Autor(es)

Simoes Lucas, Davi ; Bernardes Noronha, Pedro ; Vieira Freire, Nian ; Gallo-Garcia, Luis Alberto ; Biaggio, Francisco Carlos ; Arce, Pedro F. ; Helena Pelegrine Guimaraes, Daniela

• Tipo de documento: Artigo Científico
• Fonte: SEPARATION SCIENCE AND TECHNOLOGY; v. 60, n. 13, p. 15-pg., 2025-07-07.

Resumo

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)

• Processo FAPESP: 20/15809-3 - Análise da viabilidade da utilização do líquido iônico cloreto de 1-etil-3-metil imidazólio como catalisador na reação de transesterificação de misturas binárias
• Beneficiário: Igor Nunes Ferreira
• Modalidade de apoio: Bolsas no Brasil - Iniciação Científica
• Processo FAPESP: 21/05359-3 - Medição, Teste de qualidade e Modelagem termodinâmica do Equilíbrio Líquido-Liquido do sistema: Acetato de n-butila + 1-Butanol + Cloreto de 1-Etil-3-Metil Imidazôlio
• Beneficiário: Caio Henrique Marciano
• Modalidade de apoio: Bolsas no Brasil - Iniciação Científica
• Processo FAPESP: 22/11043-1 - Síntese do hidróxido de 1-butil-3-metilimidazólio ([Bmim][OH]) e utilização como catalisador na reação de transesterificação de oleaginosas
• Beneficiário: Vinícius Chibante Geronimo
• Modalidade de apoio: Bolsas no Brasil - Iniciação Científica
• Processo FAPESP: 18/03739-0 - Medição experimental, correlação e predição do comportamento de fases de fluidos de sistemas contendo líquidos iônicos (imidazôlio) e co2 supercrítico.
• Beneficiário: Pedro Felipe Arce Castillo
• Modalidade de apoio: Auxílio à Pesquisa - Regular