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Synergistic utilization of mixed ionic liquids and supercritical fluid chromatography in CO2 fixation

Research Project

Project/Area Number 22K14526
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 27010:Transport phenomena and unit operations-related
Research InstitutionTohoku University

Principal Investigator

Hiraga Yuya  東北大学, 工学研究科, 助教 (70757814)

Project Period (FY) 2022-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2023: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2022: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Keywordsイオン液体 / 二酸化炭素固定 / カーボネート / 超臨界流体クロマトグラフィー / カーボンニュートラル
Outline of Research at the Start

超臨界流体クロマトグラフィーは,固定相と呼ばれるカラムに,移動相と呼ばれる流体を流すクロマトグラフィーの一種であり,特に移動相に超臨界流体を使用するのが特徴である.本研究では,元来分析装置としてしか利用されていない本実験手法に着目し,これを,二酸化炭素固定の連続反応分離場として利用する.具体的には,環境調和型溶媒と称されるイオン液体を固定相に使用し,ここに反応の触媒作用を期待するとともに,温度・圧力・イオン液体種などを操作する.これにより,二酸化炭素固定化を対象とした流通式連続反応分離場として超臨界流体クロマトグラフィーの可能性を拡張するものである.

Outline of Final Research Achievements

This study aims to develop a new process to synthesize cyclic carbonates from CO2 and epoxides by applying a supercritical fluid chromatography system, which is originally an analytical system. Styrene carbonate was synthesized by introducing styrene oxide as the starting material. It passed a stationary phase column containing an ionic liquid and a catalyst using supercritical CO2 as the mobile phase. The synthesis was successfully achieved within approximately one hour. The temperature, pressure, and thickness of the stationary phase ionic liquid dependence for the conversion rate were confirmed.

Academic Significance and Societal Importance of the Research Achievements

本研究は、CCS(Carbon Capture and Utilization)技術の1つである二酸化炭素固定において、超臨界流体クロマトグラフィーという既存の分析機器・技術を応用することで、より簡便にそのスクリーニング(最適条件探索)を行おうとする試みである。既存設備の応用であるためシステムは単純であり、流通装置であるために反応・分離は迅速に行えるというメリットがある。これをさらに発展的に利用することで、大規模生産にも繋げられると考えられる。

Report

(3 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • Research Products

    (7 results)

All 2023

All Presentation (7 results) (of which Int'l Joint Research: 5 results,  Invited: 1 results)

  • [Presentation] Raman spectroscopy for quantitative evaluation of CO2 physical absorption in imidazolium-based ionic liquids2023

    • Author(s)
      Yuta Takikawa, Yuya Hiraga, Toshiyuki Nonaka, Masaru Watanabe
    • Organizer
      International Symposium for the 80th Anniversary of the Tohoku Branch of the Chemical Society of Japan 化学系学協会東北大会/Joint Meeting of the Tohoku Area Chemistry Societies
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Temperature and pressure dependence of high-pressure CO2 on viscosity of 1-hexyl-3-methylimidazolium chloride2023

    • Author(s)
      Ryohei Otani, Yuya Hiraga, Toshiyuki Nonaka, Masaru Watanabe
    • Organizer
      International Symposium for the 80th Anniversary of the Tohoku Branch of the Chemical Society of Japan 化学系学協会東北大会/Joint Meeting of the Tohoku Area Chemistry Societies
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Chromatographic approach for cyclic carbonate synthesis between an epoxide and supercritical CO22023

    • Author(s)
      Yu Higashimura, Yuya Hiraga, Masaru Watanabe
    • Organizer
      International Symposium for the 80th Anniversary of the Tohoku Branch of the Chemical Society of Japan 化学系学協会東北大会/Joint Meeting of the Tohoku Area Chemistry Societies
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] ラマン分光法によるイミダゾリウム系イオン液体への CO2溶解挙動の定量的評価の検討2023

    • Author(s)
      瀧川裕太,平賀佑也,野中利之,渡邉賢
    • Organizer
      第54回 化学工学会秋季大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] PC-SAFT型状態方程式を用いた混合イオン液体―CO2系相平衡推算に関する検討/A Study on Prediction for Phase Equilibria of Mixed Ionic Liquid―CO2 System Using PC-SAFT Type Equation of State2023

    • Author(s)
      平賀佑也
    • Organizer
      第54回 化学工学会秋季大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Design for Green Chemistry from the perspective of Measurement and Modeling of Fundamental Physical Properties2023

    • Author(s)
      Yuya Hiraga
    • Organizer
      The 12th International Conference on Separation Science and Technology (ICSST 23)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Infinite Dilution Partition Coefficients of Benzene Derivatives in [emim][Tf2N] ― CO2 Measured by Supercritical Fluid Chromatography2023

    • Author(s)
      Y. Hiraga, M. Watanabe
    • Organizer
      5th International Conference on Ionic Liquids in Separation and Purification Technology (ILSEPT 5)
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research

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Published: 2022-04-19   Modified: 2025-01-30  

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