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Harris KR, Kanakubo M. Effect of pressure on the transport properties of 1-hexyl-3-methylimidazolium bis(trifluoromethylsulfonyl)amide and 1-hexyl-3-methylimidazolium tetrafluoroborate. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.119109] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Harris KR. Comment on "Ionic Conductivity, Diffusion Coefficients, and Degree of Dissociation in Lithium Electrolytes, Ionic Liquids, and Hydrogel Polyelectrolytes". J Phys Chem B 2018; 122:10964-10967. [PMID: 30419161 DOI: 10.1021/acs.jpcb.8b08610] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kenneth R Harris
- School of Physical, Environmental and Mathematical Sciences , University of New South Wales , P.O. Box 7916, Canberra , BC ACT 2610 , Australia
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Wolff L, Jamali SH, Becker TM, Moultos OA, Vlugt TJH, Bardow A. Prediction of Composition-Dependent Self-Diffusion Coefficients in Binary Liquid Mixtures: The Missing Link for Darken-Based Models. Ind Eng Chem Res 2018. [DOI: 10.1021/acs.iecr.8b03203] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ludger Wolff
- Institute of Technical Thermodynamics, RWTH Aachen University, 52056 Aachen, Germany
| | - Seyed Hossein Jamali
- Engineering Thermodynamics, Process & Energy Department, Faculty of Mechanical, Maritime and Materials Engineering, Delft University of Technology, Leeghwaterstraat 39, 2628CB Delft, The Netherlands
| | - Tim M. Becker
- Engineering Thermodynamics, Process & Energy Department, Faculty of Mechanical, Maritime and Materials Engineering, Delft University of Technology, Leeghwaterstraat 39, 2628CB Delft, The Netherlands
| | - Othonas A. Moultos
- Engineering Thermodynamics, Process & Energy Department, Faculty of Mechanical, Maritime and Materials Engineering, Delft University of Technology, Leeghwaterstraat 39, 2628CB Delft, The Netherlands
| | - Thijs J. H. Vlugt
- Engineering Thermodynamics, Process & Energy Department, Faculty of Mechanical, Maritime and Materials Engineering, Delft University of Technology, Leeghwaterstraat 39, 2628CB Delft, The Netherlands
| | - André Bardow
- Institute of Technical Thermodynamics, RWTH Aachen University, 52056 Aachen, Germany
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Rauber D, Philippi F, Zapp J, Kickelbick G, Natter H, Hempelmann R. Transport properties of protic and aprotic guanidinium ionic liquids. RSC Adv 2018; 8:41639-41650. [PMID: 35559272 PMCID: PMC9091945 DOI: 10.1039/c8ra07412g] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2018] [Accepted: 11/16/2018] [Indexed: 12/03/2022] Open
Abstract
Ionic liquids (ILs) are a promising class of solvents, functional fluids and electrolytes that are of high interest for both basic as well as applied research. For further fundamental understanding of ILs and a successful implementation in technical processes, a deeper insight into transport properties and their interrelations is of particular importance. In this contribution we synthesised a series of mostly novel protic and aprotic ILs based on the tetramethylguanidinium (TMG) cation that is a derivative of the superbase guanidine. Different substitution patterns and anions from acids with broadly varied pKa values were investigated. We measured general properties, such as thermal transitions and densities of these ILs, as well as their transport quantities by means of rheology, impedance spectroscopy and NMR diffusometry. Different models for the correlation of the transport properties, namely the Nernst–Einstein, Walden and Stokes–Einstein–Sutherland relations were applied. The deviation from ideal behaviour of fully dissociated electrolytes, often termed as ionicity, was quantified by the reciprocal Haven ratio, fractional Walden rule and ionicity obtained from the Walden plot. Velocity cross-correlation coefficients were calculated to gain further insight into the correlation between ion movements. Both protic and aprotic TMG ILs show transport properties comparable to other ILs with similar molecular weight and high ionicity values especially in contrast to other protic ILs. Lowest ionicity values were found for the protic ILs with smallest ΔpKa values between constituting acid and base. This can either be explained by stronger hydrogen bonding between cation and anion or lower anti-correlations between the oppositely charged ions. These results aim to provide insight into the properties of this interesting cations class and a deeper understanding of the transport properties of ILs and their interrelations in general. New protic and aprotic ionic liquids based on superbase cations show promising properties and enrich the field of cation classes![]()
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Affiliation(s)
- Daniel Rauber
- Physical Chemistry
- Saarland University
- 66123 Saarbrücken
- Germany
- Transfercenter Sustainable Electrochemistry
| | | | - Josef Zapp
- Pharmaceutical Biology
- Saarland University
- 66123 Saarbrücken
- Germany
| | - Guido Kickelbick
- Inorganic Solid State Chemistry
- Saarland University
- 66123 Saarbrücken
- Germany
| | - Harald Natter
- Physical Chemistry
- Saarland University
- 66123 Saarbrücken
- Germany
- Transfercenter Sustainable Electrochemistry
| | - Rolf Hempelmann
- Physical Chemistry
- Saarland University
- 66123 Saarbrücken
- Germany
- Transfercenter Sustainable Electrochemistry
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Harris KR. Can the Transport Properties of Molten Salts and Ionic Liquids Be Used To Determine Ion Association? J Phys Chem B 2016; 120:12135-12147. [DOI: 10.1021/acs.jpcb.6b08381] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kenneth R. Harris
- School of Physical, Environmental,
and Mathematical Sciences, University College, University of New South Wales, PO Box
7916, Canberra, BC ACT 2610, Australia
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Harris KR, Kanakubo M. Self-diffusion, velocity cross-correlation, distinct diffusion and resistance coefficients of the ionic liquid [BMIM][Tf2N] at high pressure. Phys Chem Chem Phys 2015; 17:23977-93. [DOI: 10.1039/c5cp04277a] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Distinct diffusion coefficients for 1-alkyl-3-imidazolium [Tf2N] salts show very similar viscosity dependence; thermodynamic scaling parameters for the reduced transport properties are equal.
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Affiliation(s)
- Kenneth R. Harris
- School of Physical
- Environmental and Mathematical Sciences
- University College
- University of New South Wales
- Canberra BC
| | - Mitsuhiro Kanakubo
- National Institute of Advanced Industrial Science and Technology (AIST)
- Sendai 983-8551
- Japan
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Hertz HG. An Alternative to Arrhenius: A Definition of Ionic Species Avoiding the Concept of the Electric Charge. Z PHYS CHEM 2011. [DOI: 10.1524/zpch.1982.1982.suppl_1.117] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Hertz HG, Mazitov R. An Attempt to Detect Higher Ion-Ion Correlations (Microheterogeneity) in Aqueous Solutions of Rb and Cs Halides. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/bbpc.19810851205] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Hertz HG. A New Estimate of the H+ Ion Concentration in Pure Water. Part 2. Numerical Results and a New Interpretation of the Limiting Equivalent Conductance of HCI. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/bbpc.19800840704] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Hertz HG. Velocity Correlations in Aqueous Electrolyte Solutions from Diffusion, Conductance, and Transference Data. Part 1, Theory. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/bbpc.19770810707] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Dufrêche JF, Bernard O, Turq P. Transport equations for concentrated electrolyte solutions: Reference frame, mutual diffusion. J Chem Phys 2002. [DOI: 10.1063/1.1427724] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Weing�rtner H, Braun BM, Schmoll JM. Determination of transference numbers with ion-selective electrodes. Transference numbers and activity coefficients of concentrated aqueous solutions of potassium fluoride. J SOLUTION CHEM 1987. [DOI: 10.1007/bf00648593] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Friedman HL, Mills R. Hydrodynamic approximation for distinct diffusion coefficients. J SOLUTION CHEM 1986. [DOI: 10.1007/bf00646311] [Citation(s) in RCA: 27] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Thacher TS, Lin J, Mou CY. Theory of Onsager phenomenological coefficients for isothermal linear transport processes in electrolyte solutions. J Chem Phys 1984. [DOI: 10.1063/1.447828] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Friedman HL, Mills R. Velocity cross correlations in binary mixtures of simple fluids. J SOLUTION CHEM 1981. [DOI: 10.1007/bf00658008] [Citation(s) in RCA: 34] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Holz M, Radwan J. Nuclear Magnetic Resonance as a New Method for the Detection of Moving Boundaries in Transference Number Measurements. ACTA ACUST UNITED AC 1981. [DOI: 10.1524/zpch.1981.125.1.049] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Velocity correlations in aqueous electrolyte solutions from diffusion, conductance and transference data: Application to concentrated solutions of nickel chloride and magnesium chloride. J SOLUTION CHEM 1981. [DOI: 10.1007/bf00644991] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Phang S, Stokes RH. Density, viscosity, conductance, and transference number of concentrated aqueous magnesium chloride at 25°C. J SOLUTION CHEM 1980. [DOI: 10.1007/bf00647738] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Tracer (self)-diffusion of potassium ion in NaCl?KCl?H2O mixtures at 25�C. J SOLUTION CHEM 1980. [DOI: 10.1007/bf00644480] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Density, conductance, transference numbers, and diffusion measurements in concentrated solutions of nickel chloride at 25�C. J SOLUTION CHEM 1979. [DOI: 10.1007/bf00655205] [Citation(s) in RCA: 32] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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