Berthon, Laurence published the artcileHow Phase Modifiers Disrupt Third-phase Formation in Solvent Extraction Solutions, Recommanded Product: n-Octanol, the main research area is solvent extraction neodymium mol dynamics.
The structure of complex organic solutions based on N,N,N,N-tetraoctyldiglycolamide (TODGA) used in actinide separation processes were characterized after water and neodymium extraction The organic phases were characterized using FTIR spectroscopy, ESI-MS spectrometry, Small and Wide Angle X-ray Scattering (SWAXS) and mol. dynamic simulations. The role of the “”phase modifier”” like 1-octanol (used in the innovative SANEX process) or the “”co-extractant”” like DMDOHEMA (used, for example, in the EURO-GANEX process) added to the organic phase to avoid third-phase formation was investigated at mol. and supramol. scales. Without metallic cations in 0.2 mol/L TODGA solution in n-heptane, TODGA mols. are organized in monomers and small aggregates containing mainly two or three TODGA mols. After Nd(NO3)3 extraction, complexes or aggregates are formed in which each neodymium cation is surrounded in average by 2 to 4 TODGA, 3 nitrate ions and 1 to 2 water mols. Polymetallic species (aggregates) may also be formed. Adding 5%Vol 1-octanol or 0.5 mol/L DMDOHEMA to 0.2 mol/L TODGA solution in n-heptane leads to the formation of mixed aggregates containing TODGA and octanol mols. or TODGA and DMDOHEMA mols. These mols. both interact directly with the extracted metallic cation in the organic phase, modifying the structure of the neodymium species, and improving their solubility in this organic phase. At least one TODGA mol. remains in the cation first coordination sphere in both cases and preserves its significant role in the complexation/selectivity of the cations. But it is clear that both 1-octanol and DMDOHEMA have a role in the speciation of the cations in the organic phase: 1-octanol replaces water mols. in the first coordination sphere of Nd, acting as a co-surfactant; DMDOHEMA drives the organization and DMDOHEMA mols. partially replace TODGA in the first coordination sphere of Nd.
Solvent Extraction and Ion Exchange published new progress about Lattice dynamics. 111-87-5 belongs to class alcohols-buliding-blocks, name is n-Octanol, and the molecular formula is C8H18O, Recommanded Product: n-Octanol.
Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts