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Jiang H, Deng K, Wang Y, Sun C. Investigation of ion association kinetics in Na 2SO 4-H 2O by excess Raman spectroscopy and 2D correlation Raman spectroscopy. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 322:124673. [PMID: 38981288 DOI: 10.1016/j.saa.2024.124673] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2024] [Revised: 06/12/2024] [Accepted: 06/17/2024] [Indexed: 07/11/2024]
Abstract
The ion association of salts aqueous solutions have long captivated the attention of researchers within the field of physical chemistry. In this paper, we have performed a comprehensive analysis of ion interactions in sodium sulfate (Na2SO4) aqueous solutions using a combination of high-resolution techniques, including excess (ERS) and two-dimensional correlation (2DCRS) Raman spectroscopy in conjunction with molecular dynamics (MD) calculations. The Raman spectrum shows that two inflection points in the Raman shift of the O-H vibration are observed with the increase in Na2SO4 concentration. Simultaneously, a new peak of the SO42- vibration appears at first inflection point, representing the formation of ion association. Further analysis based on ERS and 2CRS reveals that these two inflection points correspond respectively to the formation of ion pairs (CIPs) and small ion clusters. Importantly, MD simulations confirm the above experimental results. Our study provides evidence for ion association and clustering in aqueous in salt ion aqueous solutions.
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Affiliation(s)
- Huan Jiang
- Key Laboratory of Physics and Technology for Advanced Batteries, College of Physics, Jilin University, Changchun 130012, China; Jilin Police College, Changchun 130117, China
| | - Ke Deng
- Key Laboratory of Physics and Technology for Advanced Batteries, College of Physics, Jilin University, Changchun 130012, China
| | - Yubo Wang
- Key Laboratory of Physics and Technology for Advanced Batteries, College of Physics, Jilin University, Changchun 130012, China
| | - Chenglin Sun
- Key Laboratory of Physics and Technology for Advanced Batteries, College of Physics, Jilin University, Changchun 130012, China.
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Naseri Boroujeni S, Maribo-Mogensen B, Liang X, Kontogeorgis GM. Theoretical and practical investigation of ion-ion association in electrolyte solutions. J Chem Phys 2024; 160:154509. [PMID: 38639315 DOI: 10.1063/5.0198308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2024] [Accepted: 03/26/2024] [Indexed: 04/20/2024] Open
Abstract
In this study, we present a new equation of state for electrolyte solutions, integrating the statistical associating fluid theory for variable range interactions utilizing the generic Mie form and binding Debye-Hückel theories. This equation of state underscores the pivotal role of ion-ion association in determining the properties of electrolyte solutions. We propose a unified framework that simultaneously examines the thermodynamic properties of electrolyte solutions and their electrical conductivity, given the profound impact of ion pairing on this transport property. Using this equation of state, we predict the liquid density, mean ionic activity coefficient, and osmotic coefficient for binary NaCl, Na2SO4, and MgSO4 aqueous solutions at 298.15 K. Additionally, we evaluate the molar conductivity of these systems by considering the fraction of free ions derived from our equation of state in conjunction with two advanced electrical conductivity models. Our results reveal that, while ion-ion association has a minimal influence on the modification of the predicted properties of sodium chloride solutions, their impact on sodium and magnesium sulfate solutions is considerably more noticeable.
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Affiliation(s)
- Saman Naseri Boroujeni
- Center for Energy Resources Engineering, Department of Chemical and Biochemical Engineering, Technical University of Denmark (DTU), Søltofts Plads, Building 229, 2800 Kgs. Lyngby, Denmark
| | - B Maribo-Mogensen
- Hafnium Labs ApS., Vestergade 16, 3rd floor, 1456 Copenhagen, Denmark
| | - X Liang
- Center for Energy Resources Engineering, Department of Chemical and Biochemical Engineering, Technical University of Denmark (DTU), Søltofts Plads, Building 229, 2800 Kgs. Lyngby, Denmark
| | - G M Kontogeorgis
- Center for Energy Resources Engineering, Department of Chemical and Biochemical Engineering, Technical University of Denmark (DTU), Søltofts Plads, Building 229, 2800 Kgs. Lyngby, Denmark
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3
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The effectiveness of graphene oxide added in activated carbon for superior supercapacitor performance. J Taiwan Inst Chem Eng 2023. [DOI: 10.1016/j.jtice.2023.104684] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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Yang W, Xu D, Diao Y, Zhao J, Jing Z, Guo Y. Molecular dynamics simulations on K2SO4 nucleation in supercritical water. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120565] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Wang R, Deplazes R, Vogel F, Baudouin D. Continuous Extraction of Black Liquor Salts under Hydrothermal Conditions. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.0c05203] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Runyu Wang
- Laboratory for Bioenergy and Catalysis, Paul Scherrer Institute (PSI), 5232 Villigen PSI, Switzerland
- State Key Laboratory of Multiphase Flow in Power Engineering (SKLMF), Xi’an Jiaotong University, 28 Xianning West Road, Xi’an 710049, Shaanxi, China
| | - Roger Deplazes
- Laboratory for Bioenergy and Catalysis, Paul Scherrer Institute (PSI), 5232 Villigen PSI, Switzerland
- School of Life Sciences, University of Applied Sciences Northwestern Switzerland (FHNW), 4132 Muttenz, Switzerland
| | - Frédéric Vogel
- Laboratory for Bioenergy and Catalysis, Paul Scherrer Institute (PSI), 5232 Villigen PSI, Switzerland
- Institute of Biomass and Resource Efficiency, University of Applied Sciences Northwestern Switzerland (FHNW), 5210 Windisch, Switzerland
| | - David Baudouin
- Laboratory for Bioenergy and Catalysis, Paul Scherrer Institute (PSI), 5232 Villigen PSI, Switzerland
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Khairutdinova DR, Smirnov VV, Antonova OS, Gol’dberg MA, Smirnov SV, Obolkina TO, Barinov SM. Effect of Doping with Sodium and Potassium on the Phase Formation in the Synthesis of Calcium Sulfate. DOKLADY CHEMISTRY 2019. [DOI: 10.1134/s0012500819110028] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Lee I, Kim J, Kim D, Kim H, Hwang KB, Son H, Yoon S. Raman-spectroscopic investigation of sulfate ion concentration change in a continuously stirred tank reactor during the preparation of a cathode material precursor. Electrochim Acta 2017. [DOI: 10.1016/j.electacta.2017.06.107] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Reimer J, Vogel F, Steele-MacInnis M. Speciation and Structural Properties of Hydrothermal Solutions of Sodium and Potassium Sulfate Studied by Molecular Dynamics Simulations. Chemphyschem 2016; 17:1446-53. [PMID: 26888426 DOI: 10.1002/cphc.201600042] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2016] [Indexed: 11/06/2022]
Abstract
Aqueous solutions of salts at elevated pressures and temperatures play a key role in geochemical processes and in applications of supercritical water in waste and biomass treatment, for which salt management is crucial for performance. A major question in predicting salt behavior in such processes is how different salts affect the phase equilibria. Herein, molecular dynamics (MD) simulations are used to investigate molecular-scale structures of solutions of sodium and/or potassium sulfate, which show contrasting macroscopic behavior. Solutions of Na-SO4 exhibit a tendency towards forming large ionic clusters with increasing temperature, whereas solutions of K-SO4 show significantly less clustering under equivalent conditions. In mixed systems (Nax K2-x SO4 ), cluster formation is dramatically reduced with decreasing Na/(K+Na) ratio; this indicates a structure-breaking role of K. MD results allow these phenomena to be related to the characteristics of electrostatic interactions between K(+) and SO4 (2-) , compared with the analogous Na(+) -SO4 (2-) interactions. The results suggest a mechanism underlying the experimentally observed increasing solubility in ternary mixtures of solutions of Na-K-SO4 . Specifically, the propensity of sodium to associate with sulfate, versus that of potassium to break up the sodium-sulfate clusters, may affect the contrasting behavior of these salts. Thus, mutual salting-in in ternary hydrothermal solutions of Na-K-SO4 reflects the opposing, but complementary, natures of Na-SO4 versus K-SO4 interactions. The results also provide clues towards the reported liquid immiscibility in this ternary system.
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Affiliation(s)
- Joachim Reimer
- Laboratory for Bioenergy and Catalysis, Paul Scherrer Institut, 5232, Villigen PSI, Switzerland
| | - Frédéric Vogel
- Institut für Biomasse und Ressourceneffizienz, Fachhochschule Nordwestschweiz, 5210, Windisch, Switzerland.,Laboratory for Bioenergy and Catalysis, Paul Scherrer Institut, 5232, Villigen PSI, Switzerland
| | - Matthew Steele-MacInnis
- Department of Geosciences, The University of Arizona, Tucson, AZ, 85721, USA. .,Institut für Geochemie und Petrologie, ETH Zürich, 8092, Zürich, Switzerland.
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Reimer J, Vogel F. Influence of anions and cations on the phase behavior of ternary salt solutions studied by high pressure differential scanning calorimetry. J Supercrit Fluids 2016. [DOI: 10.1016/j.supflu.2015.10.018] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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10
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Wende T, Heine N, Yacovitch TI, Asmis KR, Neumark DM, Jiang L. Probing the microsolvation of a quaternary ion complex: gas phase vibrational spectroscopy of (NaSO4−)2(H2O)n=0–6, 8. Phys Chem Chem Phys 2016; 18:267-77. [DOI: 10.1039/c5cp05762k] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report infrared multiple photon dissociation spectra of cryogenically-cooled (NaSO4−)2(H2O)n dianions (n = 0–6, 8) in the fingerprint spectral region, which provide evidence for a remarkable stability of the quaternary ion complex upon microhydration.
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Affiliation(s)
- Torsten Wende
- Fritz-Haber-Institut der Max-Planck-Gesellschaft
- Germany
| | - Nadja Heine
- Fritz-Haber-Institut der Max-Planck-Gesellschaft
- Germany
| | | | - Knut R. Asmis
- Fritz-Haber-Institut der Max-Planck-Gesellschaft
- Germany
- Wilhelm-Ostwald-Institut für Physikalische und Theoretische Chemie
- Universität Leipzig
- D-04103 Leipzig
| | - Daniel M. Neumark
- Department of Chemistry
- University of California, Berkeley
- USA
- Chemical Sciences Division
- Lawrence Berkeley National Laboratory
| | - Ling Jiang
- Fritz-Haber-Institut der Max-Planck-Gesellschaft
- Germany
- State Key Laboratory of Molecular Reaction Dynamics
- Collaborative Innovation Center of Chemistry for Energy and Materials
- Dalian Institute of Chemical Physics
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Steele-MacInnis M, Reimer J, Bachmann S. Hydrothermal properties of the COS/D2 water model: a polarizable charge-on-spring water model, at elevated temperatures and pressures. RSC Adv 2015. [DOI: 10.1039/c5ra13495a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
Molecular simulations have been conducted to assess the pVT properties and static permittivity of the charge-on-spring polarizable water model COS/D2 at hydrothermal conditions from 300 to 450 °C and bulk densities of 0.001 to 1.0 g cm−3.
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Affiliation(s)
- Matthew Steele-MacInnis
- Department of Geosciences
- The University of Arizona
- Tucson
- USA
- Institute for Geochemistry and Petrology
| | - Joachim Reimer
- Laboratory for Bioenergy and Catalysis
- Paul Scherrer Institute
- 5232 Villigen PSI
- Switzerland
| | - Stephan Bachmann
- Laboratory of Physical Chemistry
- ETH Zürich
- CH-8093 Zürich
- Switzerland
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