Most of the compounds have physiologically active properties, and their biological properties are often attributed to the heteroatoms contained in their molecules, and most of these heteroatoms also appear in cyclic structures. A Journal, Separation and Purification Technology called Solvent extraction of lithium ions using benzoyltrifluoroacetone in new solvents, Author is Masmoudi, Abderrazak; Zante, Guillaume; Trebouet, Dominique; Barillon, Remi; Boltoeva, Maria, which mentions a compound: 78-50-2, SMILESS is CCCCCCCCP(CCCCCCCC)(CCCCCCCC)=O, Molecular C24H51OP, Product Details of 78-50-2.
This work studies the solvent extraction of lithium ions from alk. aqueous solutions by chelating agent 3-benzoyl-1,1,1-trifluoroacetone (HBTA). To develop a more eco-friendly extraction system for lithium than currently used, various hydrophobic room-temperature ionic liquids were investigated as diluents. The influence of several exptl. parameters on lithium extraction was examined, including aqueous phase pH, the nature of lithium counter-ion, extractant concentration, the addition of elec. neutral co-extractant. It was found that contrary to the traditional extraction systems with mol. diluents, HBTA alone dissolved in 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ionic liquid extracts efficiently lithium ions from the aqueous solution The addition of co-extractant, tri(n-octyl)phosphine oxide (TOPO) to HBTA did not result in a synergetic effect. To confirm the mechanism of lithium extraction by HBTA dissolved in ionic liquid (IL), the measurements of IL constituent ions and deprotonated HBTA concentrations in the equilibrium aqueous phase were carried out. Anal. of the results suggests that an elec. neutral lithium-HBTA extractant complex is extracted into the IL phase. The system combining HBTA extractant and 1-hexyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ionic liquid has high selectivity for lithium over sodium but poor selectivity over calcium. We have shown also that a high stripping ratio can be obtained using relatively concentrated aqueous solutions of hydrochloric acid. Finally, it was found that the use of some deep eutectic solvents as diluents is much less efficient compared with ILs.
In addition to the literature in the link below, there is a lot of literature about this compound(Tri-n-octylphosphine Oxide)Product Details of 78-50-2, illustrating the importance and wide applicability of this compound(78-50-2).
Reference:
Chapter 1 An introduction to palladium catalysis,
Palladium/carbon catalyst regeneration and mechanical application method