H-Index: 73
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The effect of interactions between organic solvents or water on the interfacial and bulk properties of 1-benzyl-3-methylimidazolium dicyanamide, [BzMIM][DCA] and 1-benzyl-3-methylimidazolium bis{(trifluoromethyl)sulfonyl}imide, [BzMIM][NTf2] were determined via measurement of activity coefficients γ∞13 at infinite dilution for 64 solutes. The data were obtained using the gas–liquid chromatography technique. Measurements were undertaken at six temperatures, in 10 K intervals, in the range of 318....
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#1Urszula Domańska (UKZN: University of KwaZulu-Natal)H-Index: 73
#2Michał Wlazło (Warsaw University of Technology)H-Index: 21
Last. Monika Karpińska (Warsaw University of Technology)H-Index: 20
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Abstract The work presented focused on the experimental data of the activity coefficients at infinite dilution, ( γ 13 ∞ ) of several solutes in ionic liquid of 1-butyl-3-methylimidazolium dicyanamide, [BMIM][DCA]. The values of γ 13 ∞ for 64 solutes, including alkanes, cycloalkanes, alkenes, alkynes, aromatic hydrocarbons, alcohols, water, ethers, ketones, acetonitrile, pyridine, 1-nitropropane, thiophene, and esters in [BMIM][DCA] were determined by gas–liquid chromatography at six temperature...
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#1Marcos Larriba (University of Manchester)H-Index: 29
#2Pablo Navarro (Complutense University of Madrid)H-Index: 24
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Abstract In this work, we have studied the potential use of the 1-allyl-3-methylimidazolium dicyanamide ([amim][DCA]) and the 1-benzyl-3-methylimidazolium dicyanamide ([bzmim][DCA]) ionic liquids (ILs) in the liquid–liquid extraction of aromatic hydrocarbons. To design an industrial process of extraction of aromatic hydrocarbons from alkanes, it is essential to measure the liquid–liquid and vapor–liquid equilibria between solutes and solvent, and to perform also a thermophysical characterization...
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In the present work the limiting activity coefficients (γ13∞) for 65 solutes, including polar and nonpolar solutes as alkanes, alkenes, and alkynes as well as aromatic hydrocarbons, alcohols, water, ethers, ketones, acetonitrile, pyridine, 1-nitropropane, thiophene, and esters in the 1-allyl-3-methylimidazolium dicyanamide ([AMIM][DCA]) were determined by gas–liquid chromatography at six temperatures in the range of (308.15 to 358.15) K. The gas–liquid partition coefficients, KL at infinite dilu...
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#1Urszula Domańska (Warsaw University of Technology)H-Index: 73
#2Michał Wlazło (Warsaw University of Technology)H-Index: 21
Ionic liquids (ILs) are known as a new solvents with high extraction capacity for aromatic sulfur and aromatic compounds from gasoline and diesel in comparison to the conventional solvents. In this work the desulfurization ability of 21 ionic liquids in the extraction of sulfur organic compounds from hydrocarbons, which were used as a model of gasoline and diesel oils by solvent extraction, has been developed. With this aim, ternary liquid–liquid phase equilibrium data (LLE) has been obtained fo...
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#1Marek Królikowski (Warsaw University of Technology)H-Index: 27
#2Marta Królikowska (Warsaw University of Technology)H-Index: 22
Abstract The main aim of this paper is to investigate the possibility of using ionic liquid as a solvent for the separation processes, especially for extraction of azeotropic mixtures i.e. aliphatic from aromatic hydrocarbons. The first step in assessing the ability of selective extraction is to determine the selectivity based on measurements of activity coefficients at infinite dilution. In this work new data of the activity coefficients at infinite dilution for 53 solutes including: alkanes, a...
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Abstract The activity coefficients at infinite dilution, γ 13 ∞ and (gas + liquid) partition coefficients, K L for 61 solutes: alkanes, alkenes, alkynes, cycloalkanes, aromatic hydrocarbons, alcohols, thiophene, ethers, ketones, esters, butanal, nitrogen compounds and water in the ionic liquid 4-(3-hydroxy)-4-methylmorpholinium bis(trifluoromethylsulfonyl)-amide were determined by (gas + liquid) chromatography at the temperatures from (298.15 to 368.15) K. The partial molar excess Gibbs free ene...
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The objective of this work was to study the adsorption and separation of the most important families of hydrocarbon compounds on metal–organic frameworks (MOFs), in comparison with zeolites. For this purpose, we have selected four probe molecules, each of them representing one of these families, i.e., o- and p-xylene as aromatics, 1-octene as an alkene, and n-octane as an alkane. The separation of these four molecules was studied by binary breakthrough experiments. To represent the large diversi...
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#1Antje R. Hansmeier (TU/e: Eindhoven University of Technology)H-Index: 6
#2G. Wytze Meindersma (TU/e: Eindhoven University of Technology)H-Index: 11
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Ionic liquids can extract mono- and poly-aromatic sulfur and nitrogen compounds from gasoline and diesel and they perform better than conventional solvents. The extraction capacity of several ionic liquids for these heterocyclic compounds is determined and compared to the extraction capacity for aromatic hydrocarbons. Furthermore, the experimental results obtained are evaluated in view of the results reported in literature. It is shown that the ionic liquids investigated in this work are able to...
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#2Marta Królikowska (UKZN: University of KwaZulu-Natal)H-Index: 22
Last. Cezary Markowski (Warsaw University of Technology)
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Abstract null null Measurements of infinite dilution activity coefficients of 46 organic solutes including alkanes, alkenes, alkynes, aromatic hydrocarbons, alcohols, ethers, ketones, pyridine, thiophene, acetonitrile, and 1-nitropropane in ionic liquids (IL), 1-(3-hydroxypropyl)-3-methyl-imidazolium thiocyanate (abbreviated as [C1C3OHIM][SCN]) are reported in the temperature range from T = (318.15 to 358.15) K. Based on the experimental data, the infinite dilution capacity and selectivity of th...
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Abstract The infinite dilution activity coefficient, γ i ∞ , is a frequently used molecular descriptor to pre-select a solvent for various kinds of fluid separations. Unfortunately, information related to these coefficients is scattered through-out the open literature. Therefore, an open-source γ i ∞ -database containing 77.173 γ i ∞ data points over the temperature interval 243K γ i ∞ data points at 298.15K. The γ i ∞ for five solutes (n-hexane, benzene, chloroform, acetone and ethanol) in a wi...
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#2Sanka N. AtapattuH-Index: 13
Abstract Over the years room temperature ionic liquids have gained attention as solvents with favorable environmental and technical features. Both chromatographic and conventional methods afford suitable tools for the study of their physicochemical properties. Use of gas chromatography compared to conventional methods for the measurement of physicochemical properties of ionic liquids have several advantages; very low sample concentrations, high accuracy, faster measurements, use of wider tempera...
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Abstract The experimental activity coefficients ( γ 13 ∞ ) and gas-to-liquid partition coefficients (KL) at infinite dilution for 34 organic solutes and water were determined in 1.6-hexanediol (HDO) by the gas-liquid chromatography technique (GLC) in the temperature range from (323.15 to 353.15) K. Fundamental thermodynamic functions such as excess partial molar enthalpy ( Δ H i E , ( ∞ ) ), excess partial molar Gibbs energy, ( Δ G i E , ∞ ) and entropy, ( T ref Δ S i E , ∞ ) at infinite dilutio...
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Abstract In this research, the activity coefficients (γ13∞) at infinite dilution of 61 solutes were experimentally determined in the 1-(4-methoxy-4-oxobutyl)-3-methylimidazolium dicyanamide, [(C3COOMe)MIM][DCA]. The data were obtained using the gas-liquid chromatography technique (GLC). The experiment was carried out at a wide temperature range of (318.15 to 368.15) K, in 10 K intervals. The studied solutes included polar and non-polar compounds, as alkanes, alkenes, and alkynes, as well as arom...
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abstract This work is a continuation of the investigations on desulfurization processes, by assessing the applicability of two ionic liquids (ILs), 1-butyl-1-methylpiperidynium dicyanamide, [BMPIP][DCA] and tri-iso-butylmethylphosphonium tosylate, [Pi4,i4,i4,1][TOS], for the separation of thiophene from octane, or hexadecane. The latter two components are used as model substances of the fuel stream. Experimental liquid-liquid phase equilibrium (LLE) data were obtained for four ternary systems {I...
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ABSTRACTInverse gas chromatography was used to measure infinite dilution activity coefficients and gas-to-liquid partition coefficients for 48 organic solute probes in either 1-sec-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide or 1-tert-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide in the temperature range from 323.15 to 373.15 K. Partial molar excess enthalpies of solution were calculated from the variation of the infinite dilution activity coefficients with temperat...
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#1Noemí Delgado-Mellado (Complutense University of Madrid)H-Index: 12
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Abstract The separation of olefins/paraffins is a challenge for the petrochemical industry due to the close boiling points of these hydrocarbons. In this work we have studied the feasibility of different imidazolium and pyridinium-based ionic liquids (ILs) as alternative solvents in the cyclohexane/cyclohexene separation. Five ILs have been studied, namely 1-butyl-4-methylpyridinium tricyanomethanide ([4bmpy][TCM]), bis(1-ethyl-3-methylimidazolium) tetrathiocyanatocobaltate ([emim]2[Co(SCN)4]), ...
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