| Full text | |
| Author(s): |
Simoes Lucas, Davi
;
Bernardes Noronha, Pedro
;
Vieira Freire, Nian
;
Gallo-Garcia, Luis Alberto
;
Biaggio, Francisco Carlos
;
Arce, Pedro F.
;
Helena Pelegrine Guimaraes, Daniela
Total Authors: 7
|
| Document type: | Journal article |
| Source: | SEPARATION SCIENCE AND TECHNOLOGY; v. 60, n. 13, p. 15-pg., 2025-07-07. |
| Abstract | |
Ionic liquids (ILs) have attracted interest in liquid-liquid extraction due to their high polarity, offering a sustainable and safer alternative to traditional organic solvents in separation processes. Imidazolium-based ILs are notable for their high thermal stability, low volatility, and broad solubility, which enable effective separations under various conditions. Their ability to form biphasic systems, thanks to their affinity for both organic and inorganic substances, makes them especially suitable for industrial applications. This study focused on examining the liquid-liquid equilibrium of ternary mixtures made up of n-butyl acetate, n-butanol, and synthesized 1-butyl-3-methylimidazolium chloride ([BMIM][Cl]). After synthesizing and characterizing the [BMIM][Cl] using magnetic resonance and infrared methods, the compound's molecular structure and functional groups were determined. Its physicochemical properties were examined. Liquid-liquid equilibrium (LLE) experiments were carried out to determine the best conditions for [BMIM][Cl] to act as an extracting agent, with butanol as the solute and butyl acetate as the diluent, at 298.15 and 308.15 K, and 101.3 kPa. The sigma profile and sigma potential were obtained using the COSMO-RS model, and the tangency of the tie-lines with the Gibbs energy surface was evaluated. The present research contributed to the application of green solvents in liquid-liquid extraction through azeotropic separation. (AU) | |
| FAPESP's process: | 20/15809-3 - Feasibility analysis in using the ionic liquid 1-ethyl-3-methyl imidazolium chloride as a catalyst in the transesterification reaction of binary mixtures |
| Grantee: | Igor Nunes Ferreira |
| Support Opportunities: | Scholarships in Brazil - Scientific Initiation |
| FAPESP's process: | 21/05359-3 - Measurement, Quality test and Thermodynamic modeling of the Liquid-Liquid Equilibrium of the system: n-Butyl acetate + 1-Butanol + 1-Ethyl-3-Methyl Imidazolium chloride |
| Grantee: | Caio Henrique Marciano |
| Support Opportunities: | Scholarships in Brazil - Scientific Initiation |
| FAPESP's process: | 22/11043-1 - Synthesis of 1-butyl-3-methylimidazolium hydroxide ([Bmim][OH]) and use as a catalyst in the transesterification reaction of oilseeds |
| Grantee: | Vinícius Chibante Geronimo |
| Support Opportunities: | Scholarships in Brazil - Scientific Initiation |
| FAPESP's process: | 18/03739-0 - EXPERIMENTAL MEASUREMENT, CORRELATION AND PREDICTION OF THE FLUID PHASE BEHAVIOR OF SYSTEMS CONTAINING IONIC LIQUIDS (IMIDAZOLIUM) AND SUPERCRITICAL CO2. |
| Grantee: | Pedro Felipe Arce Castillo |
| Support Opportunities: | Regular Research Grants |