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The features of structurization of the dilute aqueous solution of lithium chloride at the near-critical and supercritical conditions

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Abstract

Method of integral equations in the RISM approximation was used for the study of the structural properties of the dilute aqueous solution of lithium chloride in the near-critical and supercritical state. The following general trends of structural changes in the solution at its transition from the standard conditions to the supercritical conditions were revealed: destruction of the solvent tetrahedral lattice, thermal dehydration of the cation and anion, and an increase in the contact association. We found that the effect of temperature on the decrease in the fraction of the hydrogen-bonded solvent molecules and the value of the thermal dehydration of the ions is comparable with the influence of the density on the same characteristics. The process of ion association is affected predominantly by temperature, the effect is maximal in the subcritical region.

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Authors and Affiliations

  1. Institute of Solution Chemistry, Russian Academy of Sciences, ul. Akademicheskaya 1, Ivanovo, 153045, Russia

    M. V. Fedotova

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  1. M. V. Fedotova
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Correspondence to M. V. Fedotova.

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Original Russian Text © M.V. Fedotova, 2011, published in Zhurnal Obshchei Khimii, 2011, Vol. 81, No. 7, pp. 1067–1073.

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Fedotova, M.V. The features of structurization of the dilute aqueous solution of lithium chloride at the near-critical and supercritical conditions. Russ J Gen Chem 81, 1417–1423 (2011). https://doi.org/10.1134/S1070363211070036

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  • DOI: https://doi.org/10.1134/S1070363211070036

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