Absorption- and Pressure-induced Structural Transition Exhibiting V-shaped Density Change in Imidazolium-based Ionic Liquid + CO<sub>2</sub> System

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Author(s)

    • Okumura Shuhei
    • Division of Nanoscience, Graduate School of Advanced Integration Science, Chiba University
    • Ushio Masayoshi
    • Division of Nanoscience, Graduate School of Advanced Integration Science, Chiba University
    • Oishi Akina
    • Division of Nanoscience, Graduate School of Advanced Integration Science, Chiba University
    • Nishikawa Keiko
    • Division of Nanoscience, Graduate School of Advanced Integration Science, Chiba University
    • Morita Takeshi
    • Division of Nanoscience, Graduate School of Advanced Integration Science, Chiba University

Abstract

The density of ionic liquid (IL) + CO<sub>2</sub> systems was measured by X-ray absorption method and excess molar volume was evaluated to investigate the volumetric behavior under a CO<sub>2</sub> absorption process up to 20 MPa. A V-shaped density plot was observed, and three types of expanded/compressed trends were classified based on the excess molar volume of the IL. The volumetric behavior of the IL strongly depends on the CO<sub>2</sub> amount absorbed in the IL’s cavities.

Journal

  • Chemistry Letters

    Chemistry Letters 44(7), 937-939, 2015

    The Chemical Society of Japan

Codes

  • NII Article ID (NAID)
    130005085155
  • Text Lang
    ENG
  • ISSN
    0366-7022
  • Data Source
    J-STAGE 
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