New Hydrophobic Deep Eutectic Solvent Based on Di-(2-Ethylhexyl)Phosphoric Acid and Trioctylphosphine Oxide: Properties and Application

Engineering Proceedings

article

Arina V. Kozhevnikova¹  Inna V. Zinov’eva¹  Nikita A. Milevskii¹  Yulia A. Zakhodyaeva¹  Andrey A. Voshkin¹ 

[1] Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences

关键词: deep eutectic solvent;    di-(2-ethylhexyl)phosphoric acid;    trioctylphosphine oxide;    metal extraction;    liquid–liquid extraction;   

DOI  :  10.3390/ECP2023-14656

来源: mdpi

【 摘 要 】

In this work, a new hydrophobic deep eutectic solvent (HDES) based on trioctylphosphine oxide and di-(2-ethylhexyl)phosphoric acid was obtained. The formation of HDES was confirmed by NMR and FT-IR spectroscopy. The physical properties of the synthesized HDES were studied, density, dynamic viscosity, refractive index in the range of 15–60 °C, and phase diagram. The possibility of extraction of Co(II) and Al(III) ions from nitrate aqueous solutions was studied. The regularities of the interfacial distribution of metal ions were studied depending on the time of the extraction process, the ratio of components in HDES and pH of the aqueous phase. It has been shown that this HDES can be used for the selective extraction of metal ions.

【 授权许可】

Unknown