Liquid−Liquid Equilibrium in Systems with an Ionic Liquid: Experimental Data for an Example of the Biphasic Acid Scavenging Utilizing Ionic Liquids Process

2010 ◽  
Vol 55 (11) ◽  
pp. 4903-4906 ◽  
Author(s):  
Katya Sahandzhieva ◽  
Deyan Naydenov ◽  
Álvaro Pérez-Salado Kamps ◽  
Hans-Jörg Bart ◽  
Gerd Maurer
Keyword(s):  
Experimental Data ◽  
Ionic Liquid ◽  
Ionic Liquids ◽  
Liquid Equilibrium

Neat ionic liquids versus ionic liquid mixtures: a combination of experimental data and molecular simulation

2019 ◽  
Vol 21 (42) ◽  
pp. 23305-23309 ◽  
Author(s):  
Andreia S. L. Gouveia ◽  
Carlos E. S. Bernardes ◽  
Elena I. Lozinskaya ◽  
Alexander S. Shaplov ◽  
José N. Canongia Lopes ◽  
...  
Keyword(s):  
Experimental Data ◽  
Ionic Liquid ◽  
Ionic Liquids ◽  
Molecular Simulation ◽  
Liquid Mixtures

Simple mixtures of ionic liquids (IL–IL mixtures) can become a promising approach for the substitution of task-specific ILs.

Dynamic wetting of imidazolium-based ionic liquids on gold and glass

2018 ◽  
Vol 20 (3) ◽  
pp. 2084-2093 ◽  
Author(s):  
I. Delcheva ◽  
D. A. Beattie ◽  
J. Ralston ◽  
M. Krasowska
Keyword(s):  
Experimental Data ◽  
Ionic Liquid ◽  
Ionic Liquids ◽  
Dynamic Wetting

Experimental data and theoretical fitting for ionic liquid wetting on application-relevant substrates.

Solid–liquid equilibria in systems [Cxmim][Tf2N] with diethylamine

2015 ◽  
Vol 87 (5) ◽  
pp. 453-460 ◽  
Author(s):  
Jan Rotrekl ◽  
Pavel Vrbka ◽  
Zuzana Sedláková ◽  
Zdeněk Wagner ◽  
Johan Jacquemin ◽  
...  
Keyword(s):  
Differential Scanning Calorimetry ◽  
Ionic Liquid ◽  
Ionic Liquids ◽  
Phase Equilibrium ◽  
Binary System ◽  
Activity Coefficients ◽  
Liquid Equilibrium ◽  
Scanning Calorimetry ◽  
Solid Liquid ◽  
System 1

AbstractIn the present work, the solid–liquid–liquid equilibrium in the binary system of diethylamine (1) and ionic liquid (2) 1-methyl-3-ethylimidazolium bis(trifluoromethylsulfonyl)imide and solid–liquid equilibrium in system 1-methyl-3-butylimidazolium bis(trifluoromethylsulfonyl)imide was studied. Phase equilibrium was determined experimentally by means of a polythermic method. These data were then used to determine the activity coefficients for both ionic liquids. For the pure diethylamine the enthalpy of fusion was determined by differential scanning calorimetry, because to the best of our knowledge, this data is not yet reported in the open literature, a contrario of pure ionic liquids tested during this work.

scholarly journals Vapor-liquid equilibrium of the ionic liquid 7-methyl-1,5,7-triazabicyclo[4.4.0]dec-5-enium acetate and its mixtures with water

2019 ◽  
Author(s):  
Zachariah Baird ◽  
Petri Uusi-Kyyny ◽  
Ville Alopaeus ◽  
Joanna Witos ◽  
Antti Rantamäki ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Raw Materials ◽  
Stoichiometric Ratio ◽  
Protic Ionic Liquids ◽  
Liquid Equilibrium ◽  
Protic Ionic Liquid ◽  
Vapor Liquid Equilibrium ◽  
Acid And Base ◽  
Vapor Liquid

Ionic liquids have the potential to be used for extracting valuable chemicals from raw materials. These processes often involve water, and after extraction the water, or other chemicals, must be removed from the ionic liquid so it can be reused. To help in designing such processes, we present data on the vapor-liquid equilibrium of the system containing the protic ionic liquid 7-methyl-1,5,7-triazabicyclo[4.4.0]dec-5-enium acetate, water, acetic acid, and 7-methyl-1,5,7-triazabicyclo[4.4.0]dec-5-ene. Earlier studies have only focused on mixtures of water and an ionic liquid with a stoichiometric ratio of the ions. Here we also investigated mixtures containing an excess of the acid or base component because in real systems with protic ionic liquids the amount of acid and base in the mixture can vary. We modeled the data using both the ePC-SAFT and NRTL models, and we compared the performance of different modeling strategies. We also experimentally determined the vapor composition for a few of the samples, but none of the modeling strategies tested could accurately predict the concentration of the acid and base components in the vapor phase.

The properties of residual water molecules in ionic liquids: a comparison between direct and inverse Kirkwood–Buff approaches

2017 ◽  
Vol 19 (29) ◽  
pp. 18924-18937 ◽  
Author(s):  
Takeshi Kobayashi ◽  
Joshua E. S. J. Reid ◽  
Seishi Shimizu ◽  
Maria Fyta ◽  
Jens Smiatek
Keyword(s):  
Experimental Data ◽  
Molecular Dynamics ◽  
Ionic Liquid ◽  
Ionic Liquids ◽  
Molecular Dynamics Simulations ◽  
Liquid Mixtures ◽  
Water Molecules ◽  
Residual Water ◽  
Dynamics Simulations

Atomistic molecular dynamics simulations of aqueous ionic liquid mixtures were performed in order to compare the resulting Kirkwood–Buff integrals with experimental data and the corresponding integrals derived by an inverse Kirkwood–Buff approach.

Mapping the “Extra Solvent Power, ESP” of Ionic Liquids for Monomers, Polymers and Globular Nanoparticles

2017 ◽  
Author(s):  
Jose A. Pomposo
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Linear Polymers ◽  
Green Solvents ◽  
Ionic Polymers ◽  
First Time ◽  
Solvent Power

Understanding the miscibility behavior of ionic liquid (IL) / monomer, IL / polymer and IL / nanoparticle mixtures is critical for the use of ILs as green solvents in polymerization processes, and to rationalize recent observations concerning the superior solubility of some proteins in ILs when compared to standard solvents. In this work, the most relevant results obtained in terms of a three-component Flory-Huggins theory concerning the “Extra Solvent Power, ESP” of ILs when compared to traditional non-ionic solvents for monomeric solutes (case I), linear polymers (case II) and globular nanoparticles (case III) are presented. Moreover, useful ESP maps are drawn for the first time for IL mixtures corresponding to case I, II and III. Finally, a potential pathway to improve the miscibility of non-ionic polymers in ILs is also proposed.

Dynamics of Ion Locking in Doubly Polymerized Ionic Liquids

2020 ◽  
Author(s):  
Swati Arora ◽  
Julisa Rozon ◽  
Jennifer Laaser
Keyword(s):  
Dielectric Constant ◽  
Ionic Liquid ◽  
Ionic Liquids ◽  
Ion Pairs ◽  
Polymer Chains ◽  
Ion Motion ◽  
Charged Species ◽  
Broadband Dielectric Spectroscopy ◽  
Covalently Linked ◽  
Insight Into

<div>In this work, we investigate the dynamics of ion motion in “doubly-polymerized” ionic liquids (DPILs) in which both charged species of an ionic liquid are covalently linked to the same polymer chains. Broadband dielectric spectroscopy is used to characterize these materials over a broad frequency and temperature range, and their behavior is compared to that of conventional “singly-polymerized” ionic liquids (SPILs) in which only one of the charged species is attached to the polymer chains. Polymerization of the DPIL decreases the bulk ionic conductivity by four orders of magnitude relative to both SPILs. The timescales for local ionic rearrangement are similarly found to be approximately four orders of magnitude slower in the DPILs than in the SPILs, and the DPILs also have a lower static dielectric constant. These results suggest that copolymerization of the ionic monomers affects ion motion on both the bulk and the local scales, with ion pairs serving to form strong physical crosslinks between the polymer chains. This study provides quantitative insight into the energetics and timescales of ion motion that drive the phenomenon of “ion locking” currently under investigation for new classes of organic electronics.</div>

Properties of Refrigerants from Cubic Equations of State

2008 ◽  
Vol 59 (5) ◽  
Author(s):  
Viorel Feroiu ◽  
Dan Geana ◽  
Catinca Secuianu
Keyword(s):  
Experimental Data ◽  
Vapor Pressure ◽  
Equations Of State ◽  
Ternary Mixtures ◽  
Volumetric Properties ◽  
Mixing Rules ◽  
Saturation Curve ◽  
Equilibrium Thermodynamic ◽  
Liquid Equilibrium ◽  
Binary And Ternary Mixtures

Vapour � liquid equilibrium, thermodynamic and volumetric properties were predicted for three pure hydrofluorocarbons: difluoromethane (R32), pentafluoroethane (R125) and 1,1,1,2 � tetrafluoroethane (R134a) as well as for binary and ternary mixtures of these refrigerants. Three cubic equations of state GEOS3C, SRK (Soave � Redlich � Kwong) and PR (Peng � Robinson) were used. A wide comparison with literature experimental data was made. For the refrigerant mixtures, classical van der Waals mixing rules without interaction parameters were used. The GEOS3C equation, with three parameters estimated by matching several points on the saturation curve (vapor pressure and corresponding liquid volumes), compares favorably to other equations in literature, being simple enough for applications.

Ionic Liquid Assisted Synthesis of Some 2-Aminobenzenethiols

2019 ◽  
Vol 16 (7) ◽  
pp. 550-555
Author(s):  
Dinesh K. Jangid ◽  
Keshav L. Ameta ◽  
Surbhi Dhadda ◽  
Anjali Guleria ◽  
Prakash G. Goswami ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Comparative Study ◽  
Maximum Yield ◽  
Efficient Synthesis ◽  
Target Molecules ◽  
Presence And Absence

Ionic Liquid assisted efficient synthesis of some 2-aminobenzenethiols has been reported using three different Ionic Liquids (ILs) namely methylimidazolium tetrafluoroborate [MIM]+[BF4]−, methylimidazolium chloride [MIM]+[Cl]− and methylimidazolium nitrate [MIM]+[NO3]−. A comparative study has been carried out for the synthesis of target molecules in the presence and absence of IL, leading to conclusion that maximum yield has been observed with [MIM]+[BF4]−.

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