Association of Tris(pentane-2,4-dionato)chromium(III) with Modifiers of Hydrogen-bond Donors in Supercritical Carbon Dioxide

被引：0

作者：

Akira Ohashi

Hirobumi Hoshino

Hisanori Imura

Kousaburo Ohashi

机构：

[1] Ibaraki University,Department of Environmental Sciences, Faculty of Science

来源：

Analytical Sciences | 2006年 / 22卷

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摘要：

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.

引用

页码：1399 / 1401

页数：2

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