Solvent Polarities of Supercritical CO2/Methanol Mixtures.

DOI Web Site 参考文献17件
  • Bulgarevich Dmitry S.
    Department of Chemical Systems, National Institute of Materials and Chemical Research
  • Sako Takeshi
    Department of Chemical Systems, National Institute of Materials and Chemical Research
  • Sugeta Tsutomu
    Department of Chemical Systems, National Institute of Materials and Chemical Research
  • Otake Katsuto
    Department of Chemical Systems, National Institute of Materials and Chemical Research
  • Sato Masahito
    Department of Chemical Systems, National Institute of Materials and Chemical Research
  • Uesugi Masayuki
    Department of Industrial Chemistry , Faculty of Engineering, Nihon University
  • Kato Masahiro
    Department of Industrial Chemistry , Faculty of Engineering, Nihon University

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タイトル別名
  • Solvent Polarities of Supercritical CO2

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UV/VIS absorption spectroscopy was used to estimate the microscopic solvent polarities of supercritical carbon dioxide alone and its mixtures with methanol. It was found that the local composition of methanol in the cybotactic region of 4-nitroanisole was larger than the corresponding bulk concentration. With increasing pressure the methanol molecules were pressed out of the solvation shell of probe molecule by the carbon dioxide molecules. From the solubility measurements the solvation numbers of the carbon dioxide molecules around 4-nitroanisole were calculated as a function of fluid density.

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