Skip to Main content Skip to Navigation
Theses

Etude thermodynamique des liquides ioniques : applications à la protection de l'environnement

Abstract : Nowadays, replacement of conventional organic solvents by a new generation of solvents less toxic, less flammable and less polluting is a major challenge for the chemical industry. Ionic liquids have been widely promoted as interesting substitutes for traditional solvents. The aim of this work is to study the behavior of ionic liquids with organic compounds or gases in order to determine their range of applications in process engineering.First, interactions between organic compounds and ionic liquids are studied using inverse gas chromatography. The activity coefficients at infinite dilution are used to calculate capacity and selectivity of different ionic liquids for different separation problems. A solvation model <> is proposed in order to estimate the gas-to-ionic liquid partition coefficients in alkyl or functionalized ionic liquids. Then, liquid-liquid equilibria measurements of ternary systems were carried out in order to evaluate the efficiency of three ionic liquids for three separation problems frequently encountered in chemical industry (extraction of aromatic compounds, thiophene or linear alcohols). The high values of distribution coefficients and selectivities indicate that the investigated ionic liquids could replace the traditional solvents. Finally, the performance of ionic liquids for greenhouse gases capture was examinated through solubility measurements of carbon dioxide and nitrous oxide in ionic liquids at high pressure. The experimental data is used in order to extend the model PPR78 (Predictive 1978, Peng-Robinson equation of state) to systems containing {CO2+ ionic liquid}
Document type :
Theses
Complete list of metadata

Cited literature [296 references]  Display  Hide  Download

https://hal.univ-lorraine.fr/tel-01748801
Contributor : Thèses Ul <>
Submitted on : Thursday, March 29, 2018 - 11:49:36 AM
Last modification on : Monday, March 29, 2021 - 4:06:46 PM
Long-term archiving on: : Friday, September 14, 2018 - 7:06:54 AM

File

2010_REVELLI_A_L.pdf
Files produced by the author(s)

Identifiers

  • HAL Id : tel-01748801, version 1

Collections

Citation

Anne-Laure Revelli. Etude thermodynamique des liquides ioniques : applications à la protection de l'environnement. Autre. Institut National Polytechnique de Lorraine, 2010. Français. ⟨NNT : 2010INPL039N⟩. ⟨tel-01748801⟩

Share

Metrics

Record views

170

Files downloads

557