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Changes in the Thermodynamic Properties of the Ionic Liquid 1-Butyl-3-methylimidazolium Bis(trifluoromethanesulfonyl)amide Upon Addition of Primary Alcohols

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Abstract

In this work, the thermodynamic properties of 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)amide/primary alcohol (methanol to 1-nonanol) mixtures were studied. The densities, viscosities, and electrical conductivities of the mixtures were determined for a range of compositions up to the solubility limit of the alcohol in the ionic liquid at room temperature. From these data, excess molar volumes and viscosity deviations were calculated. The changes in the structure of the ionic liquid upon addition of the primary alcohols are discussed. We also considered the relationship between the macroscopic properties observed in the present study and the Raman spectral changes reported in our previous study. We explained the behavior of the systems at the molecular level, especially at lower alcohol concentrations, by a concept where the alcohols occupy spaces formed inside the nanoheterogeneous structure of the ionic liquid.

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Acknowledgements

The authors would like to thank Enago, the editing brand of Crimson Interactive Pvt. Ltd. for the English language review.

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Authors and Affiliations

  1. Department of Applied Chemistry, National Defense Academy, 1-10-20, Hashirimizu, Yokosuka, Kanagawa, 239-8686, Japan

    Yukihiro Yoshimura, Shuji Hattori, Tomoyoshi Mori & Takahiro Takekiyo

  2. Graduate School of Science and Engineering, Soka University, 1-236, Tangi, Hachioji, Tokyo, 192-8577, Japan

    Kyohei Kitawaki & Akio Shimizu

  3. Faculty of Science and Engineering, Soka University, 1-236, Tangi, Hachioji, Tokyo, 192-8577, Japan

    Kazuyoshi Kaneko

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  1. Yukihiro Yoshimura
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  2. Shuji Hattori
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  3. Kyohei Kitawaki
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  4. Tomoyoshi Mori
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  5. Kazuyoshi Kaneko
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  6. Takahiro Takekiyo
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YY: conceptualization, supervision, writing-original draft preparation; SH: investigation; KK: investigation; TM: investigation; KK: investigation; TT: formal analysis, visualization; AS: writing- reviewing and editing.

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Correspondence to Yukihiro Yoshimura.

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Yoshimura, Y., Hattori, S., Kitawaki, K. et al. Changes in the Thermodynamic Properties of the Ionic Liquid 1-Butyl-3-methylimidazolium Bis(trifluoromethanesulfonyl)amide Upon Addition of Primary Alcohols. J Solution Chem 50, 995–1007 (2021). https://doi.org/10.1007/s10953-021-01098-z

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