P21 均一液液抽出で形成されるイオン液体における超音波の影響(Poster Session)

概要

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The effect of ultrasound on the ionic liquid was investigated by using the Homogeneous Liquid-liquid Extraction (HoLLE) based on the ion-pair phase separation phenomenon. This separation phenomenon occurred by an ion-pair formation of perfluorooctanoic acid (PFOA) and tetrabutylammonium ion (TBA). In the presentation, ionic liquid (the PFOA-TBA phase) consisted of an ion-pair of PFOA and TBA was used in order to investigate the effect of ultrasound on ionic liquid. The IR absorption spectrum of the PFOA-TBA phase was measured. In the spectrum, the value of the percent transmittance (T, %) for the he PFOA-TBA phase was decreased by ultrasound irradiation (45 kHz and 5 min). And the T significantly changed in the three kinds of wavenumber (2000 cm^<-1>, 3000 cm^<-1> and 5000 cm^<-1>). Moreover, in the HoLLE with PFOA and TBA, the percentage extraction (E, %) of the Fe^<2+>-phenanthroline complex (Fe(phen)_3^<2+>) was measured in order to investigate the effect of ultrasound irradiation on the PFOA-TBA phase. When the ultrasound was not irradiated to the PFOA-TBA phase, the E for Fe(phen)_3^<2+> was 45 %. But the E of Fe(phen)_3^<2+> was 23 % by ultrasound irradiation (45 kHz and 10 min). In the results, the value of E was decreased by ultrasound irradiation. In this study, new effect of ultrasound on ionic liquid formed by HoLLE was obtained.
日本ソノケミストリー学会の論文
2012-11-09