Association of tris(pentane-2,4-dionato)chromium(III) with modifiers of hydrogen-bond donor in supercritical carbon dioxide

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  • OHASHI Akira
    Department of Environmental Sciences, Faculty of Science, Ibaraki University
  • HOSHINO Hirobumi
    Department of Environmental Sciences, Faculty of Science, Ibaraki University
  • IMURA Hisanori
    Department of Environmental Sciences, Faculty of Science, Ibaraki University
  • OHASHI Kousaburo
    Department of Environmental Sciences, Faculty of Science, Ibaraki University

書誌事項

タイトル別名
  • Association of Tris(pentane-2,4-dionato)chromium(III) with Modifiers of Hydrogen-bond Donors in Supercritical Carbon Dioxide
  • Association of Tris pentane 2 4 dionato chromium 3 with Modifiers of Hydrogen bond Donors in Supercritical Carbon Dioxide

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説明

The solubility of tris(pentane-2,4-dionato)chromium(III) (Cr(acac)3) in supercritical carbon dioxide (SC-CO2) containing organic modifiers (1,1,1,3,3,3-hexafluoro-2-propanol (HFP) and 3,5-bis(trifluoromethyl)phenol (BTMP)) of hydrogen-bond donors was investigated by UV/VIS spectrophotometry. A great solubility enhancement of Cr(acac)3 in SC-CO2 was accomplished by adding HFP and BTMP. The association constant of Cr(acac)3 with HFP and BTMP in SC-CO2 could be determined from the relationship of the solubility enhancement against the concentration of the modifier. The association constant linearly increases with an increase in the acid dissociation constant of the modifiers.

収録刊行物

  • Analytical Sciences

    Analytical Sciences 22 (11), 1399-1401, 2006

    社団法人 日本分析化学会

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