Thermodynamic Assessment of the Suitability of the Limiting Selectivity to Screen Ionic Liquid Entrainers for Homogeneous Extractive Distillation Processes release_6ucz7llugfc4pbq44pwgmztgoi

by Andrew Paluch, Pratik Dhakal

Published in ChemEngineering by MDPI AG.

2018   p54


As a result of their high tuneability and low volatility, room temperature ionic liquids have been proposed as replacement solvents in a wide range of industrial applications. They are particularly well-suited for use as an entrainer (or solvent) in extractive distillation processes to separate close boiling and azeotropic mixtures. The limiting selectivity is a common, fundamental parameter used to screen and rank entrainer candidates. In the present study, we present a detailed thermodynamic analysis to understand the basis for its use along with the necessary, underlying assumptions. We find that, while for many cases the limiting selectivity can correctly rank ionic liquid entrainer candidates for homogeneous extractive distillation processes, it is not always able to capture the correct phase behavior. We, instead, recommend the use of composition dependent activity coefficients.
In application/xml+jats format

Archived Files and Locations

application/pdf  396.4 kB
file_xjcj6us6svbwpfm2wybjzeqisy (webarchive) (web)
Read Archived PDF
Type  article-journal
Stage   published
Date   2018-11-09
Language   en ?
Container Metadata
Open Access Publication
In Keepers Registery
ISSN-L:  2305-7084
Work Entity
access all versions, variants, and formats of this works (eg, pre-prints)
Catalog Record
Revision: ecdd8944-971e-43cb-ad2d-ab14f07aab72