A green extraction process for the selective recovery of Sc(iii) based on hydrophobic betaine derivative ionic liquids.

ABSTRACT: The efficient extraction recovery of scandium (Sc(iii)) is crucial for its application in high-end technology. Two novel hydrophobic carboxylic acid ionic liquids (ILs), namely, [lauryl betaine][bis(trifluoromethanesulphonyl)imide] ([Laur][Tf₂N]) and [cocamidopropyl betaine][bis(trifluoromethanesulphonyl)imide] ([Coca][Tf₂N]), were synthesized using two inexpensive amphoteric surfactants as cation sources. [Laur][Tf₂N] (257 °C) and [Coca][Tf₂N] (251 °C) exhibited good thermal stability and strong hydrophobicity. The viscosity of [Coca][Tf₂N] (4.29 × 10³ mP s) was higher than that of [Laur][Tf₂N] (2.55 × 10³ mPa s) at 25 °C. The optimal extraction conditions were an extraction equilibrium time of 40 min,

SUBMITTER: Su X 

PROVIDER: S-EPMC10844928 | biostudies-literature | 2024 Jan

REPOSITORIES: biostudies-literature