abstract
A systematic isobaric vapor-liquid equilibrium (VLE) study of seven binary mixtures of 1-butyl-3-methylimidazolium chloride, [C(4)C(1)im][CI], and methanol, propan-1-ol, propan-2-ol, butan-1-ol, butan2-ol, tert-butanol (2-methylpropan-2-ol), iso-butanol (2-methylpropan-1-ol) and pentan-1-01, was carried out at three different system pressures (0.1, 0.07 and 0.05 MPa). Activity coefficients were estimated from the boiling temperatures of the binary mixtures. soft-SAFT equation of state was used to describe the experimental VLE data and all together, allowed to infer and understand the effect of the alcohol alkyl chain length and structural isomerism on the molecular interactions between the IL and the alcohols. (C) 2017 Elsevier B.V. All rights reserved.
keywords
DIRECTIONAL ATTRACTIVE FORCES; TERNARY-SYSTEM ETHANOL; IMIDAZOLIUM IONIC LIQUIDS; SOFT-SAFT EQUATION; 2-DIMENSIONAL CORRELATION; EXTRACTIVE DISTILLATION; SOLUBILITY BEHAVIOR; PHASE BEHAVIOR; BINARY-SYSTEMS; COSMO-RS
subject category
Thermodynamics; Chemistry; Engineering
authors
Chouireb, N; Khan, I; Crespo, EA; Oliveira, MB; Llovell, F; Vega, LF; Tafat-Igoudjilene, O; Kaci, AA; Santos, LMNBF; Carvalho, PJ; Coutinho, JAP
our authors
Emanuel de Almeida Crespo
PhD Student
Mariana Belo Oliveira
Post-doc Fellowship
Pedro J. Carvalho
Assistant ProfessorProjects
CICECO - Aveiro Institute of Materials (UID/CTM/50011/2013)
Projeto de Investigação Exploratória: Pedro Carvalho (IF/00758/2015)
acknowledgements
This work was developed in the scope of the project CICECO - Aveiro Institute of Materials, POCI-01-0145-FEDER-007679 (Ref. FCT UID/CTM/50011/2013) and CIQUP-University of Porto (Projects: PEst-C/QUI/U10081/2013, FCUP-CIQ-UP-NORTE-07-0124-FEDER-000065), financed by national funds through the FCT/MEC and co-financed by FEDER under the PT2020 Partnership Agreement. On the Spanish side, financial support was provided by AGAUR, from the Catalan Government (2014SGR-1582). The authors acknowledge FCT for the exploratory project grant (EXPL/QEQ-PRS/0224/2013). I. Khan and M.B. Oliveira acknowledge FCT for the postdoctoral grants SFRH/BPD/76850/2011 and SFRH/BPD/71200/2010, respectively. P.J. Carvalho acknowledges FCT for a contract under the Investigador FCT 2015, contract number IF/00758/2015.