1
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Tang C, Saielli G, Wang Y. Influence of Anion Species on Liquid-Liquid Phase Separation in [EMIm +][X -]/Benzene Mixtures. J Phys Chem B 2023. [PMID: 38031410 DOI: 10.1021/acs.jpcb.3c06205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2023]
Abstract
When a molar excess of benzene is mixed with an ionic liquid (IL), liquid-liquid phase separation may appear with a pure liquid phase almost composed of only benzene molecules separated from a liquid clathrate phase with benzene molecules dissolved in the IL. Our previous study (J. Phys. Chem. B, 124, 7929, 2020) on long-chain IL/benzene systems has concluded that benzene molecules, as planar nonpolar ones, majorly dissolve in the IL nonpolar domains consisting of cationic alkyl side chains. Nevertheless, the above mechanism is inadequate for explaining the experimental observations that benzene can also dissolve in IL systems with very short alkyl side chains. In this study, by molecular dynamics simulation of the [EMIm+][X-]/benzene mixtures with X- being Cl-, NO3-, PF6-, or Tf2N-, we still observe liquid-liquid phase separation of the pure benzene phase from a liquid clathrate (mixed IL/benzene) phase where benzene molecules are almost equally distributed near imidazolium rings through π-stacking or near alkyl side chains. The anion species strongly influences the solubility of benzene and the ratio of the two liquid phases via the alteration of anionic charge density, which tunes the strength of the electrostatic interaction among ions and thus the probability of benzene molecules interacting with both imidazolium rings and alkyl side chains: a larger anionic charge density corresponds to a lower solubility of benzene.
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Affiliation(s)
- Chenyu Tang
- CAS Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100190, China
- School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Giacomo Saielli
- CNR Institute on Membrane Technology, Unit of Padova, Via Marzolo, Padova 1-35131, Italy
- Department of Chemical Sciences, University of Padova, Via Marzolo, Padova 1-35131, Italy
| | - Yanting Wang
- CAS Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100190, China
- School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
- Center for Theoretical Interdisciplinary Sciences, Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou 325001, China
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2
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Polishuk I, Chiko A, Cea-Klapp E, Matías Garrido J. Simultaneous prediction of vapor-liquid and liquid-liquid phase equilibria in systems of ionic liquids belonging to [Cnmim][BF4] and [Cnmim][PF6] families by CP-PC-SAFT and SAFT-VR-Mie with universal kij values. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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3
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Bandlamudi SRP, McGehee JL, Mando AD, Soltani M, Turner CH, Davis JH, West KN, Rabideau BD. Understanding liquid–liquid equilibria in binary mixtures of hydrocarbons with a thermally robust perarylphosphonium-based ionic liquid. RSC Adv 2021; 11:31328-31338. [PMID: 35496850 PMCID: PMC9041297 DOI: 10.1039/d1ra06268a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Accepted: 09/14/2021] [Indexed: 11/28/2022] Open
Abstract
Binary mixtures of hydrocarbons and a thermally robust ionic liquid (IL) incorporating a perarylphosphonium-based cation are investigated experimentally and computationally. Experimentally, it is seen that excess toluene added to the IL forms two distinct liquid phases, an “ion-rich” phase of fixed composition and a phase that is nearly pure toluene. Conversely, n-heptane is observed to be essentially immiscible in the neat IL. Molecular dynamics simulations capture both of these behaviours. Furthermore, the simulated composition of the toluene-rich IL phase is within 10% of the experimentally determined composition. Additional simulations are performed on the binary mixtures of the IL and ten other small hydrocarbons having mixed aromatic/aliphatic character. It is found that hydrocarbons with a predominant aliphatic character are largely immiscible with the IL, while those with a predominant aromatic character readily mix with the IL. A detailed analysis of the structure and energetic changes that occur on mixing reveals the nature of the ion-rich phase. The simulations show a bicontinuous phase with hydrocarbon uptake akin to absorption and swelling by a porous absorbent. Aromatic hydrocarbons are driven into the neat IL via dispersion forces with the IL cations and, to a lesser extent, the IL anions. The ion–ion network expands to accommodate the hydrocarbons, yet maintains a core connective structure. At a certain loading, this network becomes stretched to its limit. The energetic penalty associated with breaking the core connective network outweighs the gain from new hydrocarbon–IL interactions, leaving additional hydrocarbons in the neat phase. The spatially alternating charge of the expanded IL network is shown to interact favourably with the stacked aromatic subphase, something not possible for aliphatic hydrocarbons. Binary mixtures of hydrocarbons and a thermally robust ionic liquid (IL) incorporating a perarylphosphonium-based cation are investigated experimentally and computationally.![]()
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Affiliation(s)
- Santosh R. P. Bandlamudi
- Department of Chemical & Biomolecular Engineering, The University of South Alabama, Mobile, Alabama 36688, USA
| | - Jimmie L. McGehee
- Department of Chemical & Biomolecular Engineering, The University of South Alabama, Mobile, Alabama 36688, USA
| | - Albaraa D. Mando
- Department of Chemical & Biomolecular Engineering, The University of South Alabama, Mobile, Alabama 36688, USA
| | - Mohammad Soltani
- Department of Chemistry, The University of South Alabama, Mobile, Alabama 36688, USA
| | - C. Heath Turner
- Department of Chemical & Biological Engineering, The University Alabama, Tuscaloosa, Alabama 35487, USA
| | - James H. Davis
- Department of Chemistry, The University of South Alabama, Mobile, Alabama 36688, USA
| | - Kevin N. West
- Department of Chemical & Biomolecular Engineering, The University of South Alabama, Mobile, Alabama 36688, USA
| | - Brooks D. Rabideau
- Department of Chemical & Biomolecular Engineering, The University of South Alabama, Mobile, Alabama 36688, USA
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4
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Butt HS, Lethesh KC, Fiksdahl A. Fuel oil desulfurization with dual functionalized imidazolium based ionic liquids. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2020.116959] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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5
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Kore R, Mishra MK, Gonela UM, Rogers RD. Chloroaluminate Liquid Clathrates: Is It the Cations or the Anions That Drive the Solubility of Aromatics? Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.0c03980] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Rajkumar Kore
- College of Arts & Sciences, The University of Alabama, Tuscaloosa, Alabama 35487, United States
| | - Manish Kumar Mishra
- College of Arts & Sciences, The University of Alabama, Tuscaloosa, Alabama 35487, United States
| | - Uma Maheshwar Gonela
- College of Arts & Sciences, The University of Alabama, Tuscaloosa, Alabama 35487, United States
| | - Robin D. Rogers
- College of Arts & Sciences, The University of Alabama, Tuscaloosa, Alabama 35487, United States
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6
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Lubben MJ, Canales RI, Lyu Y, Held C, Gonzalez-Miquel M, Stadtherr MA, Brennecke JF. Promising Thiolanium Ionic Liquid for Extraction of Aromatics from Aliphatics: Experiments and Modeling. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.0c02292] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Michael J. Lubben
- McKetta Department of Chemical Engineering, University of Texas at Austin, Austin, Texas 78712, United States
| | - Roberto I. Canales
- Departamento de Ingeniería Química y Bioprocesos, Pontificia Universidad Católica de Chile, Avenida Vicuña Mackenna 4860, Macul, Santiago 7820436, Chile
- Millennium Nuclei on Catalytic Processes towards Sustainable Chemistry (CSC), Santiago 7810000, Chile
| | - Yuanyuan Lyu
- McKetta Department of Chemical Engineering, University of Texas at Austin, Austin, Texas 78712, United States
| | - Christoph Held
- Laboratory of Thermodynamics, Department of Biochemical and Chemical Engineering, Technische Universität Dortmund, Emil-Figge-Straße 70, 44227 Dortmund, Germany
| | - Maria Gonzalez-Miquel
- Departamento de Ingeniería Química Industrial y del Medioambiente, Escuela Técnica Superior de Ingenieros Industriales, Universidad Politécnica de Madrid, José Gutiérrez Abascal 2, 28006 Madrid, Spain
| | - Mark A. Stadtherr
- McKetta Department of Chemical Engineering, University of Texas at Austin, Austin, Texas 78712, United States
| | - Joan F. Brennecke
- McKetta Department of Chemical Engineering, University of Texas at Austin, Austin, Texas 78712, United States
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7
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Photophysics and rotational dynamics of Nile red in room temperature ionic liquid (RTIL) and RTIL-cosolvents binary mixtures. J Photochem Photobiol A Chem 2020. [DOI: 10.1016/j.jphotochem.2020.112550] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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8
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Kore R, Kelley SP, Sawant AD, Mishra MK, Rogers RD. Are ionic liquids and liquid coordination complexes really different? - Synthesis, characterization, and catalytic activity of AlCl 3/base catalysts. Chem Commun (Camb) 2020; 56:5362-5365. [PMID: 32285899 DOI: 10.1039/d0cc01452d] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Lewis acid/base catalysts of AlCl3/N-methyl-2-pyrrolidone (O-NMP) and AlCl3/1-methylimidazole (N-Mim) were prepared and found to have higher catalytic activity in the Friedel-Crafts alkylation of benzene than the known super acidic ionic liquid chloroaluminate [HN222][Al2Cl7] ([HN222]+ = triethylammonium). Crystals structures were obtained for AlCl3(N-Mim), [AlCl2(O-NMP)2][AlCl4], and [Al(O-NMP)6][AlCl4]3·(C6H6)3 supporting the assignments of neutral and charged catalytic species.
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Affiliation(s)
- Rajkumar Kore
- College of Arts & Sciences, The University of Alabama, Tuscaloosa, AL 35487, USA.
| | - Steven P Kelley
- College of Arts & Sciences, The University of Alabama, Tuscaloosa, AL 35487, USA.
| | - Anand D Sawant
- College of Arts & Sciences, The University of Alabama, Tuscaloosa, AL 35487, USA.
| | - Manish Kumar Mishra
- College of Arts & Sciences, The University of Alabama, Tuscaloosa, AL 35487, USA.
| | - Robin D Rogers
- College of Arts & Sciences, The University of Alabama, Tuscaloosa, AL 35487, USA. and 525 Solutions, Inc., P.O. Box 2206, Tuscaloosa, AL 35403, USA
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9
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How imidazolium‐based ionic liquids solubilize the poorly soluble ibuprofen? A theoretical study. AIChE J 2020. [DOI: 10.1002/aic.16940] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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10
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Delgado-Mellado N, García J, Rodríguez F, Rogers RD. Insights into Ionic Liquid/Aromatic Systems from NMR Spectroscopy: How Water Affects Solubility and Intermolecular Interactions. Chempluschem 2020; 84:872-881. [PMID: 31943992 DOI: 10.1002/cplu.201900192] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Revised: 05/18/2019] [Indexed: 11/08/2022]
Abstract
Hydrocarbon solubility and chemical interactions in ten imidazolium- and pyridinium-based ionic liquids (ILs) with four different anions (thiocyanate [SCN]- , dicyanamide [DCA]- , tricyanomethanide [TCM]- , and bis(trifuoromethylsulfonyl)imide [NTf2 ]- ) have been studied by 1 H and 13 C NMR spectroscopy. The anion structure has the main influence on the anion-aromatic chemical interaction strength; it is directly correlated to the NMR chemical shift deviations but not to the hydrocarbon solubility. The [TCM]- anion shows the largest chemical shift deviations, but the [NTf2 ]- anion has the highest hydrocarbon solubility due to steric effects. Higher water contents decrease the hydrocarbon solubility in ILs. Ion-water solvation mainly occurs until 1 molwater /molIL with the saturation limit at 10 molwater /molIL . Toluene-ion interactions are stronger than water-ion interactions in [DCA]- and [TCM]- -based ILs, but they have a similar or even lower strength in [SCN]- -based ILs.
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Affiliation(s)
- Noemí Delgado-Mellado
- College of Arts and Sciences, The University of Alabama, Tuscaloosa, AL 35487, USA.,Department of Chemical Engineering, Universidad Complutense de Madrid, 28040, Madrid, Spain
| | - Julián García
- Department of Chemical Engineering, Universidad Complutense de Madrid, 28040, Madrid, Spain
| | - Francisco Rodríguez
- Department of Chemical Engineering, Universidad Complutense de Madrid, 28040, Madrid, Spain
| | - Robin D Rogers
- College of Arts and Sciences, The University of Alabama, Tuscaloosa, AL 35487, USA
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11
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Bara JE, Finotello A, Magee JW, Qian S, O’Harra KE, Dennis GP, Noble RD. 110th Anniversary: Properties of Imidazolium-Based Ionic Liquids Bearing Both Benzylic and n-Alkyl Substituents. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.9b03159] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jason E. Bara
- Chemical & Biological Engineering, University of Alabama, Tuscaloosa, Alabama 35487-0203, United States
| | - Alexia Finotello
- Packaging and Specialty Plastics−Infrastructure, Consumer and Transportation, The Dow Chemical Company, Lake Jackson, Texas 77566, United States
| | - Joseph W. Magee
- Applied Chemicals and Materials Division, National Institute of Standards and Technology, Boulder, Colorado 80305-3337, United States
| | - Shuai Qian
- Chemical & Biological Engineering, University of Alabama, Tuscaloosa, Alabama 35487-0203, United States
| | - Kathryn E. O’Harra
- Chemical & Biological Engineering, University of Alabama, Tuscaloosa, Alabama 35487-0203, United States
| | - Grayson P. Dennis
- Chemical & Biological Engineering, University of Alabama, Tuscaloosa, Alabama 35487-0203, United States
| | - Richard D. Noble
- Chemical & Biological Engineering, University of Colorado, Boulder, Colorado 80309-0424, United States
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12
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Zhou J, Sui H, Jia Z, Yang Z, He L, Li X. Recovery and purification of ionic liquids from solutions: a review. RSC Adv 2018; 8:32832-32864. [PMID: 35547671 PMCID: PMC9086388 DOI: 10.1039/c8ra06384b] [Citation(s) in RCA: 78] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2018] [Accepted: 09/13/2018] [Indexed: 12/23/2022] Open
Abstract
With low melting point, extremely low vapor pressure and non-flammability, ionic liquids have been attracting much attention from academic and industrial fields. Great efforts have been made to facilitate their applications in catalytic processes, extraction, desulfurization, gas separation, hydrogenation, electronic manufacturing, etc. To reduce the cost and environmental effects, different technologies have been proposed to recover the ionic liquids from different solutions after their application. This review is mainly focused on the recent advances of the recovery and purification of ionic liquids from solutions. Several methods for recovery of ionic liquids including distillation, extraction, adsorption, membrane separation, aqueous two-phase extraction, crystallization and external force field separation, are introduced and discussed systematically. Some industrial applications of ionic liquid recovery and purification methods are selected for discussion. Additionally, considerations on the combined design of different methods and process optimization have also been touched on to provide potential insights for future development of ionic liquid recovery and purification.
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Affiliation(s)
- Jingjing Zhou
- School of Chemical Engineering and Technology, Tianjin University 300072 Tianjin China +86-022-27404701
- National Engineering Research Center of Distillation Technology 300072 Tianjin China
| | - Hong Sui
- School of Chemical Engineering and Technology, Tianjin University 300072 Tianjin China +86-022-27404701
- National Engineering Research Center of Distillation Technology 300072 Tianjin China
- Collaborative Innovation Center of Chemical Science and Engineering 300072 Tianjin China
| | - Zhidan Jia
- School of Chemical Engineering and Technology, Tianjin University 300072 Tianjin China +86-022-27404701
- National Engineering Research Center of Distillation Technology 300072 Tianjin China
| | - Ziqi Yang
- School of Chemical Engineering and Technology, Tianjin University 300072 Tianjin China +86-022-27404701
- National Engineering Research Center of Distillation Technology 300072 Tianjin China
| | - Lin He
- School of Chemical Engineering and Technology, Tianjin University 300072 Tianjin China +86-022-27404701
- National Engineering Research Center of Distillation Technology 300072 Tianjin China
- Collaborative Innovation Center of Chemical Science and Engineering 300072 Tianjin China
| | - Xingang Li
- School of Chemical Engineering and Technology, Tianjin University 300072 Tianjin China +86-022-27404701
- National Engineering Research Center of Distillation Technology 300072 Tianjin China
- Collaborative Innovation Center of Chemical Science and Engineering 300072 Tianjin China
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13
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González EJ, Díaz I, Gonzalez-Miquel M, Rodríguez M, Sueiras A. On the behavior of imidazolium versus pyrrolidinium ionic liquids as extractants of phenolic compounds from water: Experimental and computational analysis. Sep Purif Technol 2018. [DOI: 10.1016/j.seppur.2018.03.006] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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14
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Núñez-Rojas E, Flores-Ruiz HM, Alejandre J. Molecular dynamics simulations to separate benzene from hydrocarbons using polar and ionic liquid solvents. J Mol Liq 2018. [DOI: 10.1016/j.molliq.2017.10.147] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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15
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Saleh M, Powell DR, Wehmschulte RJ. Catalytic Reduction of Carbon Dioxide Using Cationic Organoaluminum and -Gallium Compounds. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00716] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Mahmoud Saleh
- Department
of Chemistry, Florida Institute of Technology, 150 West University Boulevard, Melbourne, Florida 32901, United States
| | - Douglas R. Powell
- Department
of Chemistry and Biochemistry, University of Oklahoma, 101 Stephenson
Parkway, Norman, Oklahoma 73019-5251, United States
| | - Rudolf J. Wehmschulte
- Department
of Chemistry, Florida Institute of Technology, 150 West University Boulevard, Melbourne, Florida 32901, United States
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16
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Kelley SP, Flores LA, Shannon MS, Bara JE, Rogers RD. Understanding Carbon Dioxide Solubility in Ionic Liquids by Exploring the Link with Liquid Clathrate Formation. Chemistry 2017; 23:14332-14337. [DOI: 10.1002/chem.201703117] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2017] [Indexed: 11/07/2022]
Affiliation(s)
- Steven P. Kelley
- Department of Chemistry McGill University 801 Sherbrooke St. W. Montreal QC H3V 1B4 Canada
| | - Luis A. Flores
- Department of Chemistry The University of Alabama Box 870336 Tuscaloosa AL 35487 USA
| | - Matthew S. Shannon
- Department of Chemical and Biological Engineering The University of Alabama Box 870203 Tuscaloosa AL 35487 USA
| | - Jason E. Bara
- Department of Chemical and Biological Engineering The University of Alabama Box 870203 Tuscaloosa AL 35487 USA
| | - Robin D. Rogers
- Department of Chemistry The University of Alabama Box 870336 Tuscaloosa AL 35487 USA
- 525 Solutions, Inc. 720 2nd St. Tuscaloosa AL 35403 USA
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17
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Kunov‐Kruse AJ, Weber CC, Rogers RD, Myerson AS. The A Priori Design and Selection of Ionic Liquids as Solvents for Active Pharmaceutical Ingredients. Chemistry 2017; 23:5498-5508. [DOI: 10.1002/chem.201605704] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2016] [Indexed: 11/12/2022]
Affiliation(s)
- Andreas J. Kunov‐Kruse
- Novartis-MIT Center for Continuous Manufacturing and Department of Chemical Engineering Massachusetts Institute of Technology 77 Massachusetts Avenue Cambridge Massachusetts 02139 USA
- Technical University of Denmark Building 207 2800 Kgs. Lyngby Denmark
| | - Cameron C. Weber
- Novartis-MIT Center for Continuous Manufacturing and Department of Chemical Engineering Massachusetts Institute of Technology 77 Massachusetts Avenue Cambridge Massachusetts 02139 USA
- School of Science Auckland University of Technology Auckland 1010 New Zealand
| | - Robin D. Rogers
- Department of Chemistry McGill University 801 Sherbrooke St. W. Montreal QC H3A 0B8 Canada
| | - Allan S. Myerson
- Novartis-MIT Center for Continuous Manufacturing and Department of Chemical Engineering Massachusetts Institute of Technology 77 Massachusetts Avenue Cambridge Massachusetts 02139 USA
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18
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Prikhod'ko SA, Shabalin AY, Bardin VV, Eltsov IV, Shundrina IK, Parmon VN, Adonin NY. 1-Alkyl-3-methylimidazolium 4-organyloxy-2,3,5,6-tetrafluorophenyltrifluoroborates as a new platform for ionic liquids with specific properties. RSC Adv 2017. [DOI: 10.1039/c7ra01709j] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
A new synthetic platform for ionic liquids (ILs) with specific properties was suggested based on the polyfluorophenyltrifluoroborate anions, Q[4-XC6F4BF3] (X = F, RO).
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Affiliation(s)
| | | | - Vadim V. Bardin
- N. N. Vorozhtsov Novosibirsk Institute of Organic Chemistry SB RAS
- 630090 Novosibirsk
- Russia
| | | | - Inna K. Shundrina
- N. N. Vorozhtsov Novosibirsk Institute of Organic Chemistry SB RAS
- 630090 Novosibirsk
- Russia
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19
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Affiliation(s)
- Shiguo Zhang
- College
of Materials Science and Engineering, Hunan University, Changsha 410082, China
- Center for Green Chemistry and Catalysis, State Key Laboratory for Oxo Synthesis & Selective Oxidation, State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, No.18, Tianshui Middle Road, 730000 Lanzhou, China
| | - Jiaheng Zhang
- School
of Materials Science and Engineering, Harbin Institute of Technology, Shenzhen 518055, China
| | - Yan Zhang
- College
of Materials Science and Engineering, Hunan University, Changsha 410082, China
| | - Youquan Deng
- Center for Green Chemistry and Catalysis, State Key Laboratory for Oxo Synthesis & Selective Oxidation, State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, No.18, Tianshui Middle Road, 730000 Lanzhou, China
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20
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Banerjee A, Dey A, Chandrakumar N. Slow Molecular Motions in Ionic Liquids Probed by Cross-Relaxation of Nuclear Spins During Overhauser Dynamic Nuclear Polarization. Angew Chem Int Ed Engl 2016; 55:14756-14761. [PMID: 27781346 DOI: 10.1002/anie.201607308] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2016] [Revised: 08/31/2016] [Indexed: 11/08/2022]
Abstract
Solution-state Overhauser dynamic nuclear polarization (ODNP) at moderate fields, performed by saturating the electron spin resonance (ESR) of a free radical added to the sample of interest, is well known to lead to significant NMR signal enhancements in the steady state, owing to electron-nuclear cross-relaxation. Here it is shown that under conditions which limit radical access to the molecules of interest, the time course of establishment of ODNP can provide a unique window into internuclear cross-relaxation, and reflects relatively slow molecular motions. This behavior, modeled mathematically by a three-spin version of the Solomon equations (one unpaired electron and two nuclear spins), is demonstrated experimentally on the 19 F/1 H system in ionic liquids. Bulky radicals in these viscous environments turn out to be just the right setting to exploit these effects. Compared to standard nuclear Overhauser effect (NOE) work, the present experiment offers significant improvement in dynamic range and sensitivity, retains usable chemical shift information, and reports on molecular motions in the sub-megahertz (MHz) to tens of MHz range-motions which are not accessed at high fields.
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Affiliation(s)
- Abhishek Banerjee
- MRI-MRS Centre and Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600036, Tamil Nadu, India
| | - Arnab Dey
- MRI-MRS Centre and Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600036, Tamil Nadu, India
| | - Narayanan Chandrakumar
- MRI-MRS Centre and Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600036, Tamil Nadu, India
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21
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Slow Molecular Motions in Ionic Liquids Probed by Cross-Relaxation of Nuclear Spins During Overhauser Dynamic Nuclear Polarization. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201607308] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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22
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Fujiwara S, Ichikawa T, Ohno H. Cation-π interactions within aromatic amino acid ionic liquids: A new tool for designing functional ionic liquids. J Mol Liq 2016. [DOI: 10.1016/j.molliq.2016.07.030] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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23
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Weber CC, Kunov-Kruse AJ, Rogers RD, Myerson AS. Manipulation of ionic liquid anion-solute-antisolvent interactions for the purification of acetaminophen. Chem Commun (Camb) 2015; 51:4294-7. [PMID: 25673089 DOI: 10.1039/c5cc00198f] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Hydrogen bond donating cosolvents have been shown to significantly reduce the solubility of acetaminophen (AAP) in ionic liquids containing the acetate anion. Reduced solubility arises from competition for solvation by the acetate anion and can be used for the design of advanced separation techniques, illustrated by the crystallization of AAP.
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Affiliation(s)
- C C Weber
- Novartis-MIT Center for Continuous Manufacturing and Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA.
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Cláudio AFM, Neves MC, Shimizu K, Canongia Lopes JN, Freire MG, Coutinho JAP. The magic of aqueous solutions of ionic liquids: ionic liquids as a powerful class of catanionic hydrotropes. GREEN CHEMISTRY : AN INTERNATIONAL JOURNAL AND GREEN CHEMISTRY RESOURCE : GC 2015; 17:3948-3963. [PMID: 26379471 PMCID: PMC4568318 DOI: 10.1039/c5gc00712g] [Citation(s) in RCA: 87] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Hydrotropes are compounds able to enhance the solubility of hydrophobic substances in aqueous media and therefore are widely used in the formulation of drugs, cleaning and personal care products. In this work, it is shown that ionic liquids are a new class of powerful catanionic hydrotropes where both the cation and the anion synergistically contribute to increase the solubility of biomolecules in water. The effects of the ionic liquid chemical structures, their concentration and the temperature on the solubility of two model biomolecules, vanillin and gallic acid were evaluated and compared with the performance of conventional hydrotropes. The solubility of these two biomolecules was studied in the entire composition range, from pure water to pure ionic liquids, and an increase in the solubility of up to 40-fold was observed, confirming the potential of ionic liquids to act as hydrotropes. Using dynamic light scattering, NMR and molecular dynamics simulations, it was possible to infer that the enhanced solubility of the biomolecule in the IL aqueous solutions is related to the formation of ionic-liquid-biomolecules aggregates. Finally, it was demonstrated that hydrotropy induced by ionic liquids can be used to recover solutes from aqueous media by precipitation, simply by using water as an anti-solvent. The results reported here have a significant impact on the understanding of the role of ionic liquid aqueous solutions in the extraction of value-added compounds from biomass as well as in the design of novel processes for their recovery from aqueous media.
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Affiliation(s)
- Ana Filipa M. Cláudio
- CICECO – Aveiro Institute of Materials, Chemistry Department, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Márcia C. Neves
- CICECO – Aveiro Institute of Materials, Chemistry Department, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Karina Shimizu
- Centro de Química Estrutural, Instituto Superior Técnico, 1049 001 Lisboa, Portugal
- Instituto de Tecnologia Química e Biológica, UNL, AV. República Ap. 127, 2780 901 Oeiras, Portugal
| | - José N. Canongia Lopes
- Centro de Química Estrutural, Instituto Superior Técnico, 1049 001 Lisboa, Portugal
- Instituto de Tecnologia Química e Biológica, UNL, AV. República Ap. 127, 2780 901 Oeiras, Portugal
| | - Mara G. Freire
- CICECO – Aveiro Institute of Materials, Chemistry Department, University of Aveiro, 3810-193 Aveiro, Portugal
| | - João A. P. Coutinho
- CICECO – Aveiro Institute of Materials, Chemistry Department, University of Aveiro, 3810-193 Aveiro, Portugal
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Horne WJ, Andrews MA, Terrill KL, Hayward SS, Marshall J, Belmore KA, Shannon MS, Bara JE. Poly(ionic liquid) superabsorbent for polar organic solvents. ACS APPLIED MATERIALS & INTERFACES 2015; 7:8979-8983. [PMID: 25893981 DOI: 10.1021/acsami.5b01921] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A simple, polymerized ionic liquid (poly(IL)) based on methylimidazolium cations tethered to a polystyrene backbone exhibits superabsorbent behavior toward polar organic solvents, most notably propylene carbonate (PC) and dimethyl sulfoxide (DMSO), wherein the poly(IL) was observed to swell more than 390 and 200 times (w/w) its original mass, yet absorbs negligible quantities of water, hexanes, and other solvents, many of which were miscible with the IL monomer. Although solubility parameters and dielectric constants are typically used to rationalize such behaviors, we find that poly(IL)-solvent compatibility is most clearly correlated to solvent dipole moment. Poly(IL) superabsorbency is not reliant upon the addition of a cross-linking agent.
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Affiliation(s)
- W Jeffrey Horne
- †Department of Chemical and Biological Engineering, University of Alabama, Tuscaloosa, Alabama 35487-0203, United States
| | - Mary A Andrews
- †Department of Chemical and Biological Engineering, University of Alabama, Tuscaloosa, Alabama 35487-0203, United States
| | - Kelsey L Terrill
- †Department of Chemical and Biological Engineering, University of Alabama, Tuscaloosa, Alabama 35487-0203, United States
| | - Spenser S Hayward
- †Department of Chemical and Biological Engineering, University of Alabama, Tuscaloosa, Alabama 35487-0203, United States
| | - Jeannie Marshall
- †Department of Chemical and Biological Engineering, University of Alabama, Tuscaloosa, Alabama 35487-0203, United States
| | - Kenneth A Belmore
- ‡Department of Chemistry, University of Alabama, Tuscaloosa, Alabama 35487-0336, United States
| | - Matthew S Shannon
- †Department of Chemical and Biological Engineering, University of Alabama, Tuscaloosa, Alabama 35487-0203, United States
| | - Jason E Bara
- †Department of Chemical and Biological Engineering, University of Alabama, Tuscaloosa, Alabama 35487-0203, United States
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Balaji S, Kannan K, Moon IS. The electrochemical oxidation of toluene catalysed by Co(ii) in N-butyl-N-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide. Phys Chem Chem Phys 2015; 17:30983-7. [DOI: 10.1039/c5cp04151a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Co(ii) catalysed electro-oxidation of toluene in room temperature ionic liquid.
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Affiliation(s)
- S. Balaji
- Department of Chemical Engineering
- Sunchon National University
- Suncheon 540-742
- South Korea
| | - K. Kannan
- Department of Chemical Engineering
- Sunchon National University
- Suncheon 540-742
- South Korea
| | - I. S. Moon
- Department of Chemical Engineering
- Sunchon National University
- Suncheon 540-742
- South Korea
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