Topic
Non-random two-liquid model
About: Non-random two-liquid model is a research topic. Over the lifetime, 3669 publications have been published within this topic receiving 67813 citations. The topic is also known as: NRTL.
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TL;DR: In this article, the selectivity and capacity of the ionic liquids for extracting toluene from a mixture of an aromatic and an aliphatic polycyclic hydrocarbon was evaluated.
Abstract: This study focuses on the use of an ionic liquid for extracting an aromatic hydrocarbon from a mixture of an aromatic and an aliphatic hydrocarbon. Liquid−liquid equilibrium data were collected for the toluene + heptane + 1-ethyl-3-methylimidazolium triiodide system at 45 °C and for the toluene + heptane + 1-butyl-3-methylimidazolium triiodide system at 35 °C. The nonrandom two-liquid (NRTL) physical thermodynamic model was used to correlate the experimental data. The NRTL model was found to represent the data very well. The selectivity and capacity of the ionic liquids for extracting toluene from toluene + heptane solutions were evaluated. The separation factors were found to be above 50 for low toluene compositions and nearly unity for high toluene compositions.
176 citations
TL;DR: In this article, the suitability of a new pyridinium ionic liquid as solvent in the extraction of sulfur- and nitrogen-containing compounds from fuels has been analyzed, and the equilibrium data for 1-hexyl-3,5-dimethyl pyrinium {bis[trifluoromethylsulfonyl]imide}+thiophene+n-hexane or n-dodecane or N-hexadecane ternary systems have been determined at 298.15 K and atmospheric pressure.
173 citations
01 Jan 1977
TL;DR: In this paper, the authors present a computerized compilation of binary and multicomponent vapor-liquid equilibrium data as an aid in designing separation processes involving organic fluids, including all experimentally determined values published up to 1975, but also values calculated by the NRTL (H.M. Prausnitz) and UNIQUAC (D.S. Abrams, J.J. van Laar, and G.M Wilson).
Abstract: West Germany's Universitaet Dortmund presents a computerized compilation of binary and multicomponent vapor-liquid equilibrium data as an aid in designing separation processes involving organic fluids. The data tables include not only all experimentally determined values published up to 1975, but also values calculated by the NRTL (H. Renon, J.M. Prausnitz) and UNIQUAC (D.S. Abrams, J.M. Prausnitz) correlation equations and formulas derived by M. Margules, J.J. van Laar, and G.M. Wilson. The tables also contain parameters for these equations and the constants of the Antoine vapor-pressure equation for pure compounds.
173 citations
TL;DR: In this article, the phase equilibria of different ternary systems involving hydrocarbons present in gasoline formulations, thiophene, and [C8mim][BF4], were obtained experimentally.
Abstract: Increased reductions of statutory sulfur content on fossil fuels as gasoline or diesel have led to intense research into all possible methods of desulfurization. With the aim to study [C8mim][BF4] ionic liquid as extraction solvent for desulfurization, the phase equilibria of different ternary systems involving hydrocarbons present in gasoline formulations, thiophene, and [C8mim][BF4], were obtained experimentally. Potential interest of this ionic liquid for desulfurization was confirmed by the phase equilibria determined. As design of a multistage separation process requires knowledge of phase equilibria, simultaneous correlation of liquid-liquid equilibrium data was done using the nonrandom two liquid (NRTL) activity coefficient model. A gasoline formulation was simulated as a mixture of n-hexane, cyclohexane, iso-octane, and toluene with thiophene and dibezothiophene as sulfur-components, and its desulfurization was performed by multistage extraction using the ionic liquid in three successive stages. © 2007 American Institute of Chemical Engineers.
170 citations
TL;DR: In this paper, the authors used the Electrolyte Nonrandom Two-Liquid activity coefficient model to develop a rigorous and thermodynamically consistent representation for the MDEA−H2O−CO2 system.
170 citations